Joint Filing AgreementJoint Filing Agreement • April 23rd, 2019 • Biotechnology Value Fund L P • Investment advice
The undersigned hereby agree that the Statement on Schedule 13G dated April 23, 2019 with respect to the common stock, par value $0.001 per share of X4 Pharmaceuticals, Inc., and any further amendments thereto executed by each and any of the undersigned shall be filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended.
