Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the reference to our firm under the caption “Experts” in the Registration Statement(Form S-3) and related Prospectus of Aptevo Therapeutics Inc. for the registration of 6,000,000 shares of its common stock and to the incorporation by reference therein of our report dated March 13, 2018, with respect to the consolidated financial statements of Aptevo Therapeutics Inc. included in its Annual Report (Form10-K) for the year ended December 31, 2017, filed with the Securities and Exchange Commission.
/s/ Ernst & Young LLP |
Seattle, Washington
December 28, 2018
