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Press Release

Vical and Astellas Announce Topline Results from a Phase 2 Study of Investigational Cytomegalovirus (CMV) Vaccine (ASP0113) in Kidney Transplant Patients


Posted on: 19 Sep 16

SAN DIEGO and TOKYO, Sept. 19, 2016 (GLOBE NEWSWIRE) -- Vical Incorporated (Nasdaq:VICL) and Astellas Pharma Inc. (TOKYO:4503) today announced topline results from a randomized, double-blind, placebo-controlled Phase 2 study evaluating the safety and efficacy of cytomegalovirus (CMV) vaccine, ASP0113, versus placebo in kidney transplant patients receiving an organ from a CMV-seropositive donor. Results from the study demonstrated that the trial did not meet its primary endpoint, which was the proportion of patients having CMV viremia defined as a plasma viral load of ≥ 1000 IU/mL by central laboratory assay through one year after first injection of study drug. Additionally, the secondary endpoints of CMV-associated disease and CMV-specific antiviral therapy, which were evaluated by an independent, blinded Adjudication Committee, were similar in both treatment groups.

The safety profiles were generally similar between treatment groups. However, local injection site reactions were more common in the ASP0113 treatment group. Further detailed data from the trial is expected to be disclosed at an upcoming scientific congress.

"The unmet medical need in addressing CMV infection in transplant patients remains high. Although we had hoped for a different outcome, we look forward to further analyzing these data in hopes of contributing knowledge to the future development programs in this patient population,” said Bernhardt G. Zeiher, M.D., President, Development, Astellas. “In addition, we continue to focus on execution of our Phase 3 study in hematopoietic cell transplant (HCT) recipients and are pleased to announce that we have met our target enrollment.”

“We are pleased with our collaborative relationship with Astellas, and we look forward to the results from the pivotal Phase 3 study in HCT recipients, which we expect to obtain during the fourth quarter of 2017,” said Vijay Samant, President and Chief Executive Officer, Vical.

About the Study
The randomized, double-blind, placebo-controlled trial evaluated the safety and efficacy of ASP0113 in CMV-seronegative kidney transplant recipients receiving an organ from a CMV-seropositive donor (D+/R-). Enrollment included 150 kidney transplant recipients across approximately 80 centers in North America, Europe and Australia and randomized 1:1 to receive either ASP0113 or placebo, in addition to valganciclovir or ganciclovir prophylaxis for 100 days after kidney transplant.

About ASP0113
ASP0113 is a vaccine designed to prevent CMV disease and associated complications in SOT and HCT recipients. The bivalent DNA vaccine encodes CMV phosphoprotein 65 and glycoprotein B antigens for induction of both cellular and humoral immune responses, formulated with a proprietary poloxamer-based delivery system. ASP0113 was initially developed by Vical and is now in partnership with Astellas for further development and commercialization. ASP0113 has received Orphan Drug Designation in the United States and Europe for the prevention of CMV disease in SOT and HCT recipients. The ongoing Phase 3 trial of ASP0113 in HCT recipients represents the first time a CMV vaccine or a DNA vaccine has entered Phase 3 testing in a registrational trial.

About CMV
CMV is a herpes virus that infects more than half of all adults in the United States by age 50, and is even more widespread in developing countries. A healthy immune system typically protects an infected person against CMV disease, but does not prevent or clear latent infection. Individuals whose immune systems are not fully functional are at high risk of CMV reactivation, potentially leading to severe illness or death. Those at greatest risk include HCT and SOT recipients, as well as infants born to mothers who first become infected during pregnancy.

About Astellas
Astellas Pharma Inc., based in Tokyo, Japan, is a company dedicated to improving the health of people around the world through the provision of innovative and reliable pharmaceutical products. We focus on Urology, Oncology, Immunology, Nephrology and Neuroscience as prioritized therapeutic areas while advancing new therapeutic areas and discovery research leveraging new technologies/modalities. We are also creating new value by combining internal capabilities and external expertise in the medical/healthcare business. Astellas is on the forefront of healthcare change to turn innovative science into value for patients. For more information, please visit our website at www.astellas.com/en.

About Vical
Vical develops biopharmaceutical products for the prevention and treatment of chronic or life-threatening infectious diseases, based on its patented DNA delivery technologies and other therapeutic approaches. Additional information on Vical is available at www.vical.com.

Vical 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. Forward-looking statements include anticipated developments in collaborative programs, including the timing of data from the pivotal Phase 3 study of ASP0113 in HCT recipients. Risks and uncertainties include whether Vical or others will continue development of ASP0113; whether any product candidates will be shown to be safe and efficacious in clinical trials; whether Vical is able to continue its collaborative arrangements or enter into new ones; the timing of clinical trials; whether Vical or its collaborative partners will seek or gain approval to market any product candidates; 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.

Astellas Cautionary Notes
In this press release, statements made with respect to current plans, estimates, strategies and beliefs and other statements that are not historical facts are forward-looking statements about the future performance of Astellas. These statements are based on management’s current assumptions and beliefs in light of the information currently available to it and involve known and unknown risks and uncertainties. A number of factors could cause actual results to differ materially from those discussed in the forward-looking statements. Such factors include, but are not limited to: (i) changes in general economic conditions and in laws and regulations, relating to pharmaceutical markets, (ii) currency exchange rate fluctuations, (iii) delays in new product launches, (iv) the inability of Astellas to market existing and new products effectively, (v) the inability of Astellas to continue to effectively research and develop products accepted by customers in highly competitive markets, and (vi) infringements of Astellas’ intellectual property rights by third parties.

Information about pharmaceutical products (including products currently in development) which is included in this press release is not intended to constitute an advertisement or medical advice.

GlobeNewswire
globenewswire.com

Last updated on: 19/09/2016

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