| Home > Articles > Published articles > The lincRNA HOTAIRM1, located in the HOXA genomic region, is expressed in acute myeloid leukemia, impacts prognosis in patients in the intermediate-risk cytogenetic category, and is associated with a distinctive microRNA signature |
(Institut d'Investigacions Biomèdiques August Pi i Sunyer) (Institut Germans Trias i Pujol. Institut de Recerca contra la Leucèmia Josep Carreras) (Institut d'Investigacions Biomèdiques August Pi i Sunyer) (Institut Català d'Oncologia) (Hospital Universitari Joan XXIII de Tarragona) (Hospital Clínic Universitari (València)) (Institut Germans Trias i Pujol. Institut de Recerca contra la Leucèmia Josep Carreras) (Institut Català d'Oncologia) (Hospital Universitari Son Llàtzer (Palma de Mallorca, Balears)) (Hospital Universitari Son Espases (Palma de Mallorca, Balears)) (Institut Germans Trias i Pujol. Institut de Recerca contra la Leucèmia Josep Carreras) (Institut d'Investigació Biomèdica Sant Pau) (Institut d'Investigacions Biomèdiques August Pi i Sunyer) (Institut d'Investigacions Biomèdiques August Pi i Sunyer)| Date: | 2015 |
| Abstract: | Long non-coding RNAs (lncRNAs) are deregulated in several tumors, although their role in acute myeloid leukemia (AML) is mostly unknown. We have examined the expression of the lncRNA HOX antisense intergenic RNA myeloid 1 (HOTAIRM1) in 241 AML patients. We have correlated HOTAIRM1 expression with a miRNA expression profile. We have also analyzed the prognostic value of HOTAIRM1 expression in 215 intermediate-risk AML (IR-AML) patients. The lowest expression level was observed in acute promyelocytic leukemia (P < 0. 001) and the highest in t(6;9) AML (P = 0. 005). In 215 IR-AML patients, high HOTAIRM1 expression was independently associated with shorter overall survival (OR:2. 04;P = 0. 001), shorter leukemia-free survival (OR:2. 56; P < 0. 001) and a higher cumulative incidence of relapse (OR:1. 67; P = 0. 046). Moreover, HOTAIRM1 maintained its independent prognostic value within the favorable molecular subgroup (OR: 3. 43; P = 0. 009). Interestingly, HOTAIRM1 was overexpressed in NPM1-mutated AML (P < 0. 001) and within this group retained its prognostic value (OR: 2. 21; P = 0. 01). Moreover, HOTAIRM1 expression was associated with a specific 33-microRNA signature that included miR-196b (P < 0. 001). miR-196b is located in the HOX genomic region and has previously been reported to have an independent prognostic value in AML. miR-196b and HOTAIRM1 in combination as a prognostic factor can classify patients as high-, intermediate-, or low-risk (5-year OS: 24% vs 42% vs 70%; P = 0. 004). Determination of HOTAIRM1 level at diagnosis provided relevant prognostic information in IR-AML and allowed refinement of risk stratification based on common molecular markers. The prognostic information provided by HOTAIRM1 was strengthened when combined with miR-196b expression. Furthermore, HOTAIRM1 correlated with a 33-miRNA signature. |
| Grants: | Instituto de Salud Carlos III CM13/00205 Instituto de Salud Carlos III PI13/00999 Instituto de Salud Carlos III RETICS/RD12/0036/0010 |
| Note: | Altres ajuts: SDCSD from School of Medicine, University of Barcelona |
| Rights: | Tots els drets reservats.  |
| Language: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Subject: | Leucèmia ; Genètica ; AML ; HOTAIRM ; HOX ; Lincrna ; Lncrna |
| Published in: | Oncotarget, Vol. 6 Núm. 31 (October 2015) , ISSN 1949-2553 |
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