CymaBay Stops Seladelpar Studies Over Safety Concerns
CymaBay Therapeutics has terminated a Phase 2b study of seladelpar in subjects with non-alcoholic steatohepatitis and its recently initiated Phase 2 study of seladelpar in subjects with primary sclerosing cholangitis due to safety concerns. In addition, the company is putting on hold all studies of seladelpar in subjects with primary biliary cholangitis.
“The decision to halt development of seladelpar was based on initial histological findings observed in the Phase 2b study of seladelpar in NASH," CymaBay says. “Planned, blinded histological assessments of the first tranche of liver biopsies in the trial revealed atypical histological findings, including histology characterized as an interface hepatitis presentation, with or without biliary injury.”
The company further says the findings were observed in patients who demonstrated on-study improvement or stabilization of their biochemical measures of inflammation and liver injury, and that no liver-related adverse events were reported after 52 weeks of treatment.