Published in:
01-10-2012
Hereditary Autoinflammatory Syndromes: A Brazilian Multicenter Study
Authors:
Adriana A. Jesus, Erika Fujihira, Mariana Watase, Maria T. Terreri, Maria O. Hilario, Magda Carneiro-Sampaio, Claudio A. Len, Sheila K. Oliveira, Marta C. Rodrigues, Rosa M. Pereira, Blanca Bica, Nilzio A. Silva, Andre Cavalcanti, Roberto Marini, Flavio Sztajnbok, Maria V. Quintero, Virginia P. Ferriani, Dewton Moraes-Vasconcelos, Clovis A. Silva, Joao B. Oliveira
Published in:
Journal of Clinical Immunology
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Issue 5/2012
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Abstract
Objective
To evaluate the prevalence of genetic defects in clinically suspected autoinflammatory syndromes (AIS) in a Brazilian multicenter study.
Methods
The study included 102 patients with a clinical diagnosis of Cryopyrin Associated Periodic Syndromes (CAPS), TNF Receptor Associated Periodic Syndrome (TRAPS), Familial Mediterranean Fever (FMF), Mevalonate Kinase Deficiency (MKD) and Pediatric Granulomatous Arthritis (PGA). One of the five AIS-related genes (NLRP3, TNFRSF1A, MEFV, MVK and NOD2) was evaluated in each patient by direct DNA sequencing, based on the most probable clinical suspect.
Results
Clinical diagnoses of the 102 patients were: CAPS (n = 28), TRAPS (n = 31), FMF (n = 17), MKD (n = 17) and PGA (n = 9). Of them, 27/102 (26 %) had a confirmed genetic diagnosis: 6/28 (21 %) CAPS patients, 7/31 (23 %) TRAPS, 3/17 (18 %) FMF, 3/17 (18 %) MKD and 8/9 (89 %) PGA.
Conclusion
We have found that approximately one third of the Brazilian patients with a clinical suspicion of AIS have a confirmed genetic diagnosis.