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This study examines a gene therapy (ivlv-ADA) delivered with an improved lentiviral vector in patients with ADA-SCID (severe combined immunodeficiency due to adenosine deaminase deficiency). Eligible participants have a proven defect in the ADA gene and T-cell immune deficiency, severe infections and no prior allogeneic stem cell transplant. It is being conducted as a study without a formal phase and is currently recruiting participants.
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: * Diagnosis of classical ADA-SCID based on: * A proven defective adenosine deaminase (ADA) gene as defined by direct sequencing of patient DNA. * T-cell immune deficiency defined as one or more of the following: CD3+ autologous T cells \< 300/ul, or less than 50% of normal value for in vitro mitogen stimulation, or absent proliferation in vitro to antigens. * With severe infections, including but not limited to: pneumonitis; protracted diarrhea requiring total parenteral nutrition; infection with herpes viruses or adenovirus or fungus; disseminated BCG infection. * No cytogenetic abnormalities (medullary karyotype) and no detection of main rearrangements associated with acute leukemia of children. * No prior allogeneic stem cell transplantation. * Life expectancy ≥ 2 months. * Negative for HIV infection. * Written, informed consent obtained prior to any study-specific procedures. Exclusion Criteria: * None