Attached files

file filename
EXCEL - IDEA: XBRL DOCUMENT - Viracta Therapeutics, Inc.Financial_Report.xls
10-K - FORM 10-K - Viracta Therapeutics, Inc.d284831d10k.htm
EX-31.1 - CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 - Viracta Therapeutics, Inc.d284831dex311.htm
EX-31.2 - CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 - Viracta Therapeutics, Inc.d284831dex312.htm
EX-32.1 - CERTIFICATION OF THE CEO AND CFO PURSUANT TO SECTION 906 - Viracta Therapeutics, Inc.d284831dex321.htm
EX-10.56 - EXECUTIVE SEVERANCE BENEFITS AGREEMENT - Viracta Therapeutics, Inc.d284831dex1056.htm
EX-10.58 - FORMS OF RESTRICTED STOCK UNIT GRANT NOTICE AND RESTRICTED STOCK UNIT AGREEMENT - Viracta Therapeutics, Inc.d284831dex1058.htm
EX-10.57 - FORMS OF STOCK OPTION GRANT NOTICE AND OPTION AGREEMENT - Viracta Therapeutics, Inc.d284831dex1057.htm
EX-10.55 - OFFER LETTER - Viracta Therapeutics, Inc.d284831dex1055.htm

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements on Form S-3 (Nos. 333-164025, 333-166366 and 333-168191) and related Prospectuses, and the Registration Statements on Form S-8 (Nos. 333-128647, 333-132679, 333-138758, 333-145404, 333-150834, 333-160528 and 333-174732) pertaining to the 1998 Stock Plan, 2001 Stock Plan, 2005 Equity Incentive Award Plan, Amended and Restated 2006 Employment Commencement Incentive Plan, Employee Stock Purchase Plan, 2011 Equity Incentive Plan and 2011 Employee Stock Purchase Plan of Sunesis Pharmaceuticals, Inc., of our report dated March 14, 2012, 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, 2011.

/s/ Ernst & Young LLP

Redwood City, California

March 14, 2012