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2015 ; 5
(ä): 10200
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Analysis of the genetic basis of periodic fever with aphthous stomatitis,
pharyngitis, and cervical adenitis (PFAPA) syndrome
#MMPMID25988833
Di Gioia SA
; Bedoni N
; von Scheven-Gête A
; Vanoni F
; Superti-Furga A
; Hofer M
; Rivolta C
Sci Rep
2015[May]; 5
(ä): 10200
PMID25988833
show ga
PFAPA syndrome is the most common autoinflammatory syndrome in children from
Western countries. In spite of its strong familial clustering, its genetic basis
and inheritance pattern are still unknown. We performed a comprehensive genetic
study on 68 individuals from 14 families. Linkage analysis suggested a
susceptibility locus on chromosome 8, but direct molecular sequencing did not
support this initial statistical finding. Exome sequencing revealed the absence
of any gene that was mutated in all patients. Exhaustive screening of genes
involved in other autoinflammatory syndromes or encoding components of the human
inflammasome showed no DNA variants that could be linked to PFAPA molecular
pathology. Among these, the previously-reported missense mutation V198M in the
NLRP3 gene was clearly shown not to co-segregate with PFAPA. Our results on this
relatively large cohort indicate that PFAPA syndrome is unlikely to be a
monogenic condition. Moreover, none of the several genes known to be involved in
inflammation or in autoinflammatory disorders seem to be relevant, alone, to its
etiology, suggesting that PFAPA results from oligogenic or complex inheritance of
variants in multiple disease genes and/or non-genetic factors.
|Adaptor Proteins, Signal Transducing/genetics
[MESH]