美股周二早盘，渤健（BIIB）下跌0.8%，该公司和卫材（OTCPK：ESALF）推出阿尔茨海默病药物Leqembi的皮下注射剂型Leqembi IQLIK。该维持剂量在完成18个月输液治疗后使用，并包含患者支持计划。FDA于八月批准该新剂型。

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