No securities are beneficially owned.
This amendment to Form 3 is being filed to correctly report that the Reporting Person does not beneficially own any of the Issuer's securities held directly by venBio SPV III, LLC or venBio Global Strategic Fund III, L.P. Such shares were inadvertently included in the Form 3 filed by the Reporting Person on October 20, 2021 and the Form 4 filed by the Reporting Person on October 25, 2021.