title: Risks of gene therapy should be weighed against lack of alternatives for many diseases.
authors.forename: Robert E
authors.initials: RE
authors.lastname: MacLaren
authors.forename: Robin R
authors.initials: RR
authors.lastname: Ali
authors.forename: Adrian J
authors.initials: AJ
authors.lastname: Thrasher
mesh_terms: D015316:Genetic Therapy / Q000009:adverse effects*; D006801:Humans; D015458:Leukemia, T-Cell / Q000628:therapy; D018570:Risk Assessment; D012307:Risk Factors; D016511:Severe Combined Immunodeficiency / Q000628:therapy