Evidence for the founder effect of RET533 as the common Greek and Brazilian ancestor spreading multiple endocrine neoplasia 2A

Autor(es)

Cunha, Lucas L. ; Lindsey, Susan C. ; Franca, Maria Inez C. ; Sarika, Leda ; Papathoma, Alexandra ; Kunii, Ilda S. ; Cerutti, Janete M. ; Dias-da-Silva, Magnus R. ; Alevizaki, Maria ; Maciel, Rui M. B.

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN JOURNAL OF ENDOCRINOLOGY; v. 176, n. 5, p. 515-519, MAY 2017.
• Citações Web of Science: 7

Resumo

Objectives: About one-quarter of patients with medullary thyroid cancer (MTC) have inherited disease due to mutations in the RET gene. A rare mutation in exon 8 (G533C) of RET, previously described in a large Brazilian family with MEN2A, also appeared to be clustering in Greece, whereas it was rarely reported in other ethnic groups. The aim of this study was to identify a possible common ancestry between these carriers. Patients and methods: Twelve RET G533C mutation carriers, four randomly selected from the Brazilian cohort and eight from apparently unrelated Greek families, were studied for a possible common ancestral origin. RET flanking microsatellite markers at chromosome 10q (D10S197, D10S196, D10S1652 and D10S537) were used. Results: Genomic DNA analysis using these markers showed that many of these apparently unrelated individuals shared a common haplotype indicating a common ancestral origin. Conclusion: Our data suggest that Brazilian and Greek patients with MTC carrying the G533C mutation in exon 8 of RET gene originate from a common ancestor. Due to historical reasons, we speculate that the more plausible explanation for the origin of this mutation is in Greece. (AU)

• Processo FAPESP: 09/50575-4 - Desenvolvimento de um modelo de tumorigênese in vivo para o Carcinoma Medular de Tiroide através da técnica de transgênese somática em embrião de galinha
• Beneficiário: Susan Chow Lindsey
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 10/51547-1 - Carcinoma medular de tiroide hereditario: percepcao e atitude de pacientes, familiares e profissionais de saude sobre questoes bioeticas.
• Beneficiário: Rui Monteiro de Barros Maciel
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/06570-6 - Sequenciamento completo do exoma, Paired-end RNA e genoma: novos insights sobre a natureza genética do câncer de tiróide na idade adulta e na faixa etária pediátrica e aplicações na prática clínica
• Beneficiário: Janete Maria Cerutti
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 06/60402-1 - Carcinoma medular da tiróide: revisitação à clínica, à biologia molecular, à bioquímica e à biologia do desenvolvimento depois dos achados da genética molecular
• Beneficiário: Rui Monteiro de Barros Maciel
• Modalidade de apoio: Auxílio à Pesquisa - Temático