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2017 ; 4
(ä): 12
Nephropedia Template TP
gab.com Text
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English Wikipedia
Genetic Screening of Mutations Associated with Fabry Disease in a Nationwide
Cohort of Juvenile Idiopathic Arthritis Patients
#MMPMID28299312
Gonçalves MJ
; Mourão AF
; Martinho A
; Simões O
; Melo-Gomes J
; Salgado M
; Estanqueiro P
; Ribeiro C
; Brito I
; Fonseca JE
; Canhão H
Front Med (Lausanne)
2017[]; 4
(ä): 12
PMID28299312
show ga
Fabry's disease (FD) is a lysosomal storage disorder associated with an
alpha-galactosidase A deficiency. The prevalence of FD among juvenile idiopathic
arthritis (JIA) patients with established diagnosis is unknown, but as
musculoskeletal pain may be an important complaint at presentation, misdiagnosed
cases are anticipated. With this study, we aim to calculate the frequency of
FD-associated mutations in a cohort of JIA patients. Children with JIA from a
national cohort were selected. Clinical and laboratorial information was recorded
in the Portuguese rheumatic diseases register (http://Reuma.pt). Molecular
genetic testing to detect GLA gene mutations was performed. After the multiplex
polymerase chain reactions technique for DNA amplification, direct sequencing of
the complete sequence of GLA gene was completed. From a cohort of 292 patients
with JIA (188 females, 104 males), mutations were identified in 5 patients (all
female). Four patients had the mutation D313Y, a rare GLA variant, which is
associated with low enzymatic levels in plasma, but normal lysosomal levels. One
patient presented the missense mutation R118C, which was previously described in
Mediterranean patients with FD. This is the first screening of FD mutations in a
cohort of JIA patients. No "classic" pathogenic FD mutations were reported. The
late-onset FD-associated mutation, R118C, was found in a frequency of 0.34%
(1/292).