Ex-Novartis CMO John Tsai joins Daiichi Sankyo Daiichi Sankyo has named John Tsai as its new chief medical officer, replacing Ken Takeshita, who is stepping down after five years in the role.

#DaiichiSankyo has named #JohnTsai as its new chief medical officer (#CMO), replacing Ken Takeshita, who is stepping down after five years in the role on 1st April.

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