New Insights Into Pheochromocytoma Surveillance of Young Patients With VHL Missense Mutations

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art_FAGUNDES_New_Insights_Into_Pheochromocytoma_Surveillance_of_Young_Patients_2019.PDF (517.9 KB)
Citações na Scopus
14
Tipo de produção
article
Data de publicação
2019
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
ENDOCRINE SOC
Autores
Citação
JOURNAL OF THE ENDOCRINE SOCIETY, v.3, n.9, p.1682-1692, 2019
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Context: Von Hippel-Lindau (VHL) disease is an autosomal dominant syndrome caused by germline mutations in the VHL gene. Guidelines recommend pheochromocytoma (PHEO) biochemical screening should start at age 5 years. Objective: Genotype-phenotype correlations in VHL, focusing on PHEO penetrance in children, were studied. Design: We retrospectively evaluated 31 individuals (median age at diagnosis was 26 years) with diagnosed VHL disease. Results: PHEO was diagnosed in six children with VHL. A large PHEO (5 cm) was detected in a 4-yearold boy with p.Gly114Ser mutation. PHEO penetrance was 55% starting at age 4 years. VHL missense mutations were identified in 11 of 22 families (50%), frameshift mutations in four (18.2%), stop codon in three (13.6%), splicing site in two (9.1%), and large gene deletion in two (9.1%). The codon 167 (n = 10) was a hotspot for VHL mutations and was significantly associated with PHEO (90% vs. 38%; P = 0.007). PHEOs and pancreatic neuroendocrine tumors (PNETs) were strongly associated with VHL missense mutations compared with other mutations (89.5% vs. 0% and 73.7% vs. 16.7%; P = 0.0001 and 0.002, respectively). In contrast, pancreatic cysts (91.7% vs. 26.3%; P = 0.0001), renal cysts (66.7% vs. 26.3%; P = 0.027), and central nervous system hemangioblastomas (91.7% vs. 47.3%; P = 0.012) were more frequent in VHL with nonmissense mutations. Conclusion: VHL missense mutations were highly associated with PHEO and PNETs. Our data support that in children with VHL harboring missense mutations, biochemical screening for PHEO should be initiated at diagnosis.
Palavras-chave
von Hippel-Lindau, pheochromocytoma, pancreatic neuroendocrine tumors, surveillance
URI
https://observatorio.fm.usp.br/handle/OPI/34094
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MPT
Artigos e Materiais de Revistas Científicas - FM/MCM
Artigos e Materiais de Revistas Científicas - HC/ICESP
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - HC/InRad
Artigos e Materiais de Revistas Científicas - LIM/14
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