Mersana falls as FDA puts cancer drug trial on hold
** Shares of drug developer Mersana Therapeutics Inc
MRSN.O fall 10.8% to $4.12 in premarket trading
** U.S. FDA has put on hold an early-stage trial testing
company's experimental cancer drug after the death of a
participant - MRSN
** The study was testing company's XMT-2056 candidate
** As of last close, stock up ~5.5% over the past 12 months
(Reporting by Mariam Sunny)
((Mariam.ESunny@thomsonreuters.com))