Upon reexamination, the European Medicines Agency has made a U-turn on Eisai and Biogen’s Alzheimer’s disease drug Leqembi. | Upon reexamination, the EMA has made a U-turn on Eisai and Biogen’s Alzheimer’s disease drug Leqembi.

The European Union's drugs regulator on Thursday recommended approval for Eisai and Biogen's Leqembi in some patients with early Alzheimer's disease, nearly four months after it first rejected the treatment.

Biogen’s stock rose 1% Thursday, after Europe’s pharmaceutical regulator issued a positive opinion on the Alzheimer’s disease drug that the company developed with Japanese partner Eisai — reversing an earlier decision not to approve the drug.