** Drug developer Clene Inc shares CLNN.O slides 55.3% to
$1.2 - biggest pct loser across US stock exchanges premarket
** CLNN says its experimental drug to treat patients with
amyotrophic lateral sclerosis (ALS) did not meet main goal in
mid-stage study
** The drug, when compared to placebo, did not show
statistically significant results on a rating scale adjusted for
mortality at 24 weeks
** While the drug also failed to meet secondary goals,
survival benefits of the drug remained consistent - CLNN
** ALS is a progressive neurological disorder which results
in weakening of muscles
** Up to Friday's close, stock lost ~32% YTD
(Reporting by Khushi Mandowara)
((Khushi.Mandowara@thomsonreuters.com;))