SELLAS Life Sciences (SLS) 8-K 2014 FY Index to Consolidated Financial Statements

Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Galena Biopharma, Inc.

San Ramon, California

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-167025, 333-174076, 333-188847, 333-182505, 333-181589 and 333-188849), Form S-3MEF (No. 333-185526), and Form S-8 (No. 333-151154, 333-153847, 333-175763, 333-174819, 333-183300, 333-182578, and 333-190540) of Galena Biopharma, Inc. of our report dated March 12, 2013, relating to the consolidated financial statements, which appear in this Current Report on Form 8-K.

/s/ BDO USA, LLP

Seattle, Washington

December 4, 2015