Global Epidemiologic Study of Preexisting Immunity to AAV in Adults With Severe Hemophilia

A Global Epidemiologic Study to Determine the Prevalence of Neutralizing Antibodies and Related Adaptive Immune Responses to Adeno-Associated Virus (AAV) in Adults With Hemophilia

Assess the seroprevalence of neutralizing antibodies (NAb) to AAV in adults with severe hemophilia A (coagulation factor VIII [FVIII] <1%) or moderately severe to severe hemophilia B (coagulation factor IX [FIX] ?2%).

Global Epidemiologic Study of Preexisting Immunity to AAV in Adults With Severe Hemophilia

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