Exhibit A

JOINT FILING AGREEMENT

The undersigned agree that this Schedule 13G Amendment No. 1 dated February 7, 2025 relating to the Common Stock, par value $0.0001 per share, of PepGen Inc. shall be filed on behalf of the undersigned.

SUVRETTA CAPITAL MANAGEMENT, LLC
By:	/s/ Aaron Cowen
Name:	Aaron Cowen
Title:	Authorized Signatory
AVERILL MASTER FUND, LTD.
By:	/s/ Aaron Cowen
Name:	Aaron Cowen
Title:	Director
AARON COWEN
By:	/s/ Aaron Cowen