NewslettersMammary Cell NewsMersana Therapeutics Announces FDA Fast Track Designation Granted to XMT-1660 for the Treatment of TNBCBy Danielle Corrigan - September 15, 20220101Mersana Therapeutics, Inc. announced that the US FDA has granted fast track designation to XMT-1660 for the treatment of adult patients with advanced or metastatic TNBC.[Mersana Therapeutics, Inc.]Press Release