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Kezar Life Sciences climbs after FDA lifts clinical hold on liver disease drug

ReutersJul 15, 2025 9:11 PM

Shares of drug developer Kezar Life Sciences KZR.O rise 4.3% to $4.82 in extended trading

The U.S. FDA has lifted a partial clinical hold on company's mid-stage trial of evaluating zetomipzomib for the treatment of autoimmune hepatitis, a rare chronic liver disease

Zetomipzomib is a first-in-class selective immunoproteasome inhibitor designed to reduce inflammation without suppressing the immune system

Kezar has shifted its focus to autoimmune hepatitis after suspending development of zetomipzomib in lupus nephritis — a condition that causes inflammation and damage in the kidneys due to a form of immune-related condition called lupus

Company also exploring options to lift a clinical hold on zetomipzomib in lupus nephritis, based on recommendations from an independent committee

Shares down 31% YTD

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