Live feed16:02:00·1411dPRReleasevia QuantisnowMersana Therapeutics Announces Option Agreement with GSK for the Co-Development and Commercialization of XMT-2056, an Immunosynthen ADC Targeting HER2ByQuantisnow·Wall Street's wire, on your screen.GSK· GSK plcMRSN· Mersana Therapeutics Inc.Health Care