 CAMBRIDGE, Mass., March 10, 2021 GLOBE NEWSWIRE -- Mersana Therapeutics, Inc. NASDAQ:MRSN, a clinical-stage biopharmaceutical company focused on discovering and developing a pipeline of antibody-drug conjugates ADCs targeting cancers in areas of high unmet medical need, today announced that it will present data in three poster sessions at the upcoming Virtual 2021 American Association for Cancer Research Annual Meeting being held from April 9-14, 2021. 