Differentiating PFAPA syndrome from monogenic periodic fevers

Marco Gattorno, Roberta Caorsi, Antonella Meini, Marco Cattalini, Silvia Federici, Francesco Zulian, Elisabetta Cortis, Giuseppina Calcagno, Alberto Tommasini, Rita Consolini, Gabriele Simonini, Maria Antonietta Pelagatti, Maurizia Baldi, Isabella Ceccherini, Alessandro Plebani, Joost Frenkel, Maria Pia Sormani, Alberto Martini

Research output: Contribution to journalArticle

Abstract

OBJECTIVES: To analyze whether there were clinical differences between genetically positive and negative patients fulfilling periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome criteria and to test the accuracy of the Gaslini diagnostic score for identifying patients with PFAPA syndrome with higher probabilities of carrying relevant mutations in genes associated with periodic fevers. METHODS: Complete clinical and genetic information was available for 393 children with periodic fever; 82 had positive genetic test results, 75 had incomplete genetic test results, and 236 had negative results for MVK, TNFRSF1A, and MEFV mutations. Current diagnostic criteria for PFAPA syndrome were applied. RESULTS: Of 393 children, 210 satisfied PFAPA syndrome criteria; 43 carried diagnostic mutations (mevalonate kinase deficiency: n = 33; tumor necrosis factor receptor-associated periodic syndrome: n = 3; familial Mediterranean fever: n=7), 37 displayed low-penetrance mutations or incomplete genotypes, and 130 demonstrated negative genetic testing results. Genetically positive patients had higher frequencies of abdominal pain and diarrhea (P <.001), vomiting (P = .006), and cutaneous rash and arthralgia (P = .01). Genetically negative patients had a higher frequency of exudative pharyngitis (P = .010). Genetically undetermined patients showed the same pattern of symptom frequency as genetically negative patients. The Gaslini diagnostic score was able to identify 91% of genetically positive patients correctly, with a global accuracy of 66%. CONCLUSION: The Gaslini diagnostic score represents a useful tool to identify patients meeting PFAPA syndrome criteria and at low risk of carrying relevant mutations in genes associated with periodic fevers.

Original languageEnglish
JournalPediatrics
Volume124
Issue number4
DOIs
Publication statusPublished - 2009

Keywords

  • And cervical adenitis syndrome
  • Aphthous stomatitis
  • Classification
  • Diagnostic score
  • Molecular analysis
  • Periodic fever
  • Pharyngitis

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health

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    Gattorno, M., Caorsi, R., Meini, A., Cattalini, M., Federici, S., Zulian, F., Cortis, E., Calcagno, G., Tommasini, A., Consolini, R., Simonini, G., Pelagatti, M. A., Baldi, M., Ceccherini, I., Plebani, A., Frenkel, J., Sormani, M. P., & Martini, A. (2009). Differentiating PFAPA syndrome from monogenic periodic fevers. Pediatrics, 124(4). https://doi.org/10.1542/peds.2009-0088