** Shares of drug developer Nektar Therapeutics NKTR.O fall 6.8% to $50 premarket
** Co says its experimental drug for alopecia areata, rezpegaldesleukin, narrowly missed the main goal of achieving statistically significant reduction in severity in a mid-stage study
** Says both treatment arms met statistical significance on the main goal when excluding four patients with major study eligibility violations
** Alopecia areata is an autoimmune condition where the body's immune system attacks hair follicles, causing patchy hair loss on the scalp
** Co plans to move into late-stage development for the drug in 2026
** As of last close, stock has more than tripled YTD
(Reporting by Christy Santhosh and Kamal Choudhury)
((Christy.Santhosh@thomsonreuters.com))
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