- Improvements in physiologic liver function and key NASH biomarkers including ALT, ProC3, PIIINP and ELF -
- Results reinforce rencofilstat’s direct antifibrotic mode of action; increases confidence for reductions in fibrosis in ongoing Phase 2b ‘ASCEND-NASH’ paired biopsy trial -
ALTITUDE-NASH met its primary endpoint by demonstrating improved physiologic liver function and was well tolerated after four months of treatment in subjects with stage 3 or greater fibrosis based on the AGILE 3+ criteria. All additional secondary endpoints were also met, including reductions in the liver injury biomarkers, alanine and aspartate transaminases (“ALT” and “AST”); and multiple fibrosis-associated biomarkers, including ProC3 (procollagen 3 C-terminal peptide), PIIINP (procollagen 3 N-terminal peptide), TIMP1 (tissue inhibitor of metalloproteinase-1), hyaluronic acid, and enhanced liver fibrosis (“ELF”) scores (composite of PIIINP, TIMP1, and hyaluronic acid). These observations build on similar findings from a shorter Phase 2a trial and reinforce rencofilstat’s direct antifibrotic mode of action and increase the confidence for reductions in fibrosis in Hepion’s ongoing Phase 2b ASCEND-NASH paired biopsy trial.
“We are thrilled that the ALTITUDE-NASH trial met both its primary efficacy and safety endpoints, in particular with the 225 mg rencofilstat dose showing the greatest benefit to liver function and multiple NASH-associated biomarkers,” said
Primary Endpoint: Four Measures of Liver Impairment Significantly Improved Compared to Baseline with Four Months Rencofilstat 225 mg Treatment
The HepQuant SHUNT Test was used in this study under an
Table 1: HepQuant Test Results in All Subjects with Paired Data (n=61)
All Doses | 75 mg | 150 mg | 225 mg | |
% of Subjects with a 2-point or Greater Decrease in DSI | ||||
32.8 (20/61) | 26.1 (6/23) | 15.0 (3/20) | 61.1 (11/18)§ | |
Mean Difference from Baseline to Day 120 | ||||
BMI (kg.m-2) | -0.04 | 0.21 | -0.09 | -0.31 |
DSI (score) | -0.55 | -0.41 | 0.24 | -1.62* |
SHUNT (%) | -1.7* | -2.1 | -0.2 | -2.8* |
HR (%) | 1.3 | 1.4 | -1.1 | 3.9** |
RISK ACE (Events per 100 patient-years) | -1.2*** | -1.5 | -0.8*** | -1.2*** |
*p < 0.05; **p < 0.01; ***p < 0.001; paired t-test, no correction for multiple comparisons
§Chi-Square p < 0.05
In subjects with the most advanced functional impairment, four measures of liver impairment significantly improved compared to baseline with rencofilstat treatment for 4 months, independent of dose.
To address the potential of rencofilstat for patients with the most advanced functional impairment and greatest risk of disease progression, an analysis was conducted on the 34 subjects with DSI>17 or SHUNT%>25 as research indicates these subjects are at high risk for hepatic complications (Table 2). In this subgroup, independent of rencofilstat dose, statistically significant decreases at Day 120 compared to baseline were again observed for DSI score (mean Δ = -1.30 units; p<0.05), SHUNT% (mean Δ = -3.4%; p<0.01), HR% (mean Δ = 2.9%; p<0.05), and RISK ACE (mean Δ = -1.6 events per 100 patient-years; p<0.01). The large reduction in SHUNT% suggests alleviation of micro-architectural defects as anticipated from an antifibrotic agent and suggests that rencofilstat may be most effective in patients with more severe liver impairment.
Table 2: HepQuant Test Results in Functionally Impaired Subjects with Paired Data (n=34)
All Doses | 75 mg | 150 mg | 225 mg | |
% of Subjects with a 2-point or Greater Decrease in DSI | ||||
41.2 (14/34) | 50.0 (6/12) | 16.7 (2/12) | 60.0 (6/10) | |
Absolute Change from Baseline to Day 120 | ||||
BMI (kg m-2) | 0.17 | 0.16 | 0.35 | 0.00 |
DSI (score) | -1.30* | -2.05 | -0.17 | -1.76* |
SHUNT (%) | -3.4** | -5.8* | -1.0 | -3.4 |
HR (%) | 2.9* | 4.6 | -0.4 | 5.0* |
RISK ACE& (Events per 100 patient-years) | -1.6** | -2.3 | -1.0** | -1.5*** |
*p < 0.05; **p < 0.01; ***p < 0.001; paired t-test, no correction for multiple comparisons
Secondary Endpoints: Fibrosis- and Injury-Associated Biomarkers Improved with all Doses of Rencofilstat, with the Greatest Reductions Observed with the 225 mg Arm
Multiple biomarkers related to fibrosis were improved following four months of treatment with rencofilstat: ProC3, PIIINP, TIMP1, and hyaluronic acid. ELF scores were similarly improved by rencofilstat. Robust reductions in ALT and AST were also observed with all doses of rencofilstat, with the greatest reductions seen in the 225 mg rencofilstat dosing arm. Incremental dose-response patterns were observed for most of the biomarkers, and in all cases the largest reductions from baseline for each of the biomarkers occurred in the 225 mg rencofilstat group (Table 3).
Table 3: Percent Change from Baseline in Key NASH Biomarkers After Four Months Treatment with Rencofilstat
All Subjects: Safety Population | 75 mg rencofilstat n=23 | 150 mg rencofilstat n=21 | 225 mg rencofilstat n=21 |
%Change | %Change | %Change | |
ALT | -3.37*,**** | -13.01*,** | -21.63*,** |
AST | 4.54*,** | -8.64*,** | 4.68* |
ProC3 | -6.47 | -11.12* | -9.58*,**** |
PIIINP | 2.75 | -0.47* | -5.6* |
TIMP1 | 3.76 | 30.5 | -3.9 |
Hyaluronic acid | 11.67 | -13.18* | -10.67* |
ELF score | 1.03* | 3.85*,** | -2.51*,** |
*Different from Baseline p < 0.001, Friedman ANOVA, **Different from 75 mg Dose p< 0.01,
***Different from 150 mg Dose, ****All Doses p < 0.001.
Rencofilstat 225 mg in high-risk population led to the greatest improvements in NASH biomarkers.
Additional analyses were performed on the approximate one-third of subjects with elevated baseline ProC3, which assesses the formation of type III collagen and indicates both severity and activity of disease. Because Pro-C3 is a measure of collagen cleavage during active fibrinogenesis, subjects with high ProC3 levels represent a NASH population with more active disease, therefore representing an important target population for many NASH drug candidates. In ALTITUDE-NASH, the greatest magnitude of effects was observed with 225 mg rencofilstat (Table 4), and most frequent dose-dependencies were observed in subjects with baseline ProC3>37.5 ng/ml (Roche,
Table 4: Percent Change From Baseline in NASH Biomarkers in Subjects with ProC3 ≥ 37.5 ng/ml
75 mg rencofilstat n=10 | 150 mg rencofilstat n=7 | 225 mg rencofilstat n=6 | |
%Change | %Change | %Change | |
ALT | -13.24*,*** | -32.24* | -37.78*,** |
AST | 6.73*,**** | -30.72**** | -11.34*,** |
ProC3 | -3.39**** | -17.05**** | -16.23*,**** |
PIIINP | -1.22**** | -7.36*,** | -21.48*,** |
TIMP1 | 2.4 | -6.69* | -4.77* |
Hyaluronic acid | -4.56*,**** | 6.99*,** | -19.66*,** |
ELF score | -0.95*,**** | -1.64*,** | -5.31*,** |
*Different from Baseline p < 0.001, Friedman ANOVA, **Different from 75 mg Dose p< 0.01,
***Different from 150 mg Dose, ****All Doses p < 0.001.
Primary Safety and Tolerability Endpoints Met with No Serious Adverse Events Attributed to Rencofilstat
Of the 70 subjects enrolled in the study, 67 completed all study procedures including 120 days oral dosing of rencofilstat with a 14-day routine safety follow up period. Rencofilstat was well tolerated, with no trends in adverse events or safety signals identified. There were no deaths or hepatic decompensation events recorded in the trial, and a total of five serious adverse events (SAEs) occurred with four unrelated to study drug (COVID-19, headache, fibula fracture, COPD) and a single SAE (biliary acute pancreatitis) classified as possibly related to study drug in a subject diagnosed with a pancreatic stone as the likely source for the pancreatitis. Other safety labs, EKGs, and physical exams did not reveal any safety signals or concerns over the course of the study.
Study Design and Objectives
ALTITUDE-NASH was designed as a Phase 2, multi-center, randomized, open label study. F3 NASH subjects were identified by having a baseline AGILE 3+ screening score of ≥0.53 or historical biopsy obtained within the preceding 6 months. The AGILE 3+ score is calculated using FibroScan fibrosis score, laboratory values (AST, ALT, platelets), and clinical parameters (age, sex, diabetes status). Subjects were randomized to one of three rencofilstat treatment groups receiving either 75 mg, 150 mg, or 225 mg soft gelatin capsules once daily for a period of 4 months. The HepQuant Shunt test was administered at baseline, Day 60, and Day 120 of treatment in addition to serum analyses for safety and efficacy markers at each study visit. End-of-study liver biopsies or other measures of structural extracellular matrix changes were not collected due to the relatively short duration of treatment. The objectives were to: investigate liver function and safety; confirm the positive results observed in the 28-day Phase 2a AMBITION clinical trial; and collect additional data to support Hepion’s AI-based precision medicine program (AI-POWR™) which will be used to optimize future studies and patient outcomes. This trial also serves as a bridge to Hepion’s current 12-month Phase 2b ASCEND-NASH liver biopsy-based trial.
The HepQuant SHUNT procedure was chosen as the primary endpoint in ALTITUDE-NASH based on its ability to quantify the severity of hepatic dysfunction and portal-systemic shunting. Currently under review by FDA, the procedure measures clearance by the liver of administered doses of an isotopically labeled bile salt, cholate, which reflects an important physiologic function of the liver. The test is minimally invasive and is able to sensitively track changes in the degree of liver function impairment. This contrasts with liver biopsy results, which are obtained through a more invasive procedure and only documents liver pathology, not liver function. Further, according to
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About
The Company's lead drug candidate, rencofilstat, is a potent inhibitor of cyclophilins, which are involved in many disease processes. Rencofilstat has been shown to reduce liver fibrosis and hepatocellular carcinoma tumor burden in experimental disease models and is currently in Phase 2 clinical development for the treatment of NASH. In
Hepion has created a proprietary AI platform, called AI-POWR™, which stands for Artificial Intelligence - Precision Medicine; Omics (including genomics, proteomics, metabolomics, transcriptomics, and lipidomics); World database access; and Response and clinical outcomes. Hepion intends to use AI-POWR™ to help identify which NASH patients will best respond to rencofilstat, potentially shortening development timelines and increasing the observable differences between placebo and treatment groups. In addition to using AI-POWR™ to drive its ongoing NASH clinical development program, Hepion intends to use the platform to identify additional potential indications for rencofilstat to expand the company's footprint in the cyclophilin inhibition therapeutic space.
Forward-Looking Statements
Certain statements in this press release are forward-looking within the meaning of the Private Securities Litigation Reform Act of 1995. These statements may be identified by the use of forward-looking words such as “anticipate,” “believe,” “forecast,” “estimated,” and “intend,” among others. These forward-looking statements are based on Hepion Pharmaceuticals’ current expectations and actual results could differ materially. There are a number of factors that could cause actual events to differ materially from those indicated by such forward-looking statements. These factors include, but are not limited to, substantial competition; our ability to continue as a going concern; our need for additional financing; uncertainties of patent protection and litigation; risks associated with delays, increased costs and funding shortages caused by the COVID-19 pandemic; uncertainties with respect to lengthy and expensive clinical trials, that results of earlier studies and trials may not be predictive of future trial results; uncertainties of government or third party payer reimbursement; limited sales and marketing efforts and dependence upon third parties; and risks related to failure to obtain FDA clearances or approvals and noncompliance with FDA regulations. As with any drug candidates under development, there are significant risks in the development, regulatory approval, and commercialization of new products. There are no guarantees that future clinical trials discussed in this press release will be completed or successful, or that any product will receive regulatory approval for any indication or prove to be commercially successful.
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