** Shares of drug developer Athira Pharma ATHA.O fall
71.5% to 81 cents after the bell
** Co says its trial failed to meet main goal in patients
with mild-to-moderate Alzheimer's disease
** The experimental drug, fosgonimeton, failed to reach
statistical significance in a test that measures cognition and
other functions, compared to placebo at 26 weeks
** Alzheimer's disease is a brain condition that causes a
progressive decline in memory, thinking, learning and organizing
skills
** Stock up ~16% YTD
(Reporting by Sriparna Roy in Bengaluru)
((Sriparna.Roy@thomsonreuters.com;))