FDA Places Mersana's Cancer Drug Trial on Hold Following Death

March 14, 2023

(Reuters) - Mersana Therapeutics Inc said on Monday the US drug regulator had placed on hold an early-stage trial testing its experimental cancer drug after the death of a participant.

The death was of a patient enrolled at the initial dose level in the dose escalation portion, the company said.

The study was testing the company's XMT-2056 candidate.

The company is now focused on analyzing the death and "consider potential next steps for development,” Chief Executive Officer Anna Protopapas said in a statement. 

The company will continue to make progress with the other cancer drug candidate UpRi and XMT-1660 clinical trials.

Shares of Mersana were halted before the bell.

(Reporting by Leroy Leo and Khushi Mandowara in Bengaluru; Editing by Sriraj Kalluvila)