Exhibit A

JOINT FILING AGREEMENT

The undersigned agree that this Schedule 13G Amendment No. 1 dated February 14, 2025 relating to the Common Stock, par value $0.001 per share, of Champions Oncology, Inc. shall be filed on behalf of the undersigned.

TOCQUEVILLE ASSET MANAGEMENT L.P.

By: /s/ Kelsey Graham

Name: Kelsey Graham

Title:   Chief Compliance Officer

TAUBENPOST CAPITAL L.P.

By Taubenpost Capital LLC, its General Partner

By: /s/ Donald Wang

Name: Donald Wang

Title:   Managing Member

TAUBENPOST CAPITAL LLC

By: /s/ Donald Wang

Name: Donald Wang

Title:   Managing Member

DONALD WANG

By: /s/ Donald Wang