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8-K/A - FORM 8-K/A - SPECTRUM PHARMACEUTICALS INCd580534d8ka.htm

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Spectrum Pharmaceuticals, Inc.

Henderson, Nevada

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (333-185115, 333-150260, 333-142628, 333-135029, 333-125208, 333-121612, 333-115759, 333-110103, 333-108658, 333-105814, 333-102587, 333-64444, 333-64432, 333-60966, 333-51388, 333-42852, 333-38710, 333-37180, 333-92855, 333-73009, 333-52331 and 333-37585,) and in the Registration Statements on Form S-8 (Nos. 333-176681, 333-160312, 333-160705, 333-164014, 333-134566, 333-119833, 333-106427, 333-54246 and 333-30345) of Spectrum Pharmaceuticals, Inc. of our report dated April 1, 2013, relating to the financial statements of Talon Therapeutics, Inc. (the “Company”), which is incorporated by reference in this Form 8-K/A. Our report contains an explanatory paragraph regarding the Company’s ability to continue as a going concern.

BDO USA, LLP

San Jose, California

August 6, 2013