Dataset Information

Safety, tolerability, and anti-fibrotic efficacy of the CBP/β-catenin inhibitor PRI-724 in patients with hepatitis C and B virus-induced liver cirrhosis: An investigator-initiated, open-label, non-randomised, multicentre, phase 1/2a study.

ABSTRACT:

Background

We conducted an exploratory study to assess the safety tolerability, and anti-fibrotic effects of PRI-724, a CBP/β-catenin inhibitor, in patients with hepatitis C virus (HCV)- and hepatitis B virus (HBV)-induced cirrhosis.

Methods

This multicentre, open-label, non-randomised, non-placebo-controlled phase 1/2a trial was conducted at three hospitals in Japan. Between July 27, 2018, and July 13, 2021, we enrolled patients with HCV- and HBV-induced cirrhosis classified as Child-Pugh (CP) class A or B. In phase 1, 15 patients received intravenous infusions of PRI-724 at escalating doses of 140, 280, and 380 mg/m²/4 h twice weekly for 12 weeks. In phase 2a, 12 patients received the recommended PRI-724 dose. The primary endpoints of phases 1 and 2a were the frequency and severity of adverse events and efficacy in treating cirrhosis based on liver biopsy. This study was registered at ClinicalTrials.gov (no. NCT03620474).

Findings

Three patients from phase 1 who received the recommended PRI-724 dose were evaluated to obtain efficacy and safety data in phase 2a. Serious adverse events occurred in three patients, one of which was possibly related to PRI-724. The most common adverse events were diarrhoea and nausea. PRI-724 did not decrease hepatic fibrosis with any statistical significance, either by ordinal scoring or measurement of collagen proportionate area at 12 weeks; however, we observed statistically significant improvements in liver stiffness, Model for End-stage Liver Disease score, and serum albumin level.

Interpretation

Intravenous administration of 280 mg/m²/4 h PRI-724 over 12 weeks was preliminarily assessed to be well tolerated; however, further evaluation of anti-fibrotic effects in patients with cirrhosis is warranted.

Funding

AMED, Ohara Pharmaceutical.

SUBMITTER: Kimura K

PROVIDER: S-EPMC9126795 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Safety, tolerability, and anti-fibrotic efficacy of the CBP/β-catenin inhibitor PRI-724 in patients with hepatitis C and B virus-induced liver cirrhosis: An investigator-initiated, open-label, non-randomised, multicentre, phase 1/2a study.

Kimura Kiminori K Kanto Tatsuya T Shimoda Shinji S Harada Kenichi K Kimura Masamichi M Nishikawa Koji K Imamura Jun J Ogawa Eiichi E Saio Masanao M Ikura Yoshihiro Y Okusaka Takuji T Inoue Kazuaki K Ishikawa Tetsuya T Ieiri Ichiro I Kishimoto Junji J Todaka Koji K Kamisawa Terumi T

EBioMedicine 20220520

<h4>Background</h4>We conducted an exploratory study to assess the safety tolerability, and anti-fibrotic effects of PRI-724, a CBP/β-catenin inhibitor, in patients with hepatitis C virus (HCV)- and hepatitis B virus (HBV)-induced cirrhosis.<h4>Methods</h4>This multicentre, open-label, non-randomised, non-placebo-controlled phase 1/2a trial was conducted at three hospitals in Japan. Between July 27, 2018, and July 13, 2021, we enrolled patients with HCV- and HBV-induced cirrhosis classified as C ...[more]

PMID: 35605429

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Project description:BackgroundThere is currently no anti-fibrotic drug therapy available to treat hepatitis C virus (HCV) cirrhosis. The aim of this study was to assess the safety, tolerability, and anti-fibrotic effect of PRI-724, a small-molecule modulator of Wnt signaling, in patients with HCV cirrhosis.MethodsIn this single-center, open-label, phase 1 trial, we sequentially enrolled patients with HCV cirrhosis who were classified as Child-Pugh (CP) class A or B. PRI-724 was administered as a continuous intravenous infusion of 10, 40, or 160mg/m2/day for six cycles of 1week on and 1week off. The primary endpoints were frequency and severity of adverse events. The secondary endpoint was efficacy of PRI-724 in treating cirrhosis based on CP score and liver biopsy. This study is registered with ClinicalTrials.gov (no. NCT02195440).FindingsBetween Sept 3, 2014 and May 2, 2016, 14 patients were enrolled: CP class A:B, 6:8; median age, 62 (range: 43 to 74) years; male:female, 10:4. Twelve of the 14 patients completed six cycles of treatment; one was withdrawn from the study due to possible study drug-related liver injury (grade 3) in the 160mg/m2/day dose cohort and one withdrew for personal reasons. Serious adverse events occurred in three patients [21% (3/14)], one of which was possibly related to PRI-724. The most common adverse events were nausea [29% (4/14)] and fatigue [21% (3/14)]. After PRI-724 administration, the CP scores worsened by 1 point in two patients in the 10mg/m2/day cohort, improved in three patients at 1, 1, and 2 points in the 40mg/m2/day cohort, and improved in one patient by 3 points in the 160mg/m2/day cohort. The histology activity index scores of the liver tissue improved in two patients and exacerbated in two patients in the 10mg/m2/day cohort, and improved in one patient in the 40mg/m2/day cohort.InterpretationThis study showed that administration of 10 or 40mg/m2/day intravenous PRI-724 over 12weeks was well-tolerated by patients with HCV cirrhosis; however, liver injury as a possible related serious adverse event was observed in the 160mg/m2/day cohort.Funding sourceAMED.

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Dataset Information

Safety, tolerability, and anti-fibrotic efficacy of the CBP/β-catenin inhibitor PRI-724 in patients with hepatitis C and B virus-induced liver cirrhosis: An investigator-initiated, open-label, non-randomised, multicentre, phase 1/2a study.

Background

Methods

Findings

Interpretation

Funding

Publications

Safety, tolerability, and anti-fibrotic efficacy of the CBP/β-catenin inhibitor PRI-724 in patients with hepatitis C and B virus-induced liver cirrhosis: An investigator-initiated, open-label, non-randomised, multicentre, phase 1/2a study.

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