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http://repositorio.pediatria.gob.mx:8180/handle/20.500.12103/2419| Título : | Expression of Ik6 and Ik8 isoforms and their association with relapse and death in Mexican children with acute lymphoblastic leukemia |
| Creador: | Reyes Leon, Adriana |
| Nivel de acceso: | Open access |
| Palabras clave : | Biomarcadores de Tumor - genética Biomarcadores de Tumor - metabolismo Niño Preescolar Femenino Humanos Factor de Transcripción Ikaros - genética Factor de Transcripción Ikaros - metabolismo Lactante masculino Leucemia-Linfoma Linfoblástico de Células Precursoras - diagnóstico Leucemia-Linfoma Linfoblástico de Células Precursoras - metabolismo Leucemia-Linfoma Linfoblástico de Células Precursoras - mortalidad Pronóstico Isoformas de Proteínas - genética Isoformas de Proteínas - metabolismo ARN Mensajero - genética ARN Mensajero - metabolismo Recurrencia Biomarkers, Tumor - genetics Biomarkers, Tumor - metabolism Child Child, Preschool Female Humans Ikaros Transcription Factor - genetics Ikaros Transcription Factor - metabolism Infant Male Precursor Cell Lymphoblastic Leukemia-Lymphoma -diagnosis Precursor Cell Lymphoblastic Leukemia-Lymphoma - metabolism Precursor Cell Lymphoblastic Leukemia-Lymphoma - mortality Prognosis Protein Isoforms - genetics Protein Isoforms - metabolism RNA, Messenger - genetics RNA, Messenger - metabolism Recurrence Marcadores de Tumor Factor de Transcripción Ikaros Leucemia Linfocítica Aguda ARNm Biomarkers, Tumor Ikaros Transcription Factor Acute Lymphocytic Leukemia RNAm |
| Descripción : | Expression of the 6 and 8 dominant-negative Ikaros isoforms in pediatric patients with acute lymphoblastic leukemia has been associated with a high risk of relapse and death; due to these isoforms disrupting the differentiation and proliferation of lymphoid cells. The aim of this study was to know the frequency of Ik6 and Ik8 in 113 Mexican ALL-children treated within the National Popular Medical Insurance Program to determine whether there was an association with relapse-free survival, event-free survival and overall survival, and to assess its usefulness in the initial stratification of patients. The expression of these isoforms was analyzed using specific primer sets and nested RT-PCR. The detected transcripts were classified according to the isoforms's sizes reported. A non-expected band of 300 bp from one patient was analyzed by sequencing. Twenty-six patients expressed Ik6 and/or Ik8 and one of them expressed a variant of Ik8 denominated Ik8-deleted. Although the presence of them was not statistically associated with lower relapse free survival (p = 0.432), event free survival (p = 0.667) or overall survival (p = 0.531), inferior overall survival was observed in patients that expressed these isoforms and showed high or standard risk by age and white blood-cell count at diagnosis. Of the 26 patients Ik6+ and/or Ik8+, 14 did not present adverse events; from them 6 were exclusively Ik6+ and/or Ik8+, and 8 were positive for the other Ikaros isoforms (Ik1, Ik2, Ik5, Ik3A, Ik4, Ik4A, Ik7). In the patients studied, the expression of Ik6 and Ik8 did not constitute an independent prognostic factor for relapse or death related to disease; therefore, they could not be used in the initial risk stratification. © 2015 Reyes-León et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
| Colaborador(es) u otros Autores: | Juárez-Velázquez M Medrano-Hernández A Cuenca-Roldán T Salas-Labadía C Navarrete-Meneses MP Rivera-Luna R López-Hernández G Paredes-Aguilera R Pérez-Vera P |
| Fecha de publicación : | 2015 |
| Tipo de publicación: | Artículo |
| Formato: | |
| Identificador del Recurso : | 10.1371/journal.pone.0130756 |
| Fuente: | Plos One 10(7):1-12 |
| URI : | http://repositorio.pediatria.gob.mx:8180/handle/20.500.12103/2419 |
| Idioma: | eng |
| Aparece en las colecciones: | Artículos |
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