** Shares of biotech SRZN.O jump as much as 21% to $2.99;
among top pct gainers across U.S. exchanges
** SRZN says it has dosed the first volunteer in its
early-stage trial for bowel disease treatment SZN-1326, starting
its first-ever human clinical trials about one quarter earlier
than planned urn:newsml:reuters.com:*:nGNX3KLzvq
** SZN-1326 is co's investigational treatment targeting
moderate-to-severe ulcerative colitis
** Stock has fallen ~62% YTD through last close
(Reporting by Ruhi Soni in Bengaluru)
((Ruhi.Soni@thomsonreuters.com
Twitter: https://twitter.com/ruhithere))