Eisai shares tank after partner Biogen's Alzheimer's data disappoints

Reuters

July 22, 2015 at 9:18 PM

TOKYO (Reuters) - Shares in Japanese drug maker Eisai Co fell nearly 10 percent early on Thursday after news of disappointing data for partner Biogen Inc's experimental Alzheimer's drug. Eisai was down 7 percent at 8,228 yen at 0109 GMT, after falling to as low as 7975.0 yen. Its shares had jumped to a record high in March driven by promising results of Biogen's experimental drug. (Reporting by Ayai Tomisawa; Editing by Chang-Ran Kim)

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