Melanoma hereditary predisposition in Uruguayan families

Preliminary results

  • Alejandra Larre Borges García Universidad de la República, Facultad de Medicina, Hospital de Clínicas, Departamento Básico de Medicina y Cátedra de Dermatología, Asistente
  • Malena Scarone Universidad de la República, Facultad de Medicina, Hospital de Clínicas, Departamento Básico de Medicina, Ayudante de Clase
  • Lucía Delgado Universidad de la República, Facultad de Medicina, Hospital de Clínicas, Unidad de Oncogenética, Coordinadora. Servicio de Oncología Clínica, Profesora Agregada
  • Jimena Núñez Universidad de la República, Facultad de Medicina, Hospital de Clínicas, Departamento Básico de Medicina, Ex Ayudante de Clase
  • Mercedes Laporte Universidad de la República, Facultad de Medicina, Hospital de Clínicas, Cátedra de Dermatología, Ex Asistente
  • Graciela Fernández Universidad de la República, Facultad de Medicina, Hospital de Clínicas, Departamento Básico de Medicina, Ayudante de Investigación
  • Carlos Bazzano Universidad de la República, Facultad de Medicina, Hospital de Clínicas, Cátedra de Dermatología, Profesor Adjunto
  • Miguel Martínez Asuaga Universidad de la República, Facultad de Medicina, Hospital de Clínicas, Cátedra de Dermatología, Profesor Agregado. Unidad de Melanoma, integrante
Keywords: MELANOMA, HEREDITARY NEOPLASTIC SYNDROMES, MUTATION, URUGUAY

Abstract

Cutaneous melanoma is the cancer whose incidence has the highest growing rates worldwide. Mortality rates have not decreased in spite of diagnostic and management therapies. There are two expressions of melanoma: sporadic and hereditary forms. The latest include persons with high risk to develop melanoma, whose frequency varies according to the studied population. The aim of this study is to analyze hereditary predisposition of melanoma in Uruguay. Fourteen families with high risk of hereditary melanoma were identified using a sift questionnaire. Search for germline mutations in CDKN2A and CDK4 was performed in 17 patients of these families who gave informed consent using PCR-SSCP (Polymerase Chain Reaction - Single Stranded Conformational Polymorphism). Fragments with atypical SSCP patterns were analyzed by sequenciation. Two mutations were identified; the first mutation in exon 2 of CDKN2A (E88X) in two first-degree relatives carriers of multiple melanomas and familial syndrome of atypical nevus (SFNA) with familial history of melanoma and pancreatic cancer (this germinal mutation has not been described in families with melanoma) and the second mutation (G101W) is one of the most frequent worldwide. Both mutations were identified in patients with SFNA and multiple melanoma within families. The frequency of these mutations is the same as reported in previous studies with similar selection criteria.

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Published
2007-06-30
How to Cite
1.
Larre Borges García A, Scarone M, Delgado L, Núñez J, Laporte M, Fernández G, Bazzano C, Martínez Asuaga M. Melanoma hereditary predisposition in Uruguayan families. Rev. Méd. Urug. [Internet]. 2007Jun.30 [cited 2024Nov.14];23(2):109-15. Available from: http://www2.rmu.org.uy/ojsrmu311/index.php/rmu/article/view/625