** Shares of drug developer Editas Medicine EDIT.O rise as
much as 30.7% to over 2-month high of $11.58
** Stock set for its biggest one-day pct. rise in over 3
years if gains hold
** Co posts a narrower Q4 loss of 0.23/shr vs 0.88/shr a
year ago
** EDIT reports collaboration and other R&D revenue of $60
mln compared with $6.5 mln a year ago
** Co's cash, cash equivalents and marketable securities as
of Dec. 31 were $427.10 mln
** Stock up 22.1% in the last 12 months
(Reporting by Puyaan Singh)
((Puyaan.Singh@thomsonreuters.com;))