Hereditary autoinflammatory syndromes: a Brazilian multicenter study

J Clin Immunol. 2012 Oct;32(5):922-32. doi: 10.1007/s10875-012-9688-x. Epub 2012 May 8.

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.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Brazil
  • Carrier Proteins / genetics
  • Cytoskeletal Proteins / genetics
  • Female
  • Hereditary Autoinflammatory Diseases / diagnosis*
  • Hereditary Autoinflammatory Diseases / genetics*
  • Humans
  • Male
  • Mutation
  • NLR Family, Pyrin Domain-Containing 3 Protein
  • Nod2 Signaling Adaptor Protein / genetics
  • Phosphotransferases (Alcohol Group Acceptor) / genetics
  • Pyrin
  • Receptors, Tumor Necrosis Factor, Type I / genetics

Substances

  • Carrier Proteins
  • Cytoskeletal Proteins
  • MEFV protein, human
  • NLR Family, Pyrin Domain-Containing 3 Protein
  • NLRP3 protein, human
  • NOD2 protein, human
  • Nod2 Signaling Adaptor Protein
  • Pyrin
  • Receptors, Tumor Necrosis Factor, Type I
  • TNFRSF1A protein, human
  • Phosphotransferases (Alcohol Group Acceptor)
  • mevalonate kinase