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Estudios clínicos y genéticos en tres miembros de una familia afectados con adenomas hipofisarios aislados con prolactinomas homogéneos / Clinical and genetic studies of a three-member familial isolated pituitary adenoma with homogeneous prolactinomas
Vacchiano, Vanina; Seleme, Silvia; Daly, Adrián F; Beckers, Albert; Valdés-Socin, Hernán.
  • Vacchiano, Vanina; University of Liege. Centre Hospitalier Universitaire de Liège. Department of Endocrinology. Liege. BE
  • Seleme, Silvia; University of Liege. Centre Hospitalier Universitaire de Liège. Department of Endocrinology. Liege. BE
  • Daly, Adrián F; University of Liege. Centre Hospitalier Universitaire de Liège. Department of Endocrinology. Liege. BE
  • Beckers, Albert; University of Liege. Centre Hospitalier Universitaire de Liège. Department of Endocrinology. Liege. BE
  • Valdés-Socin, Hernán; University of Liege. Centre Hospitalier Universitaire de Liège. Department of Endocrinology. Liege. BE
Medicina (B.Aires) ; 80(2): 181-184, abr. 2020. ilus
Article in Spanish | LILACS | ID: biblio-1125063
RESUMEN
La mayoría de los adenomas hipofisarios son esporádicos, pero un 3-5% puede ocurrir en un contexto familiar y hereditario. Este es el caso de la neoplasia endocrina múltiple de tipo 1 (NEM1), complejo de Carney (CNC) y adenomas hipofisarios aislados familiares (FIPA). El FIPA es una condición infrecuente, que ocurre en un contexto familiar, no asociada a NEM t ipo1 ni CNC. Los FIPA pueden ser homogéneos (todos los adenomas tienen el mismo fenotipo) o heterogéneos (diferente fenotipo tumoral). Describimos una familia congolesa en la que dos hermanas y una prima fueron diagnosticadas a los 29, 32 y 40 años, respectivamente, con un prolactinoma (FIPA homogéneo). Las pacientes presentaron macroadenomas no invasivos al momento del diagnóstico, con buena respuesta biológica y tumoral al tratamiento con cabergolina hasta una dosis máxima de 1.5 mg/semanal. De las dos hermanas, una cursó un embarazo sin complicaciones. Durante el seguimiento de 12 años, ninguna de ellas presentó elementos clínicos o biológicos compatibles con NEM1 o CNC, por lo que dichos genes no se estudiaron. El análisis genético en dos de las pacientes permitió descartar la posibilidad de una mutación germinal del gen aryl hydrocarbon receptor interacting protein (AIP). Se considera que el 80% de los pacientes con FIPA no presentan mutación del gen AIP, por lo que se requieren futuros estudios en este tipo de familias, para poder determinar otros genes afectados involucrados en su fisiopatología.
ABSTRACT
Most pituitary adenomas are sporadic, but 3-5% can occur in a family and hereditary context. This is the case of multiple endocrine neoplasia type 1 (MEN1), Carney complex (CNC) and familial isolated pituitary adenomas (FIPA). FIPA is an infrequent condition that occurs in a family context, not associated with MEN type1 or CNC. FIPA kindred can be homogeneous (all adenomas affected in the family having the same tumor phenotype) or heterogeneous (different tumor phenotypes in the affected members). We describe a Congolese family in which two sisters and a cousin were diagnosed with a prolactinoma (homogenous FIPA) at the ages of 29, 32 and 40 years, respectively. The patients presented with macroadenomas at the time of diagnosis, non-invasive tumors and good biological response to cabergoline treatment (maximum dose of 1.5 mg/weekly). Of these two sisters, one went through a pregnancy without complications. Because no MEN1 and CNC clinical and biochemical features were detected during the 12-year follow-up, these genes were not investigated. The genetic analysis of the aryl hydrocarbon receptor interacting protein (AIP) was normal. As nearly 80% of patients with FIPA do not have a mutation in the AIP gene, future studies in these families are required to identify other affected genes involved in their physiopathology.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Pituitary Neoplasms / Adenoma / Growth Hormone-Secreting Pituitary Adenoma Type of study: Diagnostic study / Prognostic study Limits: Adult / Female / Humans Language: Spanish Journal: Medicina (B.Aires) Journal subject: Medicine Year: 2020 Type: Article Affiliation country: Belgium Institution/Affiliation country: University of Liege/BE

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Full text: Available Index: LILACS (Americas) Main subject: Pituitary Neoplasms / Adenoma / Growth Hormone-Secreting Pituitary Adenoma Type of study: Diagnostic study / Prognostic study Limits: Adult / Female / Humans Language: Spanish Journal: Medicina (B.Aires) Journal subject: Medicine Year: 2020 Type: Article Affiliation country: Belgium Institution/Affiliation country: University of Liege/BE