** Shares of drug developer Q32 Bio QTTB.O fall 65.3% to $8.46 premarket
** QTTB, late on Tuesday, said its experimental drug bempikibart failed to meet the main goal in a part of a mid-stage trial studying it in patients with atopic dermatitis
** The two-part trial was evaluating the drug in adults with atopic dermatitis, a condition that causes dry, itchy and inflamed skin
** Co plans to conduct a review to better understand the results
** Up to last close, stock has more than doubled YTD
(Reporting by Christy Santhosh)
((Christy.Santhosh@thomsonreuters.com))