Dermatologic Manifestations of Severe Combined Immunodeficiency Treatment & Management
- Author: Henry K Wong, MD, PhD; Chief Editor: Dirk M Elston, MD more...
Medical Care
Treatment of the acute infectious process is critical, but the only cure for severe combined immunodeficiency (SCID) is bone marrow transplantation.[8, 9] HLA-identical donor bone marrow transplantation is optimal, followed by HLA-matched unrelated donor transplantation. HLA-mismatched related donor transplantation is an alternative and can often be successful if an HLA-matched donor cannot be identified.
- This approach is successful if the disease is diagnosed within their first 3 months of life. Early transplantation before 3.5 months is associated with better overall survival.[10]
- Neither pretransplantation chemoablation nor GVHD prophylaxis is required for successful engraftment with an identical donor; however, pretransplantation myeloablation is necessary in nonidentical HLA-matched donors.
- All blood products must receive 25-Gy irradiation to prevent fatal GVHD. Advances in gene therapy should lead to the correction of single genetic defects in lymphocytes.
- No live vaccines, such as the BCG vaccine, should be administered to patients with SCID prior to bone marrow transplantation.
- Several gene therapy clinical trials based on gene transfer to hematopoietic cells have been performed, but these approaches still require further development before becoming routine protocols.[11, 12, 13]
Consultations
- Consultation with an internal medicine specialist and an infectious disease specialist is important in the management and prevention of infection.
- A hematologist and/or an oncologist should be consulted for bone marrow transplantation.
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| Genetic Disease | T-Cell Defect | B-Cell Defect | NK-Cell Defect | Inheritance Pattern |
| Reticular dysgenesis | Yes | Yes | Yes | Autosomal recessive |
| ADA deficiency | Yes | Yes | Yes | Autosomal recessive |
| RAG1 and RAG2 deficiency | Yes | Yes | No | Autosomal recessive |
| T-cell receptor and B-cell receptor recombination gene deficiency | Yes | Yes | No | Autosomal recessive |
| Common g chain deficiency | Yes | No | Yes | X-linked |
| JAK3 deficiency | Yes | No | No | Autosomal recessive |
| IL-7Ra deficiency | Yes | No | No | Autosomal recessive |
| Omenn syndrome | Yes | No | No | Autosomal recessive |
| ZAP-70 kinase | CD4+ present | No | No | Autosomal recessive |
| CD4+ lymphopenia | CD8+ present | No | No | Autosomal recessive |
| MHC II deficiency | CD8+ present | No | No | Autosomal recessive |
| p56lck deficiency | CD8+ present | No | No | Autosomal recessive |

