Gossamer Bio announces FDA has placed a partial clinical hold on all trials of GB5121 in response to serious adverse events

On April 3, 2023, Gossamer Bio, Inc. (the “Company”) announced that the U.S. Food and Drug Administration (the “FDA”) has placed a partial clinical hold on all trials of GB5121, in response to serious adverse events that have been observed in the Phase 1b/2 STAR-CNS study, including atrial fibrillation, a sudden death event and a fatal intracranial hemorrhage.