Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in the following Registration Statements:
| (1) | Registration Statement (Form S-3 No. 333-168191) of Sunesis Pharmaceuticals, Inc., |
| (2) | Registration Statement (Form S-3 No. 333-187854) of Sunesis Pharmaceuticals, Inc., |
| (3) | Registration Statement (Form S-3 No. 333-194166) of Sunesis Pharmaceuticals, Inc., |
| (4) | Registration Statement (Form S-3 No. 333-195779) of Sunesis Pharmaceuticals, Inc., |
| (5) | Registration Statement (Form S-8 No. 333-128647) pertaining to the 1998 Stock Plan, the 2001 Stock Plan, the 2005 Equity Incentive Award Plan and the Employee Stock Purchase Plan of Sunesis Pharmaceuticals, Inc., |
| (6) | Registration Statement (Form S-8 No. 333-132679) pertaining to the 2006 Employment Commencement Incentive Plan of Sunesis Pharmaceuticals, Inc., |
| (7) | Registration Statement (Form S-8 No. 333-138758) pertaining to the 2001 Stock Plan, the 2005 Equity Incentive Award Plan and the Employee Stock Purchase Plan of Sunesis Pharmaceuticals, Inc., |
| (8) | Registration Statement (Form S-8 No. 333-145404) pertaining to the 2005 Equity Incentive Award Plan, the Amended and Restated 2006 Employment Commencement Incentive Plan and the Employee Stock Purchase Plan of Sunesis Pharmaceuticals, Inc., |
| (9) | Registration Statement (Form S-8 No. 333-150834) pertaining to the 2005 Equity Incentive Award Plan, the Amended and Restated 2006 Employment Commencement Incentive Plan and the Employee Stock Purchase Plan of Sunesis Pharmaceuticals, Inc., |
| (10) | Registration Statement (Form S-8 No. 333-160528) pertaining to the 2005 Equity Incentive Award Plan and the Amended and Restated 2006 Employment Commencement Incentive Plan of Sunesis Pharmaceuticals, Inc., |
| (11) | Registration Statement (Form S-8 No. 333-174732) pertaining to the 2011 Equity Incentive Plan and the 2011 Employee Stock Purchase Plan of Sunesis Pharmaceuticals, Inc., |
| (12) | Registration Statement (Form S-8 No. 333-180101) pertaining to the 2011 Equity Incentive Plan of Sunesis Pharmaceuticals, Inc., |
| (13) | Registration Statement (Form S-8 No. 333-187234) pertaining to the 2011 Equity Incentive Plan of Sunesis Pharmaceuticals, Inc., |
| (14) | Registration Statement (Form S-8 No. 333-195781) pertaining to the 2011 Equity Incentive Plan and the 2011 Employee Stock Purchase Plan of Sunesis Pharmaceuticals, Inc., |
| (15) | Registration Statement (Form S-8 No. 333-202696) pertaining to the 2011 Equity Incentive Plan and the 2011 Employee Stock Purchase Plan of Sunesis Pharmaceuticals, Inc., and |
| (16) | Registration Statement (Form S-8 No. 333-210183) pertaining to the 2011 Equity Incentive Plan of Sunesis Pharmaceuticals, Inc. |
of our report dated March 9, 2017, with respect to the consolidated financial statements of Sunesis Pharmaceuticals, Inc., included in this Annual Report (Form 10-K) for the year ended December 31, 2016.
/s/ ERNST & YOUNG LLP
Redwood City, California
March 9, 2017