Exhibit 1

JOINT FILING AGREEMENT

 The undersigned hereby agree that the Statement on Schedule 13D, dated November 3, 2022, with respect to the common stock, par value $0.0001 per share, of Keros Therapeutics, Inc. is filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. Each of the undersigned agrees to be responsible for the timely filing of this Statement, and for the completeness and accuracy of the information concerning itself contained therein. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

Dated: November 7, 2022	ORBIMED ADVISORS LLC
	By:	/s/ Carl L. Gordon
		Name: Carl L. Gordon
		Title: Member
	ORBIMED CAPITAL GP VII LLC
	By:	ORBIMED ADVISORS LLC, its managing member
	By:	/s/ Carl L. Gordon
		Name: Carl L. Gordon
		Title: Member of OrbiMed Advisors LLC
	ORBIMED GENESIS GP LLC
	By: / ORBIMED ADVISORS LLC, its managing member
	By:	/s/ Carl L. Gordon
		Name: Carl L. Gordon
		Title: Member of OrbiMed Advisors LLC
	ORBIMED CAPITAL LLC
	By:	/s/ Carl L. Gordon
		Name: Carl L. Gordon
		Title: Member