StageZero Life Sciences Ltd. — Regulatory Filings 2020

Jun 23, 2020

BDO Canada s.r.l./S.E.N.C.R.L./LLP 1000 De La Gauchetière Street West Suite 200 Montréal, Québec H3B 4W5

Tel: 514-931-0841 Fax: 514-931-9491 www.bdo.ca

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June 22, 2020

British Columbia Securities Commission Alberta Securities Commission Ontario Securities Commission

Dear Sirs / Mesdames:

Re: StageZero Life Sciences Ltd. (the “Company”)

We refer to the short form prospectus of StageZero Life Sciences Ltd. dated June 22, 2020 relating to the sale and issue of Units (the Prospectus”).

We consent to being named and to the use, through incorporation by reference in the above-mentioned Prospectus, of our report dated May 19, 2020 to the shareholders of the Company on the following consolidated financial statements:

• consolidated statement of financial position as at December 31, 2019;

• consolidated statements of loss and comprehensive loss, changes in shareholders’ deficiency, and cash flows for the year ended December 31, 2019, and a summary of significant accounting policies and other explanatory information, and;

We report that we have read the Prospectus and all information specifically incorporated by reference therein and have no reason to believe that there are any misrepresentations in the information contained therein that are derived from the consolidated financial statements upon which we have reported or that are within our knowledge as a result of our audit of such financial statements. We have complied with Canadian generally accepted standards for an auditor's consent to the use of a report of the auditor included in an offering document, which does not constitute an audit or review of the Prospectus as these terms are described in the CPA Canada Handbook – Assurance.

Yours truly,

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Chartered Professional Accountants

BDO Canada LLP, a Canadian limited liability partnership, is a member of BDO International Limited, a UK company limited by guarantee, and forms part of the international BDO network of independent member firms.