StageZero Life Sciences Ltd. — Regulatory Filings 2021

Jan 12, 2021

Tel: 905 946 1066 BDO Canada LLP Fax: 905 946 9524 60 Columbia Way, Suite 300 www.bdo.ca Markham, ON L3R 0C9 Canada

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January 4, 2021

Alberta Securities Commission Ontario Securities Commission British Columbia Securities Commission

Dear Sirs/Mesdames:

Re: StageZero Life Sciences Ltd. – Change of Auditor

Pursuant to National Instrument 51-102 – Continuous Disclosure Obligations , we have reviewed the information contained in the Change of Auditor Notice of StageZero Life Sciences Ltd. dated December 31, 2020 (the “ Notice ”) and, based on knowledge of such information at this time, we agree with the statements made in the Notice except in regard to point 2 where we wish to state that our resignation was entirely at our own initiative.

Yours very truly,

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Chartered Professional Accountants, Licensed Public Accountants Toronto, Ontario

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