** Drug developer's shares PSTI.O up 4.2 pct at $1.25
premarket on FDA nod to start phase 3 study of muscle treatment
** Stock among top pct gainers across U.S. exchanges before
the bell
** Company receives FDA clearance for its late-stage study
of PLX-PAD cell therapy to treat muscle injury following hip
fracture surgery urn:newsml:reuters.com:*:nGNXspqnQ
** Company to begin patient enrollment in U.S. and Europe
this year
** As of Tuesday's close, shares down 13 pct YTD
(Reporting by Amy Caren Daniel in Bengaluru)
((Reuters Messaging:
Amy.CarenDaniel.thomsonreuters.com@reuters.net))