Form 10-K
Table of Contents
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM
10-K
For the fiscal year ended December 31, 2020
For the transition period from
to
Commission File
No. 001-31791
GALECTIN THERAPEUTICS INC.
4960 Peachtree Industrial Blvd., Suite 240, Norcross, GA 30071
(Address of Principal Executive Offices) (Zip Code)
(678)
620-3186
(Registrant’s Telephone Number, Including Area Code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each class TradingSymbol Name of each exchangeon which registered
Common Stock, $0.001 Par Value Per Share GALT The NASDAQ Stock Market
Securities registered pursuant to Section 12(g) of the Act:
None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐ No ☒
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☒
Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐
Indicate by check mark whether the registrant has submitted electronically, every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation
S-T
(§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation
S-K
is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form
10-K
or any amendment to this Form
10-K. ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated
filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule
12b-2
of the Exchange Act.
Large accelerated filer ☐ Accelerated filer ☐
Non-accelerated filer ☒ Smaller reporting company ☒
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. Yes ☐ No ☒
Indicate by check mark whether the registrant is a shell company (as defined in Rule
12b-2
of the Exchange Act). Yes ☐ No ☒
The aggregate market value of the voting and
non-voting
common equity held by
non-affiliates
computed by reference to the price at which the common equity was sold, or the average bid and asked price of such common equity, as of June 30, 2020 was $126 million.
The number of shares outstanding of the registrant’s common stock as of February 28, 2021 was 57,156,030.
Table of Contents
INDEX TO FORM
10-K
FOR THE YEAR ENDED DECEMBER 31, 2020
PAGE
PART 1
ITEM 1. Business 1
ITEM 1A. Risk Factors 14
ITEM 1B. Unresolved Staff Comments 26
ITEM 2. Properties 26
ITEM 3. Legal Proceedings 26
ITEM 4. Mine Safety Disclosure 26
PART II
ITEM 6. Selected Financial Data 27
ITEM 7A. Quantitative and Qualitative Discussions About Market Risk 32
ITEM 8. Financial Statements and Supplementary Data 32
ITEM 9A. Controls and Procedures 32
ITEM 9B. Other Information 33
PART III
ITEM 10. Directors, Executive Officers and Corporate Governance 34
ITEM 11. Executive Compensation 38
ITEM 14. Principal Accountant Fees and Services 51
PART IV
ITEM 15. Exhibits and Financial Statement Schedules 53
SIGNATURES 58
Table of Contents
PART I
Item 1.
Business
Overview
We are a clinical stage biopharmaceutical company engaged in drug research and development to create new therapies for fibrotic disease, cancer and selected other diseases. Our drug candidates are based on our method of targeting galectin proteins, which are key mediators of biologic and pathologic functions. We use naturally occurring, readily-available plant products as starting material in manufacturing processes to create proprietary, patented complex carbohydrates with specific molecular weights and other pharmaceutical properties. These complex carbohydrate molecules are appropriately formulated into acceptable pharmaceutical formulations. Using these unique carbohydrate-based candidate compounds that largely bind and inhibit galectin proteins, particularly
galectin-3,
we are undertaking the focused pursuit of therapies for indications where galectin proteins have a demonstrated role in the pathogenesis of a given disease. We focus on diseases with serious, life-threatening consequences and those where current treatment options are limited specifically in NASH
(non-alcoholic
steatohepatitis) with cirrhosis and certain cancer indications. Our strategy is to establish and implement clinical development programs that add value to our business in the shortest period of time possible and to seek strategic partners when one of our programs becomes advanced and requires significant additional resources.
Our lead
galectin-3
inhibitor is belapectin
(GR-MD-02),
which has been demonstrated in preclinical models to reverse liver fibrosis and cirrhosis. Belapectin has the potential to treat many diseases due to
galectin-3’s
involvement in multiple key biological pathways such as fibrosis, immune cell function and immunity, cell differentiation, cell growth, and apoptosis (cell death). The importance of
galectin-3
in the fibrotic process is supported by experimental evidence. Animals with the gene responsible for
galectin-3
“knocked-out”
can no longer develop fibrosis in response to experimental stimuli compared to animals with an intact
galectin-3
gene. We are using our
galectin-3
inhibitor to treat advanced liver fibrosis and liver cirrhosis in NASH patients. We have completed two Phase 1 clinical studies, a Phase 2 clinical study in NASH patients with advanced fibrosis
(NASH-FX)
and a second Phase 2b clinical trial in NASH patients with well compensated cirrhosis
(NASH-CX)
meaning the liver is scarred but still able to perform most of its basic functions.
We are now engaged in a Phase 2b/3 clinical trial. Our study protocol was filed with the FDA on April 30, 2020 for a seamless adaptively-designed Phase 2b/3 clinical study, the NAVIGATE trial (formerly called
NASH-RX),
evaluating the safety and efficacy of its
galectin-3
inhibitor, belapectin
(GR-MD-02),
for the prevention of esophageal varices in patients with
non-alcoholic
steatohepatitis (NASH) cirrhosis (Further details are available at
www.clinicaltrials.gov
under study NCT04365868); this study began enrolling patients in
Q2-2020.
Recently the Company received a letter from the FDA providing comments, asking questions and providing guidance on various aspects of the ongoing NAVIGATE trial.
Additionally, a study protocol entitled “A Single-dose, Open-label, Pharmacokinetic Study of
Belapectin
(GR-MD-02)
in Subjects With Normal Hepatic Function and Subjects With Varying Degrees of Hepatic Impairment” has been filed with the FDA to examine the effects of the drug in subjects with normal hepatic function and subjects with varying degrees of hepatic impairment (study details are listed under study NCT04332432 on
www.clinicaltrials.gov
); this study is enrolling patients.
We endeavor to leverage our scientific and product development expertise as well as established relationships with outside sources to achieve cost-effective and efficient drug development. These outside sources, amongst others, provide us with expertise in preclinical models, pharmaceutical development, toxicology, clinical trial operations, pharmaceutical manufacturing, sophisticated physical and chemical characterization, and commercial development. We also have established through our majority-owned joint venture subsidiary, Galectin Sciences LLC, a discovery program aimed at the targeted development of small molecules (generally,
non-carbohydrate)
that bind galectin proteins and may afford options for alternative means of drug delivery (e.g., oral) and as a result expand the potential uses of our
galectin-3
inhibitor compounds. Three series of composition of matter patents covering discoveries at Galectin Sciences have been filed.
We are also pursuing a development pathway to clinical enhancement and commercialization for our lead compounds in immuno-oncology for cancer therapy in collaboration with Providence Portland Cancer Center. However, our clinical development efforts are primarily focused on liver fibrosis and NASH. All of our proposed products are presently in development, including
pre-clinical
and clinical trials.
We were founded in July 2000 as
Pro-Pharmaceuticals,
Inc., a Massachusetts corporation. On April 25, 2001,
DTR-Med
Pharma Corp. (“DTR”), which was incorporated in Nevada on January 26, 2001, entered into a stock exchange agreement with
Pro-Pharmaceuticals,
Inc., whereby DTR acquired all of the outstanding shares of common stock of
Pro-Pharmaceuticals,
Inc. On May 10, 2001, DTR changed its name to
“Pro-Pharmaceuticals,
Inc.” and on June 7, 2001, the Massachusetts corporation was merged into the Nevada corporation. On May 26, 2011,
Pro-Pharmaceuticals,
Inc. changed its name to “Galectin Therapeutics Inc.” In October, 2012, we moved our headquarters to a suburb of Atlanta, GA to be closer to a center of discovery collaboration while maintaining a laboratory operation in the Boston area.
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Table of Contents
Our Drug Development Programs
Galectins are a class of proteins that are made by many cells in the body, but predominantly in cells of the immune system. As a group, these proteins are able to bind to sugar molecules that are part of other proteins, glycoproteins, in and on the cells of our body. Galectin proteins act as a kind of molecular glue, bringing together molecules that have sugars on them. Galectin proteins, in particular
galectin-3,
are known to be markedly increased in a number of important diseases including inflammatory diseases, scarring of organs (e.g. liver, lung, kidney, and heart) and cancers of many kinds. The increase in galectin protein promotes the disease and is detrimental to the patient. Published data substantiating the importance of
galectin-3
in the fibrotic process arises from gene knockout experiments in animal studies. Mice genetically altered to eliminate the
galectin-3
gene, and thus unable to produce
galectin-3,
are incapable of developing liver fibrosis in response to toxic insult to the liver and in fatty liver disease as well as development of fibrosis in other tissues.
We have one new proprietary chemical entity (NCE) in development, belapectin, which has shown promise in preclinical and early clinical studies in treatment of fibrosis, severe skin disease, and in cancer therapy. Currently we are focusing on development of belapectin intended to be used in the treatment of liver fibrosis associated with fatty liver disease (NASH) and more specifically in NASH cirrhosis. We have also leveraged our relationships with well-known investigators to demonstrate clinical effects of belapectin in treating moderate to severe plaque psoriasis, severe atopic dermatitis, and in cancer therapy in combination with immune-system modifying agent(s). Belapectin is a proprietary, patented compound derived from natural, readily available, plant-based starting materials, which, following chemical processing, exhibits the properties of binding to and inhibiting
galectin-3
proteins. A second NCE,
GM-CT-01
is a proprietary, patented compound that is made from a completely different starting source plant material and also binds and inhibits galectin proteins. Previously in clinical development for cancer indications,
GM-CT-01
compound has been explored in limited other preclinical studies.
Our product pipeline is shown below:
Indication Drug Status
Fibrosis
Lung Fibrosis belapectin In pre-clinical development
Kidney Fibrosis belapectin In pre-clinical development
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Indication Drug Status
Cancer Immunotherapy
Psoriasis
Fibrosis.
Belapectin is our lead product candidate for treatment of fibrotic disease. Our preclinical data show that belapectin has a significant therapeutic effect on liver fibrosis as shown in several relevant animal models. In addition, in NASH animal models, belapectin has been shown to reduce liver fat, inflammation, and ballooning degeneration (death of liver cells). Therefore, we chose belapectin as the lead candidate in a development program targeted initially at fibrotic liver disease associated with
non-alcoholic
steatohepatitis (NASH). In January 2013, an Investigational New Drug (“IND”) was submitted to the FDA with the goal of initiating a Phase 1 study in patients with NASH and advanced liver fibrosis to evaluate the human safety of belapectin and pharmacodynamics biomarkers of disease. On March 1, 2013, the FDA indicated we could proceed with a US Phase 1 clinical trial for belapectin with a development program aimed at obtaining support for a proposed indication of belapectin for treatment of NASH with advanced fibrosis. The Phase 1 trial was completed and demonstrated that belapectin up to 8 mg/kg Lean Body Mass (LBM), i.v. was safe and well tolerated.
Additionally, an open label drug-drug interaction study was completed in healthy volunteers during the second quarter of 2015 with belapectin and it showed that with 8 mg/kg LBM dose of belapectin and 2 mg/kg LBM dose of midazolam there was no drug-drug interaction and no serious adverse events or drug-related adverse events were observed. The secondary objective was to assess the safety and tolerability of belapectin when administered concomitantly with midazolam.
Our Phase 2 program in fibrotic disease consisted of two separate human clinical trials. The primary clinical trial was the Phase 2b
NASH-CX
study for one year for patients with NASH with compensated cirrhosis, which began enrolling in June 2015. This study was the primary focus of our program and was a randomized, placebo-controlled, double-blind, parallel-group Phase 2b trial to evaluate the safety and efficacy of belapectin for treatment of liver fibrosis and resultant portal hypertension in NASH patients with compensated cirrhosis. A smaller, exploratory
NASH-FX
trial was conducted to explore potential use of various
non-invasive
imaging techniques in NASH patients with advanced fibrosis but not cirrhosis.
NASH-FX
Trial:
The
NASH-FX
trial was a Phase 2a pilot trial for patients with NASH and advanced fibrosis that explored use of three
non-invasive
imaging technologies. It was a short, single site, four-month trial in 30 NASH patients with advanced fibrosis (F3), but not cirrhosis (F4), randomized 1:1 to either
9 bi-weekly
doses of 8 mg/kg LBM of belapectin or placebo. The trial did not meet its primary biomarker endpoint as measured using multi-parametric magnetic resonance imaging (LiverMultiScan
(R)
, Perspectum Diagnostics). The trial also did not meet secondary endpoints that measure liver stiffness as a surrogate for fibrosis using, magnetic resonance-elastography and FibroScan
®
score. We, and many experts in the field, now believe that a four-month treatment period was not sufficient to show efficacy results in established advanced liver fibrosis. This small study was also not adequately powered for the secondary endpoints. In the trial, belapectin was found to be safe and well tolerated with no serious adverse events and evidence of a pharmacodynamic effect. These results provided support for further development in NASH.
NASH-CX
Trial:
The
NASH-CX
trial was a larger multi-center clinical trial that explored the use of belapectin for the treatment of liver fibrosis and resultant portal hypertension in patients with well-compensated NASH cirrhosis. Enrollment in this trial was completed in September 2016, and a total of 162 patients at 36 sites in the United States were randomized to receive either 2 mg/kg LBM of belapectin, 8 mg/kg LBM of belapectin or placebo, with 54 patients in each group. Approximately 50% of patients at baseline had esophageal varices (a complication of portal hypertension). The primary endpoint was a reduction in hepatic venous pressure gradient (HVPG). Patients received an infusion of belapectin or placebo every other week for one year, a total of 26 infusions, and were evaluated to determine the change in HVPG as compared with placebo. Secondary or exploratory endpoints included fibrosis on liver biopsy, measurement of liver stiffness (FibroScan
(R)
) and assessment of liver metabolism (
13
C-methacetin
breath test, Exalenz). Top line data readout was reported in December 2017. The study demonstrated a favorable safety profile and clinically meaningful efficacy results in patients without esophageal varices at baseline demonstrated by a prevention of development of varices when compared to placebo.
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In the total patient population, the primary endpoint HVPG showed a trend toward benefit with belapectin treatment, but the difference from placebo was not statistically significant. The mean change in HVPG of placebo from baseline to week 54 was 0.3 mm Hg. The mean change in HVPG from baseline was
-0.37
and
-0.42
for the 2 mg/kg LBM dose and 8 mg/kg LBM dose of belapectin, respectively.
In those NASH cirrhosis patients without varices at baseline (about 50% of the total population), there was a statistically significant effect of the 2 mg/kg LBM dose of belapectin on the absolute change in HVPG
(-1.08
mm Hg, p<0.01). The effect of the 8 mg/Kg LBM dose of belapectin on absolute or percent change in HVPG from baseline to week 54 was not significant.
Also because of the clinical relevance of this population, a responder analysis was performed on those patients without varices at baseline. Analysis was performed looking at two groups: those with an equal to or greater than 2 mm Hg decrease in HVPG from baseline or those with an equal to or greater than 2 mm Hg and a greater than or equal to 20% decrease in HVPG from baseline. In both cases, the change observed in the belapectin 2 mg/kg LBM group was statistically significant (p<0.01) while that of the 8 mg/kg LBM group was not.
Over the
54-week
treatment period, in patients without varices there were statistically significantly fewer new varices that developed in the belapectin treatment groups (0% and 4% in the 2 mg/kg LBM and the 8 mg/kg LBM, respectively) vs placebo (18%). As esophageal varices can lead to hemorrhagic complication, which can be fatal, we believe the prevention of esophageal varices may represent a clinically relevant measure of clinical efficacy in patients with NASH cirrhosis.
The major conclusions from the
NASH-CX
trial results were that: i) belapectin had a statistically significant and clinically meaningful effect in improving HVPG vs placebo in patients with NASH cirrhosis who did not have esophageal varices at baseline. This effect was seen regardless of the patient’s baseline portal hypertension. ii) There was an important drug effect of belapectin in the total patient population on liver biopsy with a statistically significant improvement in hepatocyte ballooning (ie cell death), (iii) There was a statistically significant reduction (p=0.02) in the development of new esophageal varices in drug-treated patients compared to placebo. We believe that this is a clinically relevant endpoint related to patient outcomes, (iv) While there was a drug effect in both the 2 mg/kg LBM and 8 mg/kg LBM groups on the development of varices and liver biopsy there was a consistently greater and statistically significant effect of the 2 mg/kg LBM dose of belapectin, (v) belapectin appears to be safe and well tolerated in this one year clinical trial, a feature that is of prime importance for a cirrhotic population and (vi) We believe this is the first large, randomized clinical trial to demonstrate a clinically meaningful improvement in portal hypertension or liver biopsy in patients with compensated NASH cirrhosis who have not yet developed esophageal varices.
Further information and details on the
NASH-CX
results summarized above is available in public presentations posted to our website and filed with the SEC and in a peer reviewed publication in
Gastroenterology
(Gastroenterology 2020;158:1334–1345).
NASH NAVIGATE Trial:
Building on the experience of the
NASH-CX
trial, the NAVIGATE Trial is a seamless adaptively-designed Phase 2b/3 clinical study evaluating the safety and efficacy of our
galectin-3
inhibitor, belapectin
(GR-MD-02),
for the prevention of esophageal varices in patient with
non-alcoholic
steatohepatitis (NASH) cirrhosis. The major features of this innovative Phase 2b/3 study design are: i) In patients with NASH cirrhosis and clinical signs of portal hypertension but without esophageal varices at baseline, this trial will assess the effect of belapectin on the incidence of new varices (the primary endpoint) – as well as assessing effect on the incidence of long-term, clinically significant cirrhosis-related outcomes (a key secondary efficacy endpoint), (ii) The study targets NASH patients with a clearly identified unmet medical need: patients with compensated cirrhosis who are at risk of developing esophageal varices, a potentially life-threatening complication of cirrhosis (bleeding varices are a cause of death in about
one-third
of cirrhotic patients). There is no approved treatment for preventing varices in these patients. In addition, the development of esophageal varices reflects the progression of hepatic cirrhosis and thus portends the development of other cirrhosis complications such as ascites, hepatic encephalopathy, and liver failure, and (iii) During the first 18 months, two belapectin dose levels (2 mg/kg LBM and 4 mg/kg LBM) will be compared to placebo (phase 2b). Then, at the interim analysis (IA), one belapectin dose will be selected based on efficacy and safety, for continued evaluation (Phase 3). The belapectin dose selected for the phase 2b/3 are based on the analysis of the
NASH-CX
trial, including a dose response pharmacokinetic analysis of the hepatic venous gradient pressure (HVPG, a reflection of portal hypertension). Prior belapectin clinical studies have also indicated the good tolerance and safety profile of belapectin with doses of up to 8 mg/kg LBM for 52 weeks (Phase 2b Study
NASH-CX),
an important feature of the future risk benefit analysis in patients with NASH cirrhosis.
The study design provides for a
pre-specified
interim analysis (IA). The IA of efficacy and safety data will be conducted after all planned subjects in Phase 2b component have completed at least 78 weeks (18 months) of treatment and an esophago-gastro-duodeno endoscopic assessment. The purpose of the IA is to allow potential seamless adaptive modifications of the study, including: (1) the selection of the optimal dose of belapectin for Phase 3, (2) the
re-estimation
of the study sample size for Phase 3 portion of the trial, (3) the
re-evaluation
of the randomization ratio for the Phase 3 portion of the trial, (4) the refinement of the inclusion and exclusion criteria for the Phase 3 portion of the trial, including the cirrhosis status, (5) and/or termination of the study for overwhelming efficacy or for futility.
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The trial design also includes a blinded sample size
re-estimation
(“SSR”) during the Phase 2b, prior to the IA, to allow for potential sample size readjustment. The SSR will be conducted when 50% of the patients have completed 18 months of therapy. This will allow us to confirm the underlying assumption regarding the rate of varices development, currently estimated from our prior Phase 2b trial
(NASH-CX).
The study design also minimizes invasive testing requirements, such as the measurement of HVPG or repeated liver biopsies, which we believe will facilitate enrollment and retention of patients. It also provides for a seamless transition of patients from the Phase 2b component into the phase 3 stage, including the potential addition of new patients. The trial design preserves the surrogate
end-point
concepts (development of new varices versus variceal hemorrhage) previously discussed with FDA.
We believe that these adaptations taken together are innovative and optimize conduct of the NAVIGATE trial with a clinically relevant primary outcome giving belapectin the best opportunity to show a positive therapeutic effect to address an unmet medical need. If the IA results of the NAVIGATE trial are compelling, there could be the potential for accelerated FDA approval and/or partnership opportunity with a pharmaceutical company.
In the Phase 3 component of this trial, as proposed in the protocol, the primary endpoint remain the development of varices. Secondary endpoints include a composite clinical outcomes endpoint, including varices requiring treatment (development of large varices or varices with a red wale), decompensating events,
all-cause
mortality, MELD score increase, liver transplant. Also, NASH
non-invasive
biomarkers will be evaluated. To target a population at risk of developing esophageal varices, patient selection will be based on clinical signs of portal hypertension, including, a low platelet count, an increased spleen size and/or evidence of collaterals circulation.
The focus and goal of the therapeutic program is to stop the progression of and/or reverse portal hypertension and thereby prevent the development of varices, potentially one of the most immediately life-threatening complication of cirrhosis. Based on the results of the
NASH-CX
trial and subject to confirmation in later stage clinical trials, we believe that this goal is achievable in a significant portion of the NASH cirrhosis patient population i.e. those NASH cirrhosis patients with clinical signs of portal hypertension.
The
COVID-19
pandemic has delayed and may continue to delay our recruitment of sites and enrollment of patients for our Phase 2b/3 NAVIGATE trial despite a recent uptick in screening activities. Many cities in the United States and Europe have experienced shut-downs, and while some cities have begun to loosen restrictions, they are at risk of experiencing new shut-downs and restrictions. In some countries, shutdown orders have also affected the regulatory process to authorize study starts. Governments and medical facilities are focusing their resources for battling the
COVID-19
pandemic. For several reasons, the pandemic makes enrolling patients for the NAVIGATE trial more challenging, including because patients eligible for the NAVIDGATE trial have liver cirrhosis and, as such, are at a greater health risk of complications from
COVID-19
until vaccinations are more readily available and completed. We believe that as more people get vaccinated for
COVID-19,
site recruitment and patient enrollment will accelerate. At this time, we estimate that enrollment completion will occur by the end of 2022.
We have identified more than 130 clinical trial sites in 11 countries for the NAVIGATE trial.
Further details on the NAVIGATE trial can be found on
www.clinicaltrials.gov
under study NCT04365868.
The Company also has commenced a Hepatic Impairment Study, which will run in parallel with the phase 2b/3 trial as part of the development program. The Hepatic Impairment Study is being conducted at three sites and will involve approximately 40 patients (divided amongst normal healthy volunteers, and patients with hepatic impairment categorized as Child-Turcotte-Pugh (CTP) classes A (mild), B (moderate), and C (severe)). Each subject will receive a single infusion of belapectin (4 mg/kg LBM) and their serum belapectin levels will be monitored for up to approximately two weeks to define the effects of various stages of cirrhosis on serum belapectin levels. The tolerance and safety of belapectin will be evaluated. Based on the results from this hepatic impairment study, the Company may consider including patients with more advanced cirrhosis in the Phase 3 portion of its NAVIGATE trial. Until dosing and safety profile is further informed in CTP Class B and/or Class C patients, the NAVIGATE trial will enroll only CTP Class A patients. Further details on this hepatic impairment study can be found on
www.clinicaltrials.gov
study NCT04332432.
Cancer Immunotherapy.
We believe there is potential for galectin inhibition to play a key role in the burgeoning area of cancer immunotherapy. For example, there have been several recent approvals of drugs that enhance a patient’s immune system to fight cancer. It is our goal to use a galectin inhibitor to further enhance the immune system function to fight cancer in a way that complements other approaches to this type of therapy. This hypothesis is supported by the fact that
galectin-3
is expressed at high levels in multiple types of tumors, adds to the malignant nature of the tumors, and protects the tumors from immune system attack. Our drug candidates provide a promising new therapeutic approach to enhance the activity of the immune system against cancer cells. Preclinical studies have indicated that belapectin enhances the immune response to cancer cells, increased tumor shrinkage and enhanced survival in immune competent mice with prostate, breast, melanoma and sarcoma cancers when combined with one of the immune checkpoint inhibitors,
anti-CTLA-4
or
anti-PD-1,
or with the immune cell activator anti-OX40. These preclinical data led to the filing of two Investigator-sponsored INDs and the initiation of studies of belapectin in combination with Yervoy
®
(ipilimumab) and KEYTRUDA (pembrolizumab) in Phase 1B studies of patients with metastatic melanoma. The KEYTRUDA trial has also been expanded to include patients with
non-small
cell lung cancer and head and neck squamous cell carcinoma. These studies are being conducted under the sponsorship of Providence Portland Medical Center’s Earle A. Chiles Research Institute (EACRI).
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Promising results were reported in the Phase 1b trial combining belapectin with pembrolizumab (KEYTRUDA
®
). Cohort 1 was completed (n=6, 5 with melanoma, one with head and neck cancer) with one partial response and one mixed response in the melanoma patients. There was a rapid and marked tumor response after 3 doses of combined belapectin and pembrolizumab in the one partial response patient who had failed high-dose
IL-2
and oncolytic virus + ipilimumab. The study is ongoing and progression to further development will be based on response rate as compared to historical response rates to pembrolizumab alone. In September 2018 we announced additional preliminary clinical data from cohort 3 of this investigator-initiated trial. When aggregated with cohorts previously reported, the data shows a 50% objective response rate in advanced melanoma with belapectin in combination with KEYTRUDA, and a significant decrease in the frequency of suppressive myeloid-derived suppressor cells following treatment in the responding patients (on day 85 post-treatment). Fourteen advanced melanoma patients across three dose cohorts now have Objective Response Rate (ORR) and Disease Control Rate (DCR) data. Six patients completed in cohort 3 (8 mg/kg LBM) have now been added to the three patients completed in cohort 2 (4 mg/kg LBM) and five patients completed in cohort 1 (2 mg/kg LBM). Cohorts 1 and 3 each had two patients with an objective response. All three patients in cohort 2 had an objective response. In addition to the fourteen advanced melanoma patients, six patients with head and neck cancer were enrolled in this trial with a 33% ORR and 67% DCR. These data, taken together with the observed favorable safety and tolerability of the combination, in the view of the principal investigator, provide compelling rationale to move forward. Given that all three melanoma patients were responders at the 4 mg/kg dose, the investigators plan to continue the trial with the expansion of the 4 mg/Kg cohort to include additional advanced melanoma patients and additional head and neck cancer patients. The expansion cohort includes 14 patients and is planned to have continued belapectin dosing to match the recommended duration of pembrolizumab administration. The expansion cohort has been enrolled and further information will be reported as it becomes available. Discussions are ongoing about the planning and feasibility of a multicenter Phase 2 study, assuming the additional expansion cohort data are positive.
Severe skin diseases.
During our Phase 1 NASH fibrosis trial with belapectin, a clinical effect on plaque psoriasis was observed in a NASH patient who also suffered from psoriasis. This patient had marked improvement in her psoriasis, with improvement beginning after the third infusion. She reported that her psoriasis was “completely gone” and her skin was “normal” after the fourth infusion. Her skin remained normal for 17 months after the final infusion of study drug. The patient is convinced that the improvement in her psoriasis is related to the study drug.
This serendipitous finding, combined with
galectin-3
protein being markedly upregulated in the capillary epithelia (small blood vessels) of the psoriatic dermis (plaque lesions), led to a phase 2a trial in patients with moderate to severe plaque psoriasis. belapectin inhibition of
galectin-3
may attenuate capillary changes in the psoriatic dermis and inflammatory recruitment, perhaps explaining the improvements observed in the NASH fibrosis trial patient. In this open-label, unblinded trial (no placebo, all patients knowingly receive active drug), 5 patients with moderate to severe plaque psoriasis were administered belapectin every two weeks for 24 weeks. In May 2016, we reported positive results on the first four patients after 12 weeks of therapy. Based on these results, we modified the trial to include 24 weeks of therapy. In August 2016, we reported on four patients after 24 weeks of therapy and one patient after 12 weeks of therapy. The four patients who received 24 weeks of therapy experienced an average of 48% improvement in their plaque psoriasis. At the end of that study, the average response in all five patients was at 50% with one patient having an 82% improvement. However, there are existing drugs on the market in this disease that produce 75% and higher improvements in
60-90%
of patients. While we are encouraged that this study has demonstrated clinically meaningful results in a human disease with belapectin, the next steps would entail a controlled, does-ranging clinical trial, which we do not expect to conduct absent a strategic partnership which is unlikely.
We believe the mechanism of action for belapectin is based upon interaction with, and inhibition of, galectin proteins, particularly
galectin-3,
which are expressed at high levels in certain pathological states including inflammation, fibrosis and cancer. While belapectin is capable of binding to multiple galectin proteins, we believe that it has the greatest affinity for
galectin-3,
the most prominent galectin implicated in pathological processes. Blocking galectin in cancer and liver fibrosis has specific salutary effects on the disease process, as discussed below.
Liver Fibrosis: New Approach for a Significant Unmet Medical Need
When an internal organ is exposed to chronic disease one of the responses is that scar tissue is laid down in the organ (this process is called fibrosis). The longer the disease affects the organ, the more fibrous tissue is deposited, and this ultimately results in the failure of the organ. This chronic fibrosis of organs may occur in the liver, lung, kidney, and heart, as well as others and, as a result, fibrosis of organs has been estimated to account for as much as 45% of all mortality in the United States. Scientific findings during the last few years indicate that the
galectin-3
protein is critically important in this fibrotic process in multiple organs.
In the liver, fibrosis is the end result of multiple inflammatory conditions and infections. Progressive liver fibrosis leads to cirrhosis, which results in reduction of liver function, multiple medical complications and ultimately death. It is estimated that one to two million patients have cirrhosis in the United States with close to 50,000 losing their lives yearly. Only a fraction of patients’ lives, approximately 6,200 per year, are saved by liver transplantation at a cost of at least $350,000 per transplantation with significant additional costs of care and medications after the transplant.
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One condition in particular that frequently leads to cirrhosis is
non-alcoholic
steatohepatitis, or NASH, a liver disease characterized by the accumulation of fat in the liver with associated inflammation and fibrosis, which can lead to
end-stage
cirrhosis requiring liver transplantation. The National Institutes of Health estimates that 9 to 15 million Americans are affected by NASH, and other sources suggest it may be as many as 30 million people have NASH, and forecasts that the number of Americans affected by this disease is growing due to obesity and diabetes, with the potential to become the leading cause of liver cirrhosis and liver transplantation in the future. Liver transplantation is currently the only therapeutic approach to NASH or other forms of liver fibrosis because, to the best of our knowledge, there are no drug therapies on the market. Organ transplantation is a difficult, risky and costly procedure, and organ availability is scarce. There is also the risk of developing cirrhosis in the transplanted liver from the same disease that damaged the patient’s original liver. Therefore, there is a great need for other therapeutic options. All diseases that affect the liver (viral hepatitis, alcoholic liver disease, and fatty liver as examples) lead to the development of scarring of the liver.
The primary focus of the Company is to use galectin inhibitors to block
galectin-3
and treat organ scarring or fibrosis in the liver. There are no approved therapies for treatment of liver fibrosis. We believe that our drug candidates have the potential to treat NASH and other forms of liver fibrosis. Scientific evidence suggests that
galectin-3
is essential for the development of liver fibrosis in animals. Published data show that mice lacking the
galectin-3
gene, and thus unable to produce
galectin-3,
are essentially incapable of developing liver fibrosis in response to toxic insult to the liver and in fatty liver disease. Moreover, mice that do not have the
galectin-3
gene are resistant to lung and kidney fibrosis. These published data show that
galectin-3
is a critical protein for the development of organ fibrosis. Our drugs, based on experiments in well characterized animal models, are also potentially useful in scarring or fibrosis of other organs such as lung and kidney which expands the possibilities for future therapeutic indications.
We have evaluated the ability of belapectin to block
galectin-3
in animal models of liver fibrosis, the conclusions of which yielded positive results. Our
pre-clinical
data show that belapectin may have a therapeutic effect on liver fibrosis as shown in several relevant animal models. Therefore, we chose belapectin as the lead candidate in a development program targeted initially at fibrotic liver disease associated with NASH.
We evaluated belapectin in
pre-clinical
toxicology and pharmacology studies during 2013, and filed an IND with the FDA in January 2013, for initiating human studies in patients with NASH. In February 2013, we entered into an agreement with CTI Clinical Trial Services to assist with the design, development and conduct of one or more clinical research studies, specifically for services with respect to our Phase 1 clinical trials to evaluate safety of belapectin in patients with NASH. The FDA notified us in March 2013 that we may proceed with a Phase 1 clinical trial for patients with NASH, and we began enrolling patients in the Phase 1 clinical trial in the third quarter of 2013. In August 2013, belapectin was granted Fast Track designation by the FDA for NASH with hepatic fibrosis, commonly known as fatty liver disease with advanced fibrosis. In January 2014, we completed the enrollment of the first cohort of patients in the Phase 1 trial with no serious adverse events being reported. We reported initial safety and tolerability results from the first cohort of patients on June 30, 2014. The second cohort of this Phase 1 trial began, and enrollment was completed in April 2014. In July 2014, we reported the results from the second cohort of patients. Enrollment of the third cohort of Phase 1 began in July 2014, with interim results presented in November 2014 with the final report on cohort 3 presented in January 2015. The results of the Phase 1 study demonstrate that (i) belapectin was safe and well tolerated by patients with advanced NASH liver fibrosis after IV administration of four doses of 2 mg/kg, 4 mg/kg and 8mg/kg lean body weight, (ii) Pharmacokinetics in patients with advanced fibrosis, but not cirrhosis, revealed drug exposure in humans at the 8 mg/kg dose that was equivalent to the upper range of the targeted therapeutic dose determined from effective doses in NASH animal models, (iii) Disease Serum Marker Effect showed there was a statistically significant, dose-dependent reduction in FibroTest
®
scores due to a statistically significant reduction in
alpha-2
macroglobulin (A2M) serum levels, and (iv) Liver Stiffness Effect, as measured by FibroScan
®
showed that there was a signal of reduced liver stiffness in patients receiving belapectin. The reduction seen in A2M does
not
necessarily mean fibrosis got better in this short study but does suggest changes in the fibrogenic process that might lead to an improvement in fibrosis with longer-term therapy. These Phase 1 results in NASH patients with advanced fibrosis, in addition to completion of further toxicology and drug-drug interaction studies provided a firm foundation for entry into a Phase 2 development program (described above). Top line results of our Phase 2b in compensated NASH cirrhosis patients was reported in December 2017 and is more fully described above as well in our SEC filings; the Phase 2b study results provide the foundation for our NAVIGATE trial which is underway.
Belapectin is a proprietary, patented galactoarabino-rhamnogalacturonan polysaccharide polymer that is comprised predominantly of galacturonic acid, galactose, arabinose, rhamnose, and smaller amounts of other sugars. Structural studies have shown that belapectin binds to
galectin-1
and to
galectin-3
with binding affinity to
galectin-3
being significantly greater than binding to
galectin-1.
With respect to belapectin, we currently have, as of December 31, 2020, 24 granted U.S. patents, and 81 foreign granted patents. These patents, which are more fully described below, include a composition of matter patent, and methods of use including manufacture, use patient in patients with NASH, in patients with liver fibrosis, and in patients with diabetic kidney disease. Additional patent applications are pending with respect to, amongst other uses, cancer immunotherapy, lung fibrotic disease, and inflammatory disease associated with increase in inducible nitric oxide synthase. Patents have also been granted with respect to liver fibrosis, NASH, and liver fibrosis in combination with other therapeutic agents.
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Galectin Inhibition in Cancer Therapy
We believe the potential exists for galectin inhibition to play an important role in cancer therapy. Galectin proteins, particularly
galectin-1
and
galectin-3,
have been shown to be highly expressed in the majority of cancers and have multiple roles in promoting cancer progression, including tumor cell invasion, metastasis, angiogenesis, and tumor evasion of the immune system.
The role of galectins in cancer immunotherapy can be understood through the “Galectin Effect”, a recent discovery of how tumors avoid the body’s own immune system, i.e., the tumors secrete galectin proteins that block the body’s efforts to fight tumors. Our current program to block the “Galectin Effect” is based on the research of Dr. Pierre van der Bruggen (of the Ludwig Institute of Cancer Research in Brussels, Belgium), demonstrating that
galectin-3,
which is produced by the vast majority of human cancers, binds to and blocks the actions of tumor-infiltrating
T-lymphocytes,
the major immune cell in the body’s defense against cancers. In addition, Dr. William L. Redmond of Providence Portland Medical Center’s Earl A. Chiles Research Institute (EACRI) has shown that our galectin inhibitors can enhance the anti-tumor immunogenic effect of other immunotherapies based on targeting lymphocyte checkpoints such as CTLA4. Based on these results, we believe that the body’s immune cells may be unable to attack and kill tumor cells in the presence of galectins. Using this approach, the mechanism of action for our drugs seeks to block galectins and, in turn, restore the ability of the
T-lymphocytes
to kill tumor cells.
The preclinical study found that belapectin increased tumor shrinkage and enhanced survival in immune competent mice with prostate or breast cancers when combined with one of the immune checkpoint inhibitors,
anti-CTLA-4
or
anti-PD-1.
These findings suggest a role for belapectin in cancer immunotherapy. These preclinical observations by Dr Redmond provided scientific rationale for proceeding and lead to the filing by Providence Portland Medical Center of an Investigator-sponsored IND to conduct a Phase 1B study to determine if belapectin enhances the probability of melanoma response with ipilimumab by inducing proliferation, activation and memory function of CD8+ T cells in human patients. The company has licensed the underlying invention from Providence Portland Medical Center. This study represents a novel approach for patients with metastatic melanoma. The IND was approved by FDA in February 2014. This study is being conducted under the sponsorship of Providence Portland Medical Center’s Earle A. Chiles Research Institute (EACRI) and is being supported by the Company.
The study employs a dose escalation of belapectin in conjunction with the standard therapeutic dose of ipilimumab in patients with advanced melanoma for whom ipilimumab would be considered standard of care. In addition to monitoring for toxicity and clinical response by irRECIST criteria on imaging tests, blood samples will be obtained to assess immunologic measures relevant to galectin biology and ipilimumab
T-cell
check-point inhibition. Galectin Therapeutics is providing its proprietary compound belapectin to EACRI researchers, as well as supplying researchers with supporting analysis of the pharmacokinetics of belapectin and the right to reference the Company’s open IND on belapectin. To date the first two dosing groups have been completed without serious adverse events that were determined to be related to belapectin. The third dosing group is no longer enrolling due to the availability of newer agents such as the
anti-PD1
agents.
Similar to the agreement set forth for the ipilimumab (Yervoy
®
) Phase 1B study, Providence Portland Medical Center submitted an IND in September 2015 to conduct a Phase 1B study of belapectin and pembrolizumab (Keytruda
®
) in patients with metastatic melanoma. The combination of belapectin and an
anti-PD1
(pembrolizumab) has been shown to enhance
T-cell
activation, memory, and effector function, and promote better antitumor responses in multiple mouse studies. The study will test the hypothesis that
galectin-3
antagonism using belapectin with enhance the probability of melanoma response using pembrolizumab in patients by inducing proliferation, activation and memory function of CD8+ T cells that recognize melanoma antigens. Similar to the ipilimumab study, the study employs a dose escalation of belapectin in conjunction with the standard therapeutic dose of pembrolizumab in patients with metastatic melanoma who have had progression of their melanoma after ipilimumab and/or BRAF targeted therapy when a BRAF mutation is present. In addition to monitoring for toxicity and clinical response, blood and tumor samples will be obtained to assess immunologic measures relevant to galectin biology and pembrolizumab
T-cell
checkpoint inhibition. Top line results of the combination of the 3 dosing cohorts was reported in September 2018 and is more fully described above as well in our SEC filings and press releases. These data, taken together with the observed favorable safety and tolerability of the combination, in the view of the principal investigator, provide compelling rationale to move forward. Given that all three melanoma patients were responders at the 4 mg/kg LBM dose, the investigators continued the trial with the expansion of the 4 mg/kg LBM cohort to include additional advanced melanoma patients and additional head and neck cancer patients. The expansion cohort has been enrolled and further information will be reported as it becomes available. Assuming these additional data are positive, the feasibility of a multicenter Phase 2 study will be evaluated. Further details on the study is available at
www.clinicaltrials.gov
(NCT02575404)
Patents and Proprietary Rights
Our development and commercial viability, and ultimately our competitiveness, depend on our ability to develop and maintain the proprietary aspects of our technology and operate without infringing on the proprietary rights of others. We rely on a combination of patent, trademark, trade secret and copyright law and contract restrictions to protect the proprietary aspects of our technologies. We seek to limit disclosure of our intellectual property by requiring employees, consultants, and any third parties with access to our proprietary information to execute confidentiality agreements and by restricting access to that information.
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In August 2015, we received a notice of allowance from the U.S. Patent and Trademark Office for patent application number 13/726,900, titled “Galactose-pronged polysaccharides in a formulation for antifibrotic therapies.” This patent extends coverage of the Company’s pectin-derived compounds (including broad molecular weight ranges and other sources of pectin) to include treatment of chronic kidney disease associated with the development of fibrosis, established kidney fibrosis, chronic lung disease associated with the development of fibrosis and established lung fibrosis. Claims in this patent include administering pectin-derived compound parenterally to a patient having at least one of the four aforementioned diseases where the established fibrosis or progression of the fibrosis or cirrhosis is inhibited or slowed down. Additional specific claims encompass deriving the compound from citrus pectin, apple pectin, soybean hull pectin or sugar beet pectin with a molecular weight between 2 kDa and 400kDa. Also covered is the step of administering the modified galacto-rhamnogalacturonan compound in an admixture with a therapeutic agent, where the agent is an antifibrotic compound.
In August 2014, we received a notice of allowance from the U.S. Patent and Trademark Office for patent application number 13/573,442 titled “Composition of Novel Carbohydrate Drug for Treatment of Human Diseases.” The patent covers composition and chemical structural claims for compounds that includes the Company’s lead galectin inhibitor compound belapectin and will expire in December 2031. Claims include multiple routes of administration, including intravenous, subcutaneous and oral. The application also covers therapeutic formulations for use in the treatment of NASH (fatty liver disease), cancer and fibrotic, inflammatory and autoimmune disorders in which galectin proteins are involved, at least in part, in the pathogenesis. Additional specific claims encompass liver fibrosis, kidney fibrosis, lung fibrosis or heart fibrosis. The patent, assigned U.S. Patent No. 8,871,925, was issued October 28, 2014.
In May 2014, we received notice of allowance from the U.S. Patent and Trademark Office for patent application number 13/998,197 titled “Galactose-Pronged Carbohydrate Compounds for the Treatment of Diabetic Nephropathy and Associated Disorders.” The patent covers both composition claim for and uses of the Company’s carbohydrate-based galectin inhibitor compound belapectin in patients with diabetic nephropathy, a type of progressive kidney disease that occurs in individuals with diabetes. Diabetic nephropathy is the major cause for chronic renal failure in the United States. The patent, assigned U.S. Patent No. 8,828,971, was issued September 9, 2014.
In February 2014, we received notice of issuance that the U.S. Patent and Trademark Office issued patent number 8,658,787 to the Company for its application titled “Galacto-rhamnogalacturonate compositions for the treatment of
non-alcoholic
steatohepatitis and
non-alcoholic
fatty liver disease.” The patent covers the Company’s carbohydrate-based galectin inhibitor compound belapectin for use in patients with fatty liver disease with or without fibrosis or cirrhosis, providing patent protection through 2031. The major claims are for methods of obtaining galectin inhibitor compounds, obtaining a composition for parenteral or enteral administration in an acceptable pharmaceutical carrier and administering to a subject having at least one of the following: fatty liver,
non-alcoholic
fatty liver disease,
non-alcoholic
steatohepatitis,
non-alcoholic
hepatitis with liver fibrosis,
non-alcoholic
steatohepatitis with cirrhosis, or
non-alcoholic
steatohepatitis with cirrhosis and hepatocellular carcinoma. The use covers reversing or slowing the progression of disease activity or medical consequences of the disease. Applications are pending in multiple countries to extend patent protection globally.
In January 2014, we received a notice of allowance from the U.S. Patent and Trademark Office for Patent Application Number 13/550,962 titled “Galactose-Pronged Polysaccharides in a Formulation for Anti-fibrotic Therapies.” The patent covers both composition claim for and uses of the Company’s carbohydrate-based galectin inhibitor compound belapectin for use in patients with liver fibrosis in combination with other potential therapeutic agents. The patent covers use of belapectin with agents directed at multiple targets, some of which are currently in clinical development for fibrotic disorders including monoclonal antibodies to connective tissue growth factor, integrins, and
TGF-ß1.
The patent, assigned U.S. Patent No. 8,722,645, was issued May 13, 2014.
In July 2012, we received a notice of issuance from the U.S. Patent and Trademark Office for the U.S. Patent number 8,236,780 issued on August 7, 2013 titled “Galactose-prolonged polysaccharides in a formulation for antifibrotic therapies”. This methods patent covers key methods of derivation and use for our carbohydrate-based galectin inhibitor compound for use in patients with chronic liver disease associated with the development of fibrosis, established liver fibrosis or
end-stage
scarring, or cirrhosis. The major claim is for a method of obtaining a galacto-rhamnogalacturan compound from an apple pectin, obtaining a composition for parenteral administration the galacto-rhamnogalacturonan compound in an acceptable pharmaceutical carrier and administering to a subject having at least one of the following: chronic liver disease associated with the development of fibrosis, established liver fibrosis or cirrhosis. The use covers inhibiting or slowing the progression of fibrosis. belapectin is covered by this patent and it provides opportunities for development of additional compounds in the class.
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As of December 31, 2020, Galectin Therapeutics Inc. held 24 granted U.S. patents, 81 foreign granted, 6 Foreign patent applications allowed, 7 Foreign patent applications pending, and 2 U.S. patent applications pending. Many of our patents and patent applications cover composition of matter for complex carbohydrate drugs and/or methods of use for reducing toxicity and enhancing chemotherapeutic drugs by
co-administering
a polysaccharide with a chemotherapeutic agent or for use in treatment of fibrosis. The scheduled expiration dates of our United States patents span out to 2034 before considering any potential extensions. We have corresponding patent applications pending in various territories where we see potential for commercial interest. Additionally, we have patent applications in other areas to utilize our carbohydrate-based compounds to treat disease other than cancer. See “Risk Factors — Risks Related to Our Intellectual Property”. Our competitive position, in part, is contingent upon protection of our intellectual property. Galectin Sciences LLC has 1 granted international patent, 1 international patent allowed, 5 US patent application pending, and 46 foreign applications pending.
Research
Our primary focus is on the design and testing of agents that target galectins in various
in vitro
and
in vivo
systems and that demonstrate efficacy in treatment of experimentally induced fibrosis or enhance immune system responsiveness in various tissues and in live animal models. We contract with independent laboratories and other facilities to conduct our research, which is designed, evaluated and managed by our scientists. While we conduct in house research related to our compounds at SBH laboratories in Massachusetts, we do not anticipate building additional
in-house
research or development facilities or hiring significantly additional staff other than for purposes of designing and managing our
out-sourced
research and development activities.
As we develop products eligible for clinical trials, we contract with independent parties to assist in the design of the clinical trial protocols, arrange for and monitor the clinical trials, collect data and analyze data. In addition, certain clinical trials for our products may be conducted by government-sponsored agencies and will be dependent on governmental participation and funding. Our dependence on independent parties and clinical sites involves risks including reduced control over the timing and other aspects of our clinical trials.
In September 2014, the Company established a collaborative research program with Dr. William Redmond’s laboratory located at the Providence Portland Medical Center, Portland, Oregon. This program focuses on combination immunotherapy plus galectin inhibition to augment tumor immunogenicity.
During the years ended December 31, 2020 and 2019, our expenditures for research and development were $18.0 million and $7.5 million, respectively. We expense all research and development costs as they are incurred.
In January 2014 we created, with SBH Sciences, Inc. (Natick, Ma), Galectin Sciences, LLC, a collaborative joint venture to research and develop small organic molecule inhibitors of
galectin-3
for oral administration.
Using computer molecular modeling techniques coupled with
in vitro
screening of a variety of compound libraries, SBH Sciences had identified several small organic molecules with promising
galectin-3
inhibitory activity
in vitro
. Galectin Sciences LLC will further develop these unique organic molecule inhibitors of
galectin-3
as drug candidates as well as develop additional candidates. Subject to availability of funding, Galectin Sciences LLC will build on the scientific body of knowledge amassed by SBH Sciences, coupled with Galectin Therapeutics’ knowledge and expertise of galectins’ pathological role and mechanism of action in inflammation, fibrosis and many cancers. The long-term goal of this effort is to identify and develop drug candidates that are highly specific galectin inhibitors which may be formulated for oral administration. The intermediate term goal is the development of small molecule inhibitors of
galectin-3
which exhibit activity in
in vivo
preclinical disease models of fibrosis and cancer in which galectins play a key role. Several patent applications have been filed to protect the various series of compounds discovered by these efforts.
Because increased levels of galectin proteins have been implicated in a very large number of inflammatory, fibrotic and neoplastic diseases; the discovery and development of orally active galectin inhibitors would be a major step towards expanded treatment approaches for these disorders. This early drug discovery effort may lead to drugs that would expand our pipeline as
follow-on
compounds to our first in class galectin inhibitors, belapectin and
GM-CT-01.
These efforts have identified several potential compounds which are continuing to be explored to identify lead molecules that may be identified for clinical development.
Manufacturing and Marketing
We are a development stage Company at this time and do not intend to establish internal facilities for the manufacture of our products for clinical or commercial production. To have our products manufactured, we have developed and will continue to develop relationships with third-parties that have established pharmaceutical manufacturing capabilities and expertise. We are not a party to any long-term agreement with any of our suppliers and, accordingly, we have our products manufactured on a purchase-order basis from one of two primary well-known and established pharmaceutical suppliers that meet FDA requirements. Additionally, belapectin is manufactured as a sterile liquid formulation. We have experienced, and may experience in the future, certain delays related to
COVID-19
related supply issues with certain components necessary to manufacture belapectin.
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Because our products are in the development stage, we have not created a sales and marketing staff to commercialize pharmaceutical products. If we develop products eligible for commercial sale, we will need to develop a sales and marketing capability or rely on third parties such as licensees, collaborators, joint venture partners or independent distributors to market and sell those products. Our dependence on third-party manufacturers, analytical testing and other laboratories and marketers will involve risks relating to our reduced control, and other risks including those discussed in “Risk Factors — Risks Related to our Company — There are risks associated with reliance on our third parties for manufacturing, marketing, sales, managed care and distribution infrastructure channels.”
Competition
Many biotechnology and pharmaceutical companies are developing new technologies for the treatment of cancer, fibrotic diseases and other diseases. Technologies such as monoclonal antibodies could be competitive with our galectin therapeutic platforms. Other companies are trying to improve the therapeutic profile of widely used protein-based drugs. While these companies may broaden the market for our products they may also provide competitive alternatives to our products. We expect increased competition in the area of galectins will be fueled by a nearly exponential increase in the publication rate of research papers on galectins.
See “Risk Factors — Risks Related to Our Company — We face intense competition in the biotechnology and pharmaceutical industries” for additional discussion related to our current and potential competition.
Government Regulation
The research, development, testing, manufacture, labeling, promotion, advertising, distribution, and marketing, among other things, of our products are extensively regulated by governmental authorities in the United States and other countries. The FDA regulates drugs under the federal Food, Drug, and Cosmetic Act and its implementing regulations. Failure to comply with the applicable U.S. requirements may subject us to administrative or judicial sanctions, such as FDA refusal to approve pending New Drug Applications (“NDAs”), warning letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, and/or criminal prosecution.
Drug Approval Process
Drugs may not be marketed in the U.S. until the FDA has approved them. The steps required before a drug may be marketed in the U.S. include:
1. Pre-clinical laboratory tests, animal studies, and formulation studies,
4. Submission to the FDA of a NDA,
6. FDA review and approval of the NDA, and
Pre-clinical
tests include laboratory evaluation of product chemistry, toxicity, and formulation, as well as numerous in vitro and in vivo animal studies. The results of the
pre-clinical
tests, together with manufacturing information and analytical data, are submitted to the FDA as part of an IND, which must become effective before human clinical trials may begin and the Company must resolve any outstanding FDA concerns or questions before clinical trials can proceed. There is no certainty that submission of an IND will result in the FDA allowing clinical trials to begin.
Clinical trials involve the administration of the investigational drug to human subjects under the supervision of qualified investigators and constant oversight by the FDA or foreign regulatory authorities. Clinical trials are conducted under protocols detailing the objectives of the study, the parameters to be used in monitoring safety, and the effectiveness criteria to be evaluated. Each protocol must be submitted to the FDA as part of the IND.
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Clinical trials typically are conducted in three sequential phases, but the phases may overlap or be combined. Each trial must be reviewed and approved by an independent Institutional Review Board (“IRB”), before it can begin. Study subjects must sign an informed consent form before participating in a clinical trial. Phase 1 usually involves the initial introduction of the investigational drug into patients to evaluate its safety, dosage tolerance, pharmacodynamics, and, if possible, to gain an early indication of its effectiveness. Phase 2 usually involves trials in a limited patient population to (i) evaluate dosage tolerance and appropriate dosage; (ii) identify possible adverse effects and safety risks; and (iii) evaluate preliminarily the efficacy of the drug for specific indications. Phase 3 trials usually further evaluate clinical efficacy and test further for safety by using the drug in its final form in an expanded patient population. There is no assurance that these trials will be completed within a specified period of time, if at all.
Assuming successful completion of the required clinical testing, the results of the
pre-clinical
studies and of the clinical studies, together with other detailed information, including information on the manufacture and composition of the drug, are submitted to the FDA in an NDA requesting approval to market the product for one or more indications. Before approving an NDA, the FDA usually will inspect the facilities at which the drug is manufactured and will not approve the product unless compliance with cGMP is satisfactory. If the FDA evaluates the NDA and the manufacturing facilities as acceptable, the FDA will generally issue an approval letter. If the FDA evaluates the NDA submission or the manufacturing facilities as not acceptable, the FDA will generally outline the deficiencies in the submission and often will request additional testing or information. Even if an applicant submits the requested additional information, the FDA ultimately may decide that the NDA does not satisfy the regulatory criteria for approval. The testing and approval process require substantial time, effort, and financial resources, and there is no assurance that any approval will be granted on a timely basis, if at all. After approval, certain changes to the approved product, such as adding new indications, manufacturing changes, or additional labeling claims are subject to further FDA review and approval.
See “Risk Factors — Risks Related to the Regulation of Our Products — We will need regulatory approvals to commercialize our products” for additional discussion of regulatory risks related to our drug development program.
FDA Priority Review
FDA procedures provide for priority review of an NDA submitted for drugs that, compared to currently marketed products, offer a significant improvement in the treatment, diagnosis, or prevention of a disease. NDAs that are granted priority review are acted upon more quickly than NDAs given standard review. If we were to seek priority review, there can be no guarantee that the FDA will grant priority review status, that priority review status will affect the time of review, or that the FDA will approve the NDA submitted for any of our product candidates, whether or not priority review status is granted.
Post-Approval Requirements
If FDA approval of one or more of our products is obtained, we will be required to comply with a number of post-approval requirements. For example, holders of an approved NDA are required to report certain adverse reactions to the FDA and to comply with certain requirements concerning advertising and promotional labeling for their products. Also, quality control and manufacturing procedures must continue to conform to current Good Manufacturing Practices (“cGMP”) after approval, and the FDA periodically inspects manufacturing facilities to assess compliance with cGMP. Accordingly, manufacturers must continue to expend time, money, and effort in the area of production and quality control to maintain cGMP compliance. In addition, discovery of problems with a product after approval may result in restrictions on a product, manufacturer, or holder of an approved NDA, including withdrawal of the product from the market. Also, new government requirements may be established that could delay or prevent regulatory approval of our products under development.
Regulation Outside the United States
Before our products can be marketed outside of the United States, they are subject to regulatory approval similar to that required in the United States, although the requirements governing the conduct of clinical trials, product licensing, pricing and reimbursement vary widely from country to country. No action can be taken to market any product in a country until an appropriate application has been approved by the regulatory authorities in that country. The current approval process varies from country to country, and the time spent in gaining approval varies from that required for FDA approval. In certain countries, the sales price of a product must also be approved. The pricing review period often begins after market approval is granted. No assurance can be given that even if a product is approved by a regulatory authority, satisfactory prices will be approved for such product.
Environmental Regulation
Pharmaceutical research and development involves the controlled use of hazardous materials. Biotechnology and pharmaceutical companies must comply with laws and regulations governing the use, generation, manufacture, storage, air emission, effluent discharge, handling and disposal of certain materials, biological specimens and wastes. We do not anticipate building
in-house
research, development or manufacturing facilities, and, accordingly, do not expect to have to comply directly with environmental regulation. However, our contractors and others conducting research, development or manufacturing activities for us may be required to incur significant compliance cost, and this could in turn could increase our expense or delay our completion of research or manufacturing programs.
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Employees
As of February 28, 2021, we currently have six full-time employees, three of whom are involved primarily in management of our
pre-clinical
research and development and clinical trials and three who were involved primarily in management and administration of our Company. As previously announced, Dr. Pol F. Boudes, MD joined us as Chief Medical Officer on March 2, 2020. We also utilize several contractors and consultants who provide product development, manufacture, analytical testing, clinical trial expertise, and clinical trial support.
Available Information
The Company is required to file annual, quarterly and current reports, proxy statements and other information with the Securities and Exchange Commission (“SEC”), including Annual Reports on Form
10-K,
Quarterly Reports on Form
10-Q,
Current Reports on Form
8-K
and amendments to reports filed pursuant to Sections 13(a) and 15(d) of the Securities Exchange Act of 1934. The SEC maintains an Internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC at http://www.sec.gov. The Company’s website is www.galectintherapeutics.com. The information contained on, or hyperlinked from, our website or any other websites is not a part of, nor is it incorporated by reference into, this Annual Report on Form
10-K.
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Item 1A. Risk Factors
An investment in our common stock involves a high degree of risk. You should carefully consider the risks described below and the other information before deciding to invest in our common stock. The risks described below are not the only ones facing our Company. Additional risks not presently known to us or that we currently consider immaterial may also adversely affect our business. We have attempted to identify below the major factors that could cause differences between actual and planned or expected results, but we cannot assure you that we have identified all of those factors.
If any of the following risks actually happen, our business, financial condition and operating results could be materially adversely affected. In this case, the trading price of our common stock could decline, and you could lose all or part of your investment.
Risks Related to Our Company
We have incurred net losses to date and must raise additional capital in order to continue to operate.
We have incurred net losses in each year of operation since our inception in July 2000 and have no revenues. Our accumulated deficit as of December 31, 2020 was $240 million. We had $27.1 million of unrestricted cash as of December 31, 2020. In December 2018, the Company announced an extension of its, as yet untapped, $10 million unsecured line of credit facility with stockholder and director, Richard E. Uihlein. The Company believes there is sufficient cash, including availability of the line of credit, to fund currently planned operations at least through March 31, 2022. We will require more cash to fund our operations after March 31, 2022 and believe we will be able to obtain additional financing. However, there can be no assurance that we will be successful in obtaining such new financing or, if available, that such financing will be on terms favorable to us.
We may raise capital through public or private equity financings, partnerships, debt financings, bank borrowings, or other sources. Additional funding may not be available on favorable terms or at all. Our most recent significant financing, a rights offering closing in 2019 in which the Company raised $44.9 million, was led by our Chairman, Richard E. Uihlein, who invested $20 million in the offering. Concurrent with the rights offering, Mr. Uihlein exercised 500,000 common stock warrants for cash proceeds to the Company of $2.5 million. Though his investments in the Company and the line of credit that he extended to the Company, Mr. Uihlein has been a critical source of funding. There is no assurance as to the level of future investments to be made in the Company by Mr. Uihlein. If adequate funds are not otherwise available, we may need to significantly curtail operations. To obtain additional funding, we may need to enter into arrangements that require us to relinquish rights to certain technologies, products and/or potential markets. To the extent that additional capital is raised through the sale of equity, or securities convertible into equity, our equity holders may experience dilution of their proportionate ownership of the Company.
We are a development stage company and have not yet generated any revenue.
We are a development stage company and have not generated any revenues to date. There is no assurance that we will obtain FDA approval of belapectin or other products that we may develop, and, even if we do so, that we will generate revenue sufficient to become profitable. Our failure to generate revenue and profit would likely lead to loss of your investment.
Our ability to generate revenue from product sales and achieve profitability will depend upon our ability to successfully commercialize products, including our lead product candidate, or other product candidates that we may
in-license
or acquire in the future. Even if we are able to successfully achieve regulatory approval for these product candidates, we do not know when any of these products will generate revenue from product sales for us, if at all. Our ability to generate revenue from product sales from our current or future product candidates also depends on a number of additional factors, including our ability to:
• successfully complete all required regulatory agency inspections;
• set a commercially viable price for our products;
• obtain commercial quantities of our products at acceptable cost levels;
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In addition, because of the numerous risks and uncertainties associated with product development, including that our product candidates may not advance through development or achieve the endpoints of applicable clinical trials, we are unable to predict the timing or amount of increased expenses, or when or if we will be able to achieve or maintain profitability. Even if we are able to complete the development and regulatory process for any product candidates, we anticipate incurring significant costs associated with commercializing these products.
If we are unable to generate revenues from the sale of our products, we may not become profitable and may need to obtain additional funding to continue operations. If we fail to become profitable or are unable to sustain profitability on a continuing basis, then we may be unable to continue our operations at planned levels and be forced to reduce our operations.
We are dependent on the success of our lead product candidate, belapectin, and we cannot be certain that these product candidates will receive regulatory approval or be successfully commercialized.
We currently have no products for sale, and we cannot guarantee that we will ever have any drug products approved for sale. We and our product candidates are subject to extensive regulation by the FDA and comparable regulatory authorities in other countries governing, among other things, research, testing, clinical trials, manufacturing, labeling, promotion, selling, adverse event reporting and recordkeeping. We are not permitted to market any of our product candidates in or outside the United States until we receive approval of a new drug application for a product candidate from the FDA or the equivalent approval from a foreign regulatory authority. Obtaining FDA approval is a lengthy, expensive and uncertain process.
Before obtaining regulatory approval for the sale of any drug candidate, we must conduct extensive
pre-clinical
studies and clinical trials to demonstrate the safety and efficacy of our product candidates in humans.
To obtain FDA approval, we will need to conduct one or more Phase 3 clinical trial for belapectin; however, we cannot assure you that we will be able to finance Phase 3 trials. Additionally, we cannot assure you that future our trials will yield successful results, that they will lead to the generation of revenue, or that we will obtain regulatory approval in other countries.
Pre-clinical
studies and clinical trials are expensive, time-consuming and ultimately may not be successful. The results of
pre-clinical
and initial clinical testing of these products may not necessarily indicate the results that will be obtained from later or more extensive testing. Also, it is possible to suffer significant setbacks in advanced clinical trials, even after obtaining promising results in earlier trials. For example, although there was positive data from our
NASH-CX
Phase 2 trial for belapectin it did not meet its primary endpoint. Similarly, our Phase 2a pilot trial
NASH-FX
for patients with advanced fibrosis, which explored three
non-invasive
imaging technologies, did not meet its primary endpoint. We may engage others to conduct our clinical trials, including clinical research organizations and, possibly, government-sponsored agencies. Additional clinical trials may not start or be completed as we forecast and may not achieve the desired results. The time required to obtain FDA and other approvals is unpredictable but often can take years following the commencement of clinical trials, depending upon the complexity of the drug candidate.
Difficulty and delays in enrolling patients and registering sites for conducting clinical trials may prevent or delay product development and strain our limited financial resources.
Other life sciences companies also conducting clinical trials in patients with the disease indications that our product candidates target. As a result, we must compete with them for clinical sites, physicians and the limited number of patients who fulfill the stringent requirements for participation in clinical trials. Also, due to the confidential nature of clinical trials, we do not know how many of the eligible patients may be enrolled in competing studies and who are consequently not available to us for our clinical trials.
In addition, our clinical trials have been affected by and may continue to be affected by the
COVID-19
pandemic. Clinical site initiation and patient enrollment as well as availability of certain required lab kits for our
non-COVID-19
product candidates have been and may continue to be delayed due to prioritization of hospital resources toward the
COVID-19
pandemic. Some patients have not been and others may not want or be able to comply with clinical trial protocols if quarantines impede patient movement or interrupt healthcare services. Similarly, any inability to recruit and retain patients and principal investigators and site staff who, as healthcare providers, may have heightened exposure to
COVID-19,
may adversely impact our clinical trial operations.
Patient enrollment depends on many factors, including the size of the patient population, the nature of the trial protocol, the proximity of patients to clinical sites, the eligibility criteria for the study and potential reduced enrollment due to the
COVID-19
pandemic. The delay or inability to meet planned patient enrollment may result in increased costs and delays or termination of the trial, which could have a harmful effect on our ability to develop products
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Even if we receive regulatory approval, we may be unable to commercialize our product candidates.
Even if belapectin and other future product candidates achieve positive results in clinical trials, we may be unable to commercialize them. The availability of government and third-party payer reimbursement, and pricing, especially compared to competitor products, could affect our ability to commercialize our product candidates. Our general inability to obtain necessary regulatory approvals and, if obtained, to commercialize our products would substantially impair our viability.
There are risks associated with our reliance on third parties to design trial protocols, arrange for and monitor the clinical trials, and collect and analyze data.
As we develop products eligible for clinical trials, we will contract with independent parties to assist us in the design of the trial protocols, arrange for and monitor the clinical trials, provide lab kits, collect data and analyze data and samples. In addition, certain clinical trials for our products may be conducted by government-sponsored agencies and will be dependent on governmental participation and funding. We have contracted with a third party, Covance, for assistance with the design and conduct of our NAVIGATE trial.
Our dependence on independent parties and clinical sites involves risks including reduced control over the timing and other aspects of our clinical trials.
There are risks associated with our reliance on third parties for manufacturing belapectin.
We do not have, and do not now intend to develop, facilities for the manufacture of any of our products, including belapectin, for clinical or commercial production. At this time, we are not a party to any long-term agreement with any of our suppliers, and accordingly, we have our products manufactured on a purchase-order basis from one of two primary suppliers. We are developing relationships with manufacturers and will enter into collaborative arrangements with licensees or have others manufacture our products on a contract basis. We expect to depend on such collaborators to supply us with products manufactured in compliance with standards imposed by the FDA and foreign regulators.
We are exposed to
pre-clinical
and clinical liability risks which could place a financial burden upon us, should we be sued, because we do not currently have product liability insurance beyond our general insurance coverage.
Our business exposes us to potential