| Sunesis Pharmaceuticals Reports Third Quarter 2005 Financial Results 
 SOUTH SAN FRANCISCO, Calif., Nov. 14 /PRNewswire-FirstCall/ -- Sunesis
 Pharmaceuticals, Inc. (Nasdaq: SNSS), a clinical-stage biopharmaceutical
 company focused on the discovery, development and commercialization of novel
 small molecule therapeutics, today reported financial results for the quarter
 ended September 30, 2005.  Revenue for the third quarter was $3.3 million,
 with a net loss of $5.6 million.  As of September 30, 2005, cash, cash
 equivalents and marketable securities totaled $55.0 million and debt totaled
 $2.5 million.
 
 Quarter Highlights
 
 * The company completed enrollment of the first Phase I clinical trial of
 SNS-595, Sunesis' lead novel cytotoxic anticancer drug.  The trial is
 an open-label, multi-center, dose-escalation study designed to examine
 the safety, tolerability and pharmacokinetics of SNS-595.  The results
 of this trial will be presented at the upcoming European Organization
 for Research and Treatment of Cancer ("EORTC") conference on November
 17, 2005.
 
 * On August 29, 2005, Sunesis announced the selection of SNS-314 as the
 lead development candidate from the company's internal efforts to
 discover novel Aurora kinase inhibitors.  SNS-314 has shown promising
 activity and pharmaceutical properties in animal models.  Sunesis plans
 to file an Investigational New Drug (IND) application for this compound
 in 2006.
 
 * On September 30, 2005, the company completed an initial public offering
 ("IPO") of common stock with gross proceeds of $42.0 million.
 
 Financial Highlights
 
 * Revenue from research collaborations totaled $3.3 million and $11.9
 million for the three-month and nine-month periods ended September 30,
 2005, respectively, compared to $2.8 million and $6.3 million for the
 three-month and nine-month periods ended September 30, 2004,
 respectively.  This increase in revenue is primarily due to the signing
 of the kinase collaboration with Biogen Idec in August 2004.
 
 * Research and development (R&D) expense was $6.9 million and $28.3
 million for the three-month and nine-month periods ended September 30,
 2005, respectively.  R&D expense for the three-month and nine-month
 periods ended September 30, 2004, was $5.6 million and $17.5 million,
 respectively.  The $10.8 million increase in R&D expenses between the
 nine-month periods ended September 30, 2004 and September 30, 2005 is
 primarily due to an $8.9 million expense related to the in-licensing of
 SNS-032 and related intellectual property from Bristol-Myers Squibb in
 April 2005, of which $8.0 million represents a non-cash licensing fee,
 and a $2.8 million increase in expense related to the development of
 SNS-314, our Aurora kinase inhibitor.
 
 * General and administrative (G&A) expense for the third quarter was $2.1
 million, compared to $1.8 million for the prior year.  For the nine-
 month period ended September 30, 2005, these expenses were $6.1
 million, compared to $5.5 million for the nine-month period ended
 September 30, 2004.  The increase is G&A expense is primarily due to an
 increase in non-cash stock compensation expense.
 
 * Sunesis reported a net loss of $5.6 million for the third quarter and
 $22.2 million for the nine-month period ended September 30, 2005,
 compared to a reported loss of $4.5 million and $16.5 million,
 respectively, for the three-month and nine-month periods ended
 September 30, 2004.  The loss applicable to common shareholders was
 $93.7 million for the third quarter, including a $88.1 million non-cash
 deemed dividend related to the conversion of preferred stock into
 common stock in conjunction with the IPO.  This non-cash deemed
 dividend results from the redistribution of pre-IPO ownership which
 occurred in conjunction with the company's IPO.
 
 Company Milestones
 Sunesis anticipates the following milestones in its development programs
 to occur over the next four months:
 
 * Report results from a Phase I clinical trial of SNS-595 in patients
 with advanced solid tumors at the EORTC conference on November 17.
 
 * Initiate a multi-center open-label Phase I clinical trial of SNS-595 in
 patients with acute leukemias.
 
 * Initiate a multi-center, open-label Phase II second-line clinical trial
 of SNS-595 in patients with non-small cell lung cancer.
 
 * Initiate a multi-center, open-label Phase II second-line clinical trial
 of SNS-595 in patients with small cell lung cancer.
 
 * Initiate a multi-center, open-label Phase I/II clinical trial of SNS-
 032, our inhibitor of CDK 2, 7 and 9, in patients with advanced solid
 tumors.
 
 Conference Call Information
 Sunesis' management will host a conference call to review the results of
 the quarter on Monday, November 14 at 1:30 pm PST.  Individual and
 institutional investors can access the call via (800) 310-6649 (domestic) or
 (719) 457-2693 (international).  To access the live audio broadcast or the
 subsequent archived recording, visit the "Investors and Media - Calendar of
 Events" section of the Sunesis website at sunesis.com.  Please log
 on to Sunesis' website several minutes prior to the start of the presentation
 to ensure adequate time for any software download that may be necessary.
 
 About Sunesis Pharmaceuticals
 Sunesis is a clinical-stage biopharmaceutical company focused on the
 discovery, development and commercialization of novel small molecule
 therapeutics for oncology and other serious diseases.  Sunesis has built a
 broad product candidate portfolio through internal discovery and in-licensing
 of novel cancer therapeutics.  Sunesis is advancing its product candidates
 through in-house research and development efforts and strategic collaborations
 with leading pharmaceutical and biopharmaceutical companies.  For additional
 information on Sunesis Pharmaceuticals, please visit sunesis.com.
 
 Safe Harbor Statement
 This press release contains forward-looking statements that involve
 substantial risks and uncertainties. Sunesis may not actually achieve the
 plans, intentions or expectations contained in such forward-looking
 statements. Actual results or events could differ materially from the plans,
 intentions and expectations contained in such forward-looking statements.
 Sunesis does not assume any obligation to update any such forward-looking
 statements.
 
 
 Sunesis Pharmaceuticals, Inc
 Statements of Operations
 
 Three months ended           Nine months ended
 September 30,               September 30,
 2005         2004           2005         2004
 (unaudited)                 (unaudited)
 Revenue:
 Collaboration
 revenue           $1,685,537   $1,574,669     $5,028,923    $4,302,942
 Collaboration
 revenue from
 related party      1,637,499    1,205,657      6,880,943     1,991,731
 Grant and
 fellowship
 revenue               21,942       38,914         89,347       135,505
 Total revenues        3,344,978    2,819,240     11,999,213     6,430,178
 
 Operating expenses:
 Research and
 development       6,870,942    5,604,924     28,263,850    17,504,300
 General and
 administrative    2,067,215    1,779,898      6,056,145     5,477,888
 Total operating
 expenses             8,938,157    7,384,822     34,319,995    22,982,188
 
 Loss from operations (5,593,179)  (4,565,582)   (22,320,782)  (16,552,010)
 
 Interest income         178,515      111,400        574,204       316,102
 Interest expense       (229,450)     (88,755)      (445,975)     (299,494)
 Other income
 (expense), net           2,094          726          8,300           733
 Net loss             (5,642,020)  (4,542,211)   (22,184,253)  (16,534,669)
 Convertible
 preferred stock
 dividends          (88,092,302)           -    (88,092,302)            -
 Loss applicable to
 common
 stockholders      $(93,734,322) $(4,542,211) $(110,276,555) $(16,534,669)
 
 Basic and diluted
 net loss per
 share applicable
 to common
 stockholders           $(45.12)      $(3.51)       $(67.58)      $(12.89)
 Shares used in
 computing basic
 and diluted loss
 per share
 applicable to
 common
 stockholders         2,077,245    1,294,835      1,631,700     1,283,179
 
 Sunesis Pharmaceuticals, Inc.
 Condensed Balance Sheet
 
 September 30,   December 31,
 2005          2004
 (Unaudited)
 Current assets:
 
 Cash and cash equivalents                    $45,212,955    $7,587,512
 Marketable securities                          9,777,438    29,224,509
 Other current assets                           1,803,917     1,839,259
 Total current assets                          56,794,310    38,651,280
 
 Note and interest receivable from officers
 and employees                                         -        85,350
 Property and equipment, net                    3,982,635     3,989,357
 Deposits and other assets                        300,000       300,000
 Total assets                                  61,076,945    43,025,987
 
 Current liabilities:
 Short-term liabilities                         9,642,547     9,653,051
 Current portion of equipment financing         1,138,076     1,291,363
 Total current liabilities                     10,780,623    10,944,414
 
 Other long term liabilities                    5,742,446     8,874,093
 Borrowings under debt facility with
 related party                                         -     3,200,000
 Non current portion of equipment financing     1,351,785     1,238,430
 
 Commitments
 Convertible preferred stock                            -   108,812,619
 
 Stockholders' equity (deficit):
 Common stock                                       2,146           139
 Additional paid-in capital and other         246,893,143     3,372,935
 Accumulated deficit                         (203,693,198)  (93,416,643)
 Total stockholders' equity (deficit)          43,202,091   (90,043,569)
 
 Total liabilities, convertible preferred
 stock and stockholders' equity(deficit)      61,076,945    43,025,987
 
 
 
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