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Study Results Presented at International Transfusion Congress Highlight Cerus' Progress Toward Improving the Safety of Platelets, Plasma and Red Blood Cells

06/30/2010

Data Supports Efficacy, Safety, Quality and Feasibility of INTERCEPT Pathogen Inactivation Process

CONCORD, Calif.--(BUSINESS WIRE)-- Cerus Corporation (NASDAQ:CERS) announced results of 22 abstracts presenting experiences with the INTERCEPT Blood System for platelets, plasma and red blood cells during the XXXIst International Congress of the International Society for Blood Transfusion in Berlin, Germany held from June 26 to July 1. Studies included data collected in Spain, France, Germany, Italy, Belgium, Sweden, Luxembourg and Scotland, covering a broad range of topics from in vitro results of routine validations to therapeutic efficacy of treated platelets.

"These studies underscore the growing use of INTERCEPT pathogen inactivation by blood centers in many European countries, and reflect our consistent experience that the platelet and plasma treatment processes are rapidly and successfully integrated into routine production," said Dr. Laurence Corash, Cerus' chief medical officer. "The INTERCEPT red blood cell study published in collaboration with German Red Cross researchers demonstrates our progress toward designing a treatment process that can complement our platelet and plasma products and maintain a similar user experience for pathogen inactivation of red blood cells in the future."

Key presentations of interest include:

    --  A Multi-Center Study of Therapeutic Efficacy and Safety of Platelet
        Components Prepared with Pathogen Inactivation (INTERCEPT) Stored for 6
        or 7 Days Prior to Transfusion, by M Lozano, N Knutson, R Tardivel et
        al: INTERCEPT-treated platelet components were found to be effective for
        patient support following extended storage of up to seven days in a
        clinical study conducted at medical centers in Spain, the United
        Kingdom, Sweden and France. The purpose of the 201-patient study was to
        provide additional information for clinicians regarding extended storage
        of INTERCEPT platelets, which are approved for storage of up to seven
        days in accordance with CE marking, but have been more extensively
        characterized in studies storing platelets only up to five days. Cerus
        announced preliminary results of this study in January.
    --  INTERCEPT for Pathogen Inactivation (PI) in Platelet Concentrates (PC)
        Effectively Prevents Transfusion-Associated Graft-Versus-Host Disease
        (TA-GVHD), by JC Osselaer, L Defoin, C Doyen et al.: The Blood
        Transfusion Center of Mont-Godinne, Belgium, presented their analysis of
        3645 platelet transfusions to 186 patients at risk of developing
        TA-GVHD. No cases were reported in an experience spanning over six years
        since the center's adoption of INTERCEPT in 2003, leading investigators
        to conclude that INTERCEPT provides a safe prophylaxis against TA-GVHD
        in patients undergoing stem cell transplantation.
    --  Routine Production of Apheresis Plasma Pathogen Inactivated Using the
        INTERCEPT Blood System: Preservation of Plasma Quality, by S Massard, C
        Civadier, A Sailliol et al: The French Army blood service detailed their
        production results for INTERCEPT plasma, concluding that the system has
        been integrated into routine production without the need for additional
        personnel or facilities, with final plasma quality consistently meeting
        local regulatory requirements. Similar validation results for INTERCEPT
        plasma were also presented by French national transfusion service
        centers in Centre Atlantique and Auverge Loire.
    --  Characterization of Red Cell Concentrates Treated with the S-303
        Pathogen Inactivation System and Stored in Saline Adenine
        Glucose-Mannitol (SAGM) Solution, by R Henschler, K Janetzko, B Erterek
        et al.: German Red Cross and Cerus investigators announced in vitro
        results characterizing the quality of red blood cells treated with the
        INTERCEPT process. Results from the study demonstrated that the
        treatment process is feasible for blood center technicians and produces
        red blood cell units meeting European quality standards.

A full list of abstracts can be viewed at http://www.interceptbloodsystem.com/isbtdgti2010.html.

ABOUT CERUS

Cerus Corporation is a biomedical products company focused on commercializing the INTERCEPT Blood System to enhance blood safety. The INTERCEPT system is designed to reduce the risk of transfusion-transmitted diseases by inactivating a broad range of pathogens such as viruses, bacteria and parasites that may be present in donated blood. The nucleic acid targeting mechanism of action enables INTERCEPT treatment to inactivate both established transfusion threats, such as hepatitis B and C, HIV, West Nile virus and bacteria, as well as emerging pathogens such as influenza, malaria and dengue. Cerus currently markets and sells the INTERCEPT Blood System for both platelets and plasma in Europe, Russia, the Middle East and selected countries in other regions around the world. The INTERCEPT red blood cell system is in clinical development. See http://www.cerus.com for more information.

INTERCEPT and INTERCEPT Blood System are trademarks of Cerus Corporation.

    Source: Cerus Corporation