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Giugliano, Teresa; Santoro, Claudia; Torella, Annalaura; Del Vecchio Blanco, Francesca; Grandone, Anna; Onore, Maria Elena; Melone, Mariarosa Anna Beatrice; Straccia, Giulia; Melis, Daniela; Piccolo, Vincenzo; Limongelli, Giuseppe; Buono, Salvatore; Perrotta, Silverio; Nigro, Vincenzo; Piluso, Giulio
Genes, 07/2019, Letnik: 10, Številka: 8Journal Article
Pigmentary manifestations can represent an early clinical sign in children affected by Neurofibromatosis type 1 (NF1), Legius syndrome, and other neurocutaneous disorders. The differential molecular diagnosis of these pathologies is a challenge that can now be met by combining next generation sequencing of target genes with concurrent second-level tests, such as multiplex ligation-dependent probe amplification and RNA analysis. We clinically and genetically investigated 281 patients, almost all pediatric cases, presenting with either NF1 ( = 150), only pigmentary features (café au lait macules with or without freckling; ( = 95), or clinical suspicion of other RASopathies or neurocutaneous disorders ( = 36). The causative variant was identified in 239 out of the 281 patients analyzed (85.1%), while 42 patients remained undiagnosed (14.9%). The and genes were mutated in 73.3% and 2.8% of cases, respectively. The remaining 8.9% carried mutations in different genes associated with other disorders. We achieved a molecular diagnosis in 69.5% of cases with only pigmentary manifestations, allowing a more appropriate clinical management of these patients. Our findings, together with the increasing availability and sharing of clinical and genetic data, will help to identify further novel genotype-phenotype associations that may have a positive impact on patient follow-up.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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