Exhibit 99.1

JOINT FILING AGREEMENT

The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained herein and therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.

November 14, 2025

STEMPOINT CAPITAL LP

BY:	STEMPOINT CAPITAL MANAGEMENT GP LLC
	ITS GENERAL PARTNER

BY:	/S/ SEAN C. TAN
	NAME:	SEAN C. TAN
	TITLE:	AUTHORIZED SIGNATORY

STEMPOINT CAPITAL MANAGEMENT GP LLC

BY:	/S/ SEAN C. TAN
	NAME:	SEAN C. TAN
	TITLE:	AUTHORIZED SIGNATORY

MICHELLE ROSS
/S/ MICHELLE ROSS

Xilio Therapeutics, Inc. SCHEDULE 13G