Foghorn Therapeutics Hit with Partial Clinical Hold
FDA has placed a partial clinical hold on a Foghorn Therapeutics clinical study of FHD-609 in synovial sarcoma and SMARCB1-deleted tumors after the company paused enrollment due to a Grade 4 QTc prolongation event in a synovial sarcoma patient who received the second highest dose. The partial hold allows patients currently enrolled and benefiting from therapy to continue dosing and to remain on FHD-609, the company says.
“Enrollment of the dose escalation portion of the study has been completed and a maximum tolerated dose has been identified,” Foghorn says. “Patients in the affected cohort were dose reduced and additional safety measures have been discussed with and provided to the study investigators… The company is not at this time planning to pursue a dose expansion study independently.”