6533b82cfe1ef96bd12901cc
RESEARCH PRODUCT
Clinical and molecular characterization of 112 single-center patients with Neurofibromatosis type 1.
Gregorio SerraFederico ZaraGiovanni CorselloLuca LagallaMaria PiccioneClara GiambroneEttore PiroVincenzo Antonasubject
0301 basic medicineGenotype-phenotype correlation; New mutation; NF1 gene; NF1 microdeletion syndrome; Adolescent; Adult; Age Factors; Child; Child Preschool; Cohort Studies; DNA Mutational Analysis; Female; Genes Neurofibromatosis 1; Genetic Association Studies; Genetic Predisposition to Disease; Humans; Italy; Male; Middle Aged; Neurofibromatosis 1; Prevalence; Prognosis; Retrospective Studies; Risk Assessment; Sex Factors; Young Adult; Mutation MissenseMaleGenotype-phenotype correlationDNA Mutational AnalysisDiseaseCohort Studies0302 clinical medicineDNA Mutational AnalysisGenotypePrevalenceMedicineYoung adultChildNew mutationlcsh:RJ1-570Age FactorsMiddle AgedPrognosisItalyNF1 geneChild PreschoolCohortFemaleNF1 microdeletion syndromeCohort studyAdultmedicine.medical_specialtycongenital hereditary and neonatal diseases and abnormalitiesNeurofibromatosis 1AdolescentMutation MissenseRisk Assessment03 medical and health sciencesYoung AdultSex FactorsGenes Neurofibromatosis 1HumansGenetic Predisposition to DiseaseNeurofibromatosisPreschoolGenetic Association StudiesRetrospective Studiesbusiness.industryResearchRetrospective cohort studylcsh:Pediatricsmedicine.diseaseDermatology030104 developmental biologyGenesPediatrics Perinatology and Child HealthMutationMissensebusiness030217 neurology & neurosurgerydescription
Abstract Background The aim of this retrospective study was to define clinical and molecular characteristics of a large sample of neurofibromatosis type 1 (NF1) patients, as well as to evaluate mutational spectrum and genotype-phenotype correlation. NF1 is a relatively common neurogenetic disorder (1:2500–1:3000 individuals). It is caused by mutations of the NF1 gene on chromosome 17ql1.2, with autosomal dominant pattern of inheritance and wide phenotypical variability. Café-au-lait spots (CALs), cutaneous and/or subcutaneous neurofibromas (CNFs/SCNFs), skinfold freckling, skeletal abnormalities, Lisch nodules of the iris and increased risk of learning and intellectual disabilities, as well as tumors of the nervous system and other organs are its main clinical features. Methods The preliminary group collected 168 subjects with clinical suspicion of NF1. They were evaluated following the National Institutes of Health (NIH) criteria for NF1, revised by Gutmann et al. 1997, integrated for 67 of them by molecular testing. According to these references, 112 of 168 patients were diagnosed as NF1. The sample was characterized by an equal sex ratio (57 males, 55 females) and age distribution ranging from 10 days to 60 years of age (mean age, 13 years). Results A wide spectrum of clinical features has been observed in our patients. Mutational analysis resulted positive in 51 cases (76%). Twenty-four mutations detected in our cohort have not been reported to date. Conclusions This study may contribute to a better definition of genotypic and phenotypic features of NF1 patients, with respect to further insights into the clinical characterization of the disease. In addition, an amplification of the spectrum of mutations in the NF1 gene has been documented.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-02-02 | Italian journal of pediatrics |