** Shares of drugmaker Neurocrine Biosciences NBIX.O fall
15.5% to $128.9 premarket
** Co says during a mid-stage trial, the lowest 20-milligram
dose of its schizophrenia drug NBI-1117568 achieved a 7.5 points
reduction in a scale used to measure the severity of symptoms,
compared with a placebo
** The lowest dose outperformed higher doses of the drug - a
result that prompted investor questions over whether or not the
data could be reproduced in larger trials
** The outperformance was "not something that is necessarily
typical in this class - and something that is likely to call
into question the replicability of the results in phase III
(trials)," said RBC Capital analyst Brian Abrahams
** Several analysts also compared the trial results to
Bristol Myers Squibb's BMY.N schizophrenia drug KarXT
** "Results underperform previous 11.6 point reduction seen
by KarXT" - BMO Capital Markets
** Up to last close, NBIX stock up 15.8% YTD
(Reporting by Christy Santhosh)
((Christy.Santhosh@thomsonreuters.com))