Diagnostic yield of a multigene sequencing approach in children classified as idiopathic short stature

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art_ANDRADE_Diagnostic_yield_of_a_multigene_sequencing_approach_in_2022.PDF (810.66 KB)
Citações na Scopus
3
Tipo de produção
article
Data de publicação
2022
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
BIOSCIENTIFICA LTD
Autores
MALAQUIAS, Alexsandra Christianne
COLLETT-SOLBERG, Paulo Ferrez
GOMES, Nathalia L. R. A.
TIBURCIO, Angelica M. F. P.
SOUZA, Micheline A. R.
Citação
ENDOCRINE CONNECTIONS, v.11, n.12, article ID e220214, 10p, 2022
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
ObjectiveMost children with short stature remain without an etiologic diagnosis after extensive clinical and laboratory evaluation and are classified as idiopathic short stature (ISS). This study aimed to determine the diagnostic yield of a multigene analysis in children classified as ISS. Design and methodsWe selected 102 children with ISS and performed the genetic analysis as part of the initial investigation. We developed customized targeted panel sequencing, including all genes already implicated in the isolated short-stature phenotype. Rare and deleterious single nucleotide or copy number variants were assessed by bioinformatic tools. ResultsWe identified 20 heterozygous pathogenic (P) or likely pathogenic (LP) genetic variants in 17 of 102 patients (diagnostic yield = 16.7%). Three patients had more than one P/LP genetic alteration. Most of the findings were in genes associated with the growth plate differentiation: IHH (n = 4), SHOX (n = 3), FGFR3 (n = 2), NPR2 (n = 2), ACAN (n = 2), and COL2A1 (n = 1) or involved in the RAS/MAPK pathway: NF1 (n = 2), PTPN11 (n = 1), CBL (n = 1), and BRAF (n = 1). None of these patients had clinical findings to guide a candidate gene approach. The diagnostic yield was higher among children with severe short stature (35% vs 12.2% for height SDS <= or > -3; P = 0.034). The genetic diagnosis had an impact on clinical management for four children. ConclusionA multigene sequencing approach can determine the genetic etiology of short stature in up to one in six children with ISS, removing the term idiopathic from their clinical classification.
Palavras-chave
idiopathic short stature, multigene sequencing analysis, genetic, mutation
URI
https://observatorio.fm.usp.br/handle/OPI/51378
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MCM
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - LIM/25
Artigos e Materiais de Revistas Científicas - LIM/42