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Genotype, phenotype, and outcomes of nine patients with T‐B+NK+ SCID
Author(s) -
Yu Grace P.,
Nadeau Kari C.,
Berk David R.,
de Saint Basile Geneviève,
Lambert Nathalie,
Knapnougel Perrine,
Roberts Joseph,
Kavanau Kristina,
Dunn Elizabeth,
Stiehm E. Richard,
Lewis David B.,
Umetsu Dale T.,
Puck Jennifer M.,
Cowan Morton J.
Publication year - 2011
Publication title -
pediatric transplantation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.457
H-Index - 69
eISSN - 1399-3046
pISSN - 1397-3142
DOI - 10.1111/j.1399-3046.2011.01563.x
Subject(s) - medicine , phenotype , genotype , immunology , genetics , gene , biology
Yu GP, Nadeau KC, Berk DR, de Saint Basile G, Lambert N, Knapnougel P, Roberts J, Kavanau K, Dunn E, Stiehm ER, Lewis DB, Umetsu DT, Puck JM, Cowan MJ. Genotype, phenotype, and outcomes of nine patients with T‐B+NK+ SCID.
Pediatr Transplantation 2011: 15: 733–741. © 2011 John Wiley & Sons A/S. Abstract: There are few reports of clinical presentation, genotype, and HCT outcomes for patients with T‐B+NK+ SCID. Between 1981 and 2007, eight of 84 patients with SCID who received and/or were followed after HCT at UCSF had the T‐B+NK+ phenotype. One additional patient with T‐B+NK+ SCID was identified as the sibling of a patient treated at UCSF. Chart reviews were performed. Molecular analyses of IL7R , IL2RG , JAK3 , and the genes encoding the CD3 T‐cell receptor components δ (CD3D), ε (CD3E), and ζ (CD3Z) were carried out. IL7R mutations were documented in four patients and CD3D mutations in two others. Three patients had no defects found. Only two of nine patients had an HLA‐matched related HCT donor. Both survived, and neither developed GVHD. Five of seven recipients of haploidentical grafts survived. Although the majority of reported cases of T‐B+NK+ SCID are caused by defects in IL7R, CD3 complex defects were also found in this series and should be considered when evaluating patients with T‐B+NK+ SCID. Additional genes, mutations in which account for T‐B+NK+ SCID, remain to be found. Better approaches to early diagnosis and HCT treatment are needed for patients lacking an HLA‐matched related donor.