** Shares of Synlogic SYBX.O fall 58.3% to $1.44 premarket
** Co said after markets closed on Thursday it will end a
late-stage study testing its lead drug candidate to treat
Phenylketonuria (PKU) after an internal review showed it was
unlikely to meet main study goal
** PKU is an inherited metabolic disorder that increases the
levels of a substance called phenylalanine in the blood,
potentially causing intellectual disability
** H.C. Wainwright analyst Ed Arce says the decision to end
the trial was "surprising"
** Brokerage downgrades SYBX rating to "sell" from "buy" and
removes PT on co; says stock is "set to be essentially a shell"
** SYBX plans to explore strategic options including an
acquisition, merger, sales of assets, or dissolution
** Co to reduce workforce by more than 90%, with majority of
impacted roles to end in February
** Up to last close, stock fell 74% in the last 12 months
(Reporting by Mariam Sunny in Bengaluru)
((Mariam.ESunny@thomsonreuters.com;))