Clinical Characteristics and Genetic Profiles of Severe Combined Immunodeficiency in China

Study Overview
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Brief Summary
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Severe combined immunodeficiency (SCID), a rare primary immunodeficiency dieases (PID), is poorly characterized in mainland China. We meant to explore the patients with SCID refered to our hospital and summarize their clinical manifestations and genetic features.

Detailed Description
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Diagnostic criteria were based on recommendations by the Pan-American Group for Immunodeficiency and the European Society for Immunodeficiencies, which included failure to thrive, persistent diarrhea, respiratory symptoms, and oral candidiasis, or Pneumocystis pneumonia, severe bacterial infections, and disseminated Bacillus Calmette-Guérin (BCG) infection during the first 2 to 7 months of life. In addition, patients included in the study were <2 years of age, with either transplacentally acquired maternal T cells or <20 % CD3+ T cells, the absolute lymphocyte count (ALC) <3000/mm3. Exclusion criteria include HIV infection, congenital rubella, DiGeorge syndrome, Zap70 deficiency, Cartilage hair hypoplasia, PNP deficiency and MHC class II deficiency.

Official Title
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Clinical Characteristics and Genetic Profiles of Severe Combined Immunodeficiency in China

Conditions
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Severe Combined Immunodeficiency

Intervention / Treatment
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* Genetic: gene sequencing


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Diagnostic criteria were based on recommendations by the Pan-American Group for Immunodeficiency and the European Society for Immunodeficiencies, which included failure to thrive, persistent diarrhea, respiratory symptoms, and oral candidiasis, or Pneumocystis pneumonia, severe bacterial infections, and disseminated Bacillus Calmette-Guérin (BCG) infection during the first 2 to 7 months of life. Exclusion Criteria: HIV infection, congenital rubella, DiGeorge syndrome, Zap70 deficiency, Cartilage hair hypoplasia, PNP deficiency and MHC class II deficiency.

Ages Eligible for Study
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Minimum Age: 2 Months
Maximum Age: 2 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Severe Combined Immunodeficiency<br>Case histories were analyzed to grasp important characteristics of the diseases. Distribution of lymphocyte subsets from peripheral blood were examined by flow cytometry. Amplify and identify exons from gene IL-2RG by PCR and agarose gel electrophoresis, and then followed by gene sequencing. | Genetic: gene sequencing<br>* Amplify and identify exons from gene IL-2RG by PCR and agarose gel electrophoresis, and then followed by gene sequencing.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| times of infections |  | 2 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Clinical Characteristics, Genetic Profiles