** Shares of Avadel Pharmaceuticals AVDL.O rise 8.6% to
$14.90 in premarket trading
** Co reports Q4 rev of $19.45 mln, vs average analysts'
estimate of $18.2 mln, driven by strong uptake of its sleep
disorder drug -LSEG data
** The drug, Lumryz, is approved to treat excessive daytime
sleepiness in adults with narcolepsy
** Narcolepsy is a chronic neurological disorder that
affects the brain's ability to control sleep-wake cycles
** AVDL records net loss of $28.8 mln vs analysts' estimate
of a loss of $23.4 mln -LSEG data
** Co has cash, cash equivalents and marketable securities
were $105.1 million as of Dec. 31
** Up to last close, stock rose 45.2% in the past 12 months
(Reporting by Mariam Sunny in Bengaluru)
((Mariam.ESunny@thomsonreuters.com;))