Mersana signs deal with Merck KGaA for cancer therapy development

Reuters

Published Dec 22, 2022 04:17PM ET

(Reuters) - Mersana Therapeutics (NASDAQ:MRSN) Inc said on Thursday it had signed a deal for developing cancer drugs with Germany's Merck KGaA that has the potential to generate up to $800 million in milestone payments.

Mersana would receive $30 million in an upfront payment, which would be used to develop drugs known as antibody-drug conjugates (ADCs), the company said.

ADCs combine a tumor-seeking monoclonal antibody with a cell-killing chemotherapy payload, designed for a targeted destructive effect that, unlike conventional chemotherapy, spares healthy cells.