Title: Vical Reports Second Quarter 2007 Financial Results, Allowance of Pandemic Influenza IND and Other Advances in Product Development Programs

Date: 8/7/2007 6:30:00 AM

SAN DIEGO, Aug. 7 /PRNewswire-FirstCall/ -- Vical Incorporated (Nasdaq: VICL) today reported financial results for the quarter ended June 30, 2007. Revenues for the second quarter of 2007 were $3.1 million, compared with revenues of $7.3 million for the second quarter of 2006. The net loss for the second quarter of 2007 was $8.2 million, or $0.21 per share, compared with a net loss of $3.2 million, or $0.11 per share, for the second quarter of 2006. The increase in net loss reflected a proactive reduction of contract manufacturing activity and higher spending for advancement of the company's independent development programs.

Based on anticipated activities for the remainder of 2007, including acceleration of the company's pandemic influenza vaccine program, the company is revising its projection to a full-year net loss of between $32 million and $37 million and a net cash burn for the full year, excluding equity investments, of $27 million to $32 million. Vical had cash and investments of $82 million at June 30, 2007.

    Pandemic Influenza IND Allowed

    -- Vical has received notification of Investigational New Drug (IND)
       allowance for its Phase 1 trial of the company's
       Vaxfectin(TM)-formulated pandemic influenza DNA vaccine, and now
       expects to initiate the trial earlier than originally planned during
       the second half of 2007.

    Other Advances in Product Development Programs

    -- The company's licensee, AnGes MG, Inc. (AnGes), reported positive
       results following an interim efficacy evaluation in its Japanese Phase
       3 angiogenesis trial of its gene-based Hepatocyte Growth Factor (HGF)
       product candidate in patients with advanced peripheral arterial disease
       (PAD). Based on the recommendation of an Independent Data Monitoring
       Committee, AnGes ended the trial early and is preparing an application
       for Japanese marketing approval.

    -- Vical announced in July the enrollment of the 20th hematopoietic stem
       cell transplant recipient in the company's Phase 2 trial of a DNA
       vaccine against cytomegalovirus (CMV). After the 20th recipient's
       two-month follow-up visit, an independent data safety monitoring board
       will conduct an interim evaluation of safety data for all subjects
       enrolled in the trial.

    -- The company has initiated 30 of up to 60 planned clinical sites for the
       AIMM (Allovectin-7(R) Immunotherapeutic for Metastatic Melanoma) Phase
       3 pivotal trial of the Allovectin-7(R) cancer immunotherapeutic as
       first-line therapy in chemotherapy-naïve patients with recurrent Stage
       III or IV metastatic melanoma. The trial is being funded by AnGes under
       a collaborative agreement with Vical.

    -- During the second quarter, the company completed the final contract
       manufacturing and shipment of HIV vaccine bulk DNA under a $12 million
       production order for the National Institutes of Health (NIH) for a
       planned Phase 2b efficacy proof-of-concept trial expected to begin this
       year with the support of the Partnership for AIDS Vaccine Evaluation
       (PAVE). The PAVE trial will test a vaccine regimen combining a DNA
       prime based on Vical's technology with an adenoviral vector boost in up
       to 8,500 volunteers at sites in the United States, Africa, the
       Caribbean and South America to determine its potential to prevent
       infection or disease progression.

    -- Vical was awarded a three-year, $6.0 million grant from the National
       Institute of Allergy and Infectious Diseases (NIAID), part of the NIH,
       for further development of a DNA vaccine manufacturing process with the
       potential to produce several million doses of vaccines in a matter of
       days. By using a cell-free manufacturing process, the company believes
       that the RapidResponse(TM) DNA platform can overcome the time, capacity
       and cost challenges of manufacturing conventional vaccines for diseases
       such as influenza, which use killed or disabled viruses grown in
       chicken eggs or via cell culture, requiring months of production time
       in large, dedicated facilities.


    Conference Call

Vical will conduct a conference call and webcast to discuss the financial results and program updates with invited analysts and institutional investors today, August 7, at noon Eastern Time. The call and webcast are open on a listen-only basis to any interested parties. To listen to the conference call, dial (888) 224-3260, or (913) 905-1086 for international participants, and reference confirmation code 3989047. A replay of the call will be available for 48 hours beginning about two hours after the call. To listen to the replay, dial (888) 203-1112, or (719) 457-0820 for international participants, and enter replay passcode 3989047. The call also will be available live and archived through the events page at http://www.vical.com. For further information, contact Vical's Investor Relations department by phone at (858) 646-1127 or by e-mail at info@vical.com.

About Vical

Vical researches and develops biopharmaceutical products based on its patented DNA delivery technologies for the prevention and treatment of serious or life-threatening diseases. Potential applications of the company's DNA delivery technology include DNA vaccines for infectious diseases or cancer, in which the expressed protein is an immunogen; cancer immunotherapeutics, in which the expressed protein is an immune system stimulant; and cardiovascular therapies, in which the expressed protein is an angiogenic growth factor. The company is developing certain infectious disease vaccines and cancer therapeutics internally. In addition, the company collaborates with major pharmaceutical companies and biotechnology companies that give it access to complementary technologies or greater resources. These strategic partnerships provide the company with mutually beneficial opportunities to expand its product pipeline and address significant unmet medical needs. Additional information on Vical is available at http://www.vical.com.

Forward-Looking Statements

This press release contains forward-looking statements subject to risks and uncertainties that could cause actual results to differ materially from those projected, including: whether Vical or others will continue development of the company's pandemic influenza or CMV vaccine candidates, the HGF product candidate, Allovectin-7(R), the HIV vaccine candidate, the RapidResponse(TM) DNA vaccine platform, the company's Vaxfectin(TM) adjuvant, or any other product candidates being developed by Vical, its collaborators or licensees; whether Vical will begin human testing of its pandemic influenza vaccine as anticipated in the second half of 2007, if at all; whether AnGes will file for marketing approval in Japan; whether the HGF product candidate will be approved in Japan; whether the market for the HGF product will be significant; whether the CMV vaccine will achieve the safety and efficacy endpoints in the Phase 2 trial for stem cell transplant donors and recipients; whether Vical will be able to recruit patients into the AIMM trial as planned, if at all; whether the results from animal trials can be duplicated in human trials; whether the Phase 2b HIV vaccine trial will begin this year, if at all; whether the RapidResponse(TM) platform will produce several million doses of vaccines in a matter of days and overcome the time, capacity and cost challenges of manufacturing conventional vaccines; whether the company will receive all, if any, of the RapidResponse(TM) grant funding; whether the company's pandemic influenza or CMV vaccine candidates, the HGF product candidate, Allovectin-7(R), the HIV vaccine candidate, the RapidResponse(TM) DNA vaccine platform, the company's Vaxfectin(TM) adjuvant, or any other product candidates being developed by Vical, its collaborators or licensees will be shown to be safe and effective in clinical trials; the timing, nature and cost of clinical trials; whether the company will achieve levels of revenues and control expenses to meet projected financial performance; and additional risks set forth in the company's filings with the Securities and Exchange Commission. These forward-looking statements represent the company's judgment as of the date of this release. The company disclaims, however, any intent or obligation to update these forward-looking statements.

                                VICAL INCORPORATED
               Selected Condensed Financial Information (Unaudited)

    Statements of Operations         Three Months Ended     Six Months Ended
     (in thousands, except per            June 30,               June 30,
      share amounts)                  2007       2006        2007       2006

    Revenues:
      Contract and grant revenue     $2,980     $7,100      $3,830    $12,679
      License and royalty revenue       131        156         536        192
    Total revenues                    3,111      7,256       4,366     12,871
    Operating expenses:
      Research and development        5,859      4,171      11,734      8,815
      Manufacturing and
       production                     4,216      4,499       8,163      8,051
      General and administrative      2,340      2,406       4,633      4,848
    Total operating expenses         12,415     11,076      24,530     21,714
      Loss from operations           (9,304)    (3,820)    (20,164)    (8,843)
      Net investment income           1,107        576       2,370      1,126
    Net loss                        $(8,197)   $(3,244)   $(17,794)   $(7,717)
    Basic and diluted
     net loss per share              $(0.21)    $(0.11)     $(0.45)    $(0.27)
    Shares used to calculate
     basic and diluted net
     loss per share                  39,191     28,817      39,186     28,555



    Balance Sheets                                  June 30,      December 31,
    (in thousands)                                    2007            2006
    Assets:
      Cash, cash equivalents, and
       marketable securities                        $82,153          $100,393
      Other current assets                            4,340             5,049
        Total current assets                         86,493           105,442
      Property and equipment, net                    13,031            13,500
      Other assets                                    5,899             6,307
    Total assets                                   $105,423          $125,249

    Liabilities and stockholders' equity:
      Current liabilities                            $5,500            $8,153
      Long-term obligations                           2,735             2,973
      Stockholders' equity                           97,188           114,123
    Total liabilities and stockholders' equity     $105,423          $125,249



    Contacts:  Alan R. Engbring                        Jill M. Church
               Executive Director,                     Vice President and
               Investor Relations                      Chief Financial Officer
               (858) 646-1127
               Website:  http://www.vical.com
SOURCE  Vical
    -0-                             08/07/2007
    /CONTACT:  Alan R. Engbring, Executive Director, Investor Relations, or
Jill M. Church, Vice President and Chief Financial Officer, both of Vical,
+1-858-646-1127/
    /Web site:  http://www.vical.com /
    (VICL)

CO:  Vical
ST:  California
IN:  HEA MTC
SU:  ERN ERP CCA TRI

JA-AE
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1801 08/07/2007 06:30 EDT http://www.prnewswire.com