** Shares of drug developer KNSA.O down ~14% at $10.77
premarket, set to open at their lowest in nearly two months
** Late-stage study of co's drug candidate, Mavrilimumab,
for treating COVID-19-related acute respiratory syndrome, did
not achieve the main goal urn:newsml:reuters.com:*:nGNX9pmy7M
** The global study on 582 patients did not meet the main
efficacy goal of proportion of patients alive and free of
mechanical ventilation at Day 29 - KNSA
** Up to Monday's close, stock fell 29.32% YTD
(Reporting by Oishee Majumdar in Bengaluru)
((oishee.majumdar@thomsonreuters.com;))