Document Detail

Primary Immunodeficiency Diseases in Different Age Groups: A Report on 1,008 Cases from a Single Brazilian Reference Center.
MedLine Citation:
PMID:  23354909     Owner:  NLM     Status:  Publisher    
Primary immunodeficiencies (PIDs) represent a large group of diseases that affect all age groups. Although PIDs have been recognized as rare diseases, there is epidemiological evidence suggesting that their real prevalence has been underestimated. We performed an evaluation of a series of 1,008 infants, children, adolescents and adults with well-defined PIDs from a single Brazilian center, regarding age at diagnosis, gender and PID category according to the International Union of Immunological Societies classification. Antibody deficiencies were the most common category in the whole series (61 %) for all age groups, with the exception of <2-year-old patients (only 15 %). In the >30-year-old group, antibody deficiencies comprised 84 % of the diagnoses, mostly consisting of common variable immunodeficiency, IgA deficiency and IgM deficiency. Combined immunodeficiencies represented the most frequent category in <2-years-old patients. Most congenital defects of phagocytes were identified in patients <5 -years of age, as were the diseases of immune dysregulation, with the exception of APECED. DiGeorge syndrome and ataxia-telangiectasia were the most frequent entities in the category of well-defined syndromes, which were mostly identified in patients <10-years of age. Males represented three-quarters and two-thirds of <2 -years-old and 2-5-years -old patients, respectively, whereas females predominated among the >30-year-old patients. Our data indicated that some PIDs were only detected at early ages, likely because affected patients do not survive long. In addition, our data pointed out that different strategies should be used to search for PIDs in infants and young children as compared to older patients.
Magda Carneiro-Sampaio; Dewton Moraes-Vasconcelos; Cristina M Kokron; Cristina M A Jacob; Myrthes Toledo-Barros; Mayra B Dorna; Letícia A Watanabe; Ana Karolina B B Marinho; Ana Paula Moschione Castro; Antonio C Pastorino; Clóvis Artur A Silva; Maurício D Ferreira; Luiz V Rizzo; Jorge E Kalil; Alberto J S Duarte
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-29
Journal Detail:
Title:  Journal of clinical immunology     Volume:  -     ISSN:  1573-2592     ISO Abbreviation:  J. Clin. Immunol.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8102137     Medline TA:  J Clin Immunol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Pediatrics (Division of Allergy and Immunology and Division of Rheumatology), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP), São Paulo, Brazil,
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