MRSN

Mersana Therapeutics, Inc.

A biopharmaceutical company that develops antibody-drug conjugates — precision cancer medicines that hitch a chemotherapy payload to an antibody so it targets tumor cells directly. Founded in 2007 in Cambridge, Massachusetts, Mersana built its own drug-making platforms to design these targeted therapies for hard-to-treat cancers. The company's name blends "merging" science and therapy, reflecting its mission of combining biology and chemistry in one molecule.