Exhibit 31.3
CERTIFICATION PURSUANT TO RULES 13a-14(a) UNDER THE SECURITIES
EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, Gail Farfel, certify that:
| 1. | I have reviewed this Amendment No. 1 to Annual Report on Form 10-K of ProMIS Neurosciences Inc.; |
| 2. | Based on my knowledge, this report does not contain any untrue statement of material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; |
| Date: April 27, 2023 | ||
| By: | /s/ Gail Farfel | |
| Name: Gail Farfel | ||
| Title: Chief Executive Officer | ||
| (Principal Executive Officer) | ||