Abstract
Severe combined immunodeficiency (SCID), a rare type of genetic associated immune disorder, is poorly characterized in mainland China. We retrospectively reviewed 44 patients with SCID who received treatment from 2004 to 2011 in Shanghai, China, and herein summarize their clinical manifestations and immunological and preliminary genetic features. The male-to-female ratio was 10:1. Twenty five patients presented with X-SCID symptoms. Only one patient was diagnosed before the onset of symptoms due to positive family history. The mean time of delay in the diagnosis of X-SCID was 2.69 months (range, 0.5–8.67). Thirty-seven of the 44 patients died by the end of 2011 with the mean age of death being 7.87 months (range, 1.33–31). Six patients received hematopoietic stem cell transplantation (HSCT); only one of them survived, who was transplanted twice. The time between onset and death was shorter in the HSCT-treated group compared with the untreated group (2.87 ± 1.28 and 3.34 ± 0.59 months, respectively), probably due to active infections during transplantation. Bacillus Calmette–Guérin (BCG) complications occurred in 14 of the 34 patients who received BCG vaccination. Transfusion-induced graft-versus-host disease occurred in 5 patients. Total 20 mutations in interleukin-2 receptor subunit gamma (IL2RG) were identified in 22 patients, including 11 novel mutations. Most patients were misdiagnosed before referred to our SCID Center. Therefore, establishing more diagnostic centers dedicated to the care of PID and accessible by primary immunodeficiency patients will facilitate early, correct diagnosis and better care of SCID in China.
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Abbreviations
- ADA:
-
Adenosine deaminase
- ALC:
-
Absolute lymphocyte count
- BCG:
-
Bacillus Calmette–Guérin
- GVHD:
-
Graft-versus-host disease
- HLA:
-
Human leukocyte antigen
- HSCT:
-
Hematopoietic stem cell transplantation
- IL2RG :
-
Interleukin-2 receptor subunit gamma
- NK:
-
Natural killer
- PID:
-
Primary immunodeficiency disease
- SCID:
-
Severe combined immunodeficiency
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This research was supported by grants from National Natural Science Foundation of China (81273314) and Ph.D. Programs, Foundation of Shanghai Jiao Tong University School of Medicine (BXJ201025)
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Chun-Mei Yao, Xiao-Hua Han and Yi-Dan Zhang are co-first authors and had equal contributions to the study.
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Yao, CM., Han, XH., Zhang, YD. et al. Clinical Characteristics and Genetic Profiles of 44 Patients with Severe Combined Immunodeficiency (SCID): Report from Shanghai, China (2004–2011). J Clin Immunol 33, 526–539 (2013). https://doi.org/10.1007/s10875-012-9854-1
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DOI: https://doi.org/10.1007/s10875-012-9854-1