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Bexotegrast at 320 mg was well tolerated up to 40 weeks of treatment with
no treatment-related severe or serious adverse events
320 mg cohort demonstrated improvement in liver stiffness by transient elastography
at Week 24 compared to placebo
Statistically significant improvement in alkaline phosphatase (ALP) levels
over 24 weeks compared to placebo
Continued improvement in hepatocyte function and bile flow by contrast
MRI imaging observed from Week 12 to Week 24
FDA guidance provided clarity on next steps of PSC development program
SOUTH SAN FRANCISCO, Calif., July 15, 2024 (GLOBE NEWSWIRE) -- Pliant Therapeutics, Inc. (NASDAQ:PLRX) today announced positive 24-week data from the 320 mg cohort of INTEGRIS-PSC, a multinational, randomized, double-blind, placebo-controlled Phase 2a clinical trial of bexotegrast in patients with primary sclerosing cholangitis (PSC) and suspected moderate to severe liver fibrosis. The 320 mg treatment group met its primary endpoint of safety, demonstrating that bexotegrast was well tolerated up to 40 weeks of treatment. Pruritus and cholangitis occurred in lower proportions on bexotegrast than on placebo, consistent with previous findings.
The trial's exploratory efficacy endpoints assessed changes in liver stiffness as measured by transient elastography (TE) at 24 weeks, changes in the liver fibrosis markers including Enhanced Liver Fibrosis (ELF) score, as well as liver biochemistry and magnetic resonance imaging (MRI). Bexotegrast at 320 mg demonstrated improvement in liver stiffness compared to placebo at Week 24. A reduction in ELF score was observed at Week 24 in patients at higher risk of disease progression (baseline ELF > 9.8) compared to an increase in ELF on placebo. Stable ELF score was observed from Week 12 to Week 24 in the overall bexotegrast-treated population compared to placebo. Bexotegrast improved markers and symptoms of cholestasis including alkaline phosphatase (ALP), MRI, self-reported itch, and common adverse events associated with PSC. Bexotegrast-treated patients showed decreased ALP levels over 24 weeks, compared to increased ALP on placebo. MRI of the liver demonstrated evidence of further improvement of hepatocyte function and bile flow with bexotegrast at the 320 mg dose from Week 12 to 24.
Posted In: PLRX