StageZero Life Sciences Ltd. — Regulatory Filings 2020

Jun 12, 2020

Tél. : 514 931 0841 Téléc. : 514 931 9491 www.bdo.ca

BDO Canada s.r.l./S.E.N.C.R.L./LLP 1000, rue De La Gauchetière Ouest Bureau 200 Montréal QC H3B 4W5 Canada

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June 12, 2020

To: Ontario Securities Commission British Columbia Securities Commission Alberta Securities Commission

Dear Sirs/Mesdames:

Re: StageZero Life Sciences Ltd.

We have read the statements made by StageZero Life Sciences Ltd. in the Notice of Change of Auditor dated June 9, 2020 (the “ Notice ”), which we understand will be filed pursuant to Section 4.11 of National Instrument 51-102.

Based on our knowledge of the information at this date, we agree with the statements concerning BDO Canada LLP contained in the Notice.

Yours truly,

BDO CANADA LLP

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c.c: StageZero Life Sciences Ltd.

BDO Canada s.r.l./S.E.N.C.R.L., une société canadienne à responsabilité limitée/société en nom collectif à responsabilité limitée, est membre de BDO International Limited, société de droit anglais, et fait partie du réseau international de sociétés membres indépendantes BDO.

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

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