Características citogenéticas y detección de anormalidades de alto riesgo en mieloma múltiple

Background: Cytogenetic abnormalities observed in the bone marrow of patients with multiple myeloma (MM) are an important prognostic factor for risk stratification. Aim: To investigate karyotype characteristics and frequency of the high-risk cytogenetic abnormalities t(4;14), t(14;16) and del(17p)...

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Autores principales: Legües,María Eugenia, Morales,Paulina, Valenzuela,Mercedes, Encina,Andrea, Martí,María José, Bascuñán,Claudia, Cornejo,Paulina, Peña,Camila, Undurraga,María Soledad
Lenguaje:Spanish / Castilian
Publicado: Sociedad Médica de Santiago 2019
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872019000100061
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Sumario:Background: Cytogenetic abnormalities observed in the bone marrow of patients with multiple myeloma (MM) are an important prognostic factor for risk stratification. Aim: To investigate karyotype characteristics and frequency of the high-risk cytogenetic abnormalities t(4;14), t(14;16) and del(17p) in Chilean patients with MM. Material and Methods: We studied 30 patients with MM by conventional cytogenetics (CC) and fluorescent in situ hybridization of plasma cells selected using cytoplasmic immunoglobulin staining (cIg-FISH). Results: Overall, the two techniques in combination allowed us to identify clonal genetic abnormalities in 47% of patients. The t(4;14) abnormality was observed in 19% of patients, del(17p) was observed in 10% of patients, and t(14;16) was not detected. Conclusions: Our results showed frequencies of high-risk abnormalities similar to those reported abroad. Cytogenetic studies should be performed routinely for all MM patients at the moment of diagnosis.