Pediatrics Genetics And Genetic Disorders 4aca470c Gene therapy is most commonly targeted against: A SCID B cancer C cystic fibrosis D Leukemia High-Yield Explanation a. SCID(Ref: Nelson's 20/e p 584-586)FDA-approved gene therapy is used for ADA-SCID, Leber's congenital amaurosis, multiple myeloma & Adrenoleukodystrophy