Exhibit 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that they are jointly filing this statement on Schedule 13D. Each of them is responsible for the timely filing of such statement and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

IN WITNESS WHEREOF, the undersigned hereby execute this Joint Filing Agreement as of October 29, 2025.

	ABG Management Ltd.

	By:	/s/ Fan Yu
	Name:	Fan Yu
	Title:	Director

	Ally Bridge Group (NY) LLC
	By: ABG Management Ltd., its managing member

	By:	/s/ Fan Yu
	Name:	Fan Yu
	Title:	Director

	Ally Bridge MedAlpha Master Fund L.P.
	By: Ally Bridge Group (NY) LLC, its manager
	By: ABG Management Ltd., its managing member

	By:	/s/ Fan Yu
	Name:	Fan Yu
	Title:	Director

	Fan Yu
	/s/ Fan Yu

ProMIS Neurosciences Inc. SCHEDULE 13D