** Shares of drug developer Grace Therapeutics GRCE.O fall 50% to $2.12
** GRCE says the U.S. Food and Drug Administration declined to approve its drug for a rare type of stroke, citing deficiencies in chemistry, manufacturing and controls and non-clinical data
** The drug GTx-104 is for the treatment of aneurysmal subarachnoid hemorrhage, a critical, often fatal form of stroke caused by a ruptured brain aneurysm
** Co says it intends to request a meeting with the FDA to clarify the path forward and determine the appropriate next steps
** GRCE stock down 38% YTD
(Reporting by Padmanabhan Ananthan)
((Padmanabhan.Ananthan@thomsonreuters.com))