Exhibit A

AGREEMENT REGARDING THE JOINT FILING OF

SCHEDULE 13D

The undersigned being duly authorized thereunto, hereby execute this agreement as an exhibit to this Schedule 13D to evidence the agreement of the below-named parties in accordance with the rules promulgated pursuant to the Securities Exchange Act of 1934, as amended, to file this Schedule 13D (including amendments thereto) jointly on behalf of each such party.

Dated: August 4, 2021	Bain Capital Life Sciences Fund II, L.P.
	By:	Bain Capital Life Sciences Investors II, LLC,
		its general partner
	By:	Bain Capital Life Sciences Investors, LLC,
		its manager
	By:	/s/ Andrew Hack
		Name:	Andrew Hack
		Title:	Managing Director
	BCIP Life Sciences Associates, LP
	By:	Boylston Coinvestors, LLC,
		its general partner
	By:	/s/ Andrew Hack
		Name:	Andrew Hack
		Title:	Authorized Signatory
	BCLS II Investco, LP
	By:	BCLS II Investco (GP), LLC,
		its general partner
	By:	Bain Capital Life Sciences Fund II, L.P.,
		its managing member
	By:	Bain Capital Life Sciences Investors II, LLC,
		its general partner
	By:	Bain Capital Life Sciences Investors, LLC,
		its manager
	By:	/s/ Andrew Hack
		Name:	Andrew Hack
		Title:	Managing Director