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This Phase 1/2 study evaluates the safety and preliminary efficacy of ASC618 in patients with hemophilia A. ASC618 is an AAV vector encoding a B-domain deleted, codon-optimized human factor VIII under a synthetic liver-directed promoter, developed because current replacement therapies have a short half-life and require frequent IV injections. Eligible participants are males aged 18 and older with severe or moderately severe hemophilia A (FVIII activity 2 IU/dL or below) who have had at least 150 exposure days of prior FVIII replacement therapy.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
Inclusion Criteria: * Male ≥18 years of age * Severe or moderately severe hemophilia A (FVIII activity ≤ 2 IU/dL) as evidenced by * medical history * Received FVIII prophylactic or on-demand replacement therapy for ≥ 150 accumulated * days (exposure days) * ≥12 bleeding episodes if receiving on-demand therapy over the preceding 12 months * BMI ≤ 30 * Agree to use double-barrier contraceptive until at least 3 consecutive semen samples are negative after ASC-618 infusion Exclusion Criteria: * Pre-existing immunity to AAV8 vector as defined by AAV8 total antibodies and neutralizing antibodies qualified tests. * Current inhibitors, or history of high titer FVIII inhibitors * Presence of \> Grade 2 liver fibrosis on elastography/Fibroscan or comparable imaging methodology * History of chronic renal disease * Active infection or any immunosuppressive disorder * History of cardiac surgery and need anticoagulant therapy * Any cardiovascular / genetic risk factors for thromboembolic disorders * Evidence of active Hepatitis B, Hepatitis C, Human Immunodeficiency Virus (HIV)-1/2 or syphilis infection. * Receipt of any vector or gene transfer agent * Current antiviral therapy for hepatitis B or C