Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We hereby consent to the incorporation by reference in this Amendment No. 1 to Registration Statement on Form S-3 of our report dated March 7, 2016 relating to the financial statements, which appears in CytomX Therapeutics, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2015. We also consent to the reference to us under the heading “Experts” in such Registration Statement.
/s/ PricewaterhouseCoopers LLP
San Jose, California
November 23, 2016
