Multigene Sequencing Analysis of Children Born Small for Gestational Age With Isolated Short Stature
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Citações na Scopus
53
Tipo de produção
article
Data de publicação
2019
Título da Revista
ISSN da Revista
Título do Volume
Editora
ENDOCRINE SOC
Autores
Citação
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM, v.104, n.6, p.2023-2030, 2019
Resumo
Context: Patients born small for gestational age (SGA) who present with persistent short stature could have an underlying genetic etiology that will account for prenatal and postnatal growth impairment. We applied a unique massive parallel sequencing approach in cohort of patients with exclusively nonsyndromic SGA to simultaneously interrogate for clinically substantial genetic variants. Objective: To perform a genetic investigation of children with isolated short stature born SGA. Design: Screening by exome (n = 16) or targeted gene panel (n = 39) sequencing. Setting: Tertiary referral center for growth disorders. Patients and Methods: We selected 55 patients born SGA with persistent short stature without an identified cause of short stature. Main Outcome Measures: Frequency of pathogenic findings. Results: We identified heterozygous pathogenic or likely pathogenic genetic variants in 8 of 55 patients, all in genes already associated with growth disorders. Four of the genes are associated with growth plate development, IHH (n = 2), NPR2 (n = 2), SHOX (n = 1), and ACAN (n = 1), and two are involved in the RAS/MAPK pathway, PTPN11 (n = 1) and NF1 (n = 1). None of these patients had clinical findings that allowed for a clinical diagnosis. Seven patients were SGA only for length and one was SGA for both length and weight. Conclusion: These genomic approaches identified pathogenic or likely pathogenic genetic variants in 8 of 55 patients (15%). Six of the eight patients carried variants in genes associated with growth plate development, indicating that mild forms of skeletal dysplasia could be a cause of growth disorders in this group of patients.
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Referências
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