Background:Combination of age at diagnosis, stage and MYCN amplification stratifies neuroblastoma into low-risk and high-risk. We aimed to establish whether a microRNA (miRNA) signature could be associated with prognosis in both groups.Methods:Microarray expression profiling of human miRNAs and quantitative reverse-transcriptase PCR of selected miRNAs were performed on a preliminary cohort of 13 patients. Results were validated on an independent cohort of 214 patients. The relationship between miRNA expression and the overall or disease-free survival was analysed on the total cohort of 227 patients using the log-rank test and the multivariable Cox proportional hazard model.Results:A total of 15 of 17 miRNAs that discriminated high-risk from low-risk neuroblastoma belonged to the imprinted human 14q32.31 miRNA cluster and two, miR-487b and miR-410, were significantly downregulated in the high-risk group. Multivariable analyses showed miR-487b expression as associated with overall survival and disease-free survival in the whole cohort, independently of clinical covariates. Moreover, miR-487b and miR-410 expression was significantly associated with disease-free survival of the non-MYCN-amplified favourable neuroblastoma: localised (stage 1, 2 and 3) and stage 4 of infant <18 months.Conclusion:Expression of miR-487b and miR-410 shows predictive value beyond the classical high-/low-risk stratification and is a biomarker of relapse in favourable neuroblastoma.
Expression of miR-487b and miR-410 encoded by 14q32.31 locus is a prognostic marker in neuroblastoma
Charles-Henry Gattolliat,L. Thomas,S. Ciafrè,G. Meurice,G. L. Teuff,B. Job,C. Richon,V. Combaret,P. Dessen,D. Valteau-Couanet,E. May,P. Busson,S. Douc-Rasy,J. Bénard
Published 2011 in British Journal of Cancer
ABSTRACT
PUBLICATION RECORD
- Publication year
2011
- Venue
British Journal of Cancer
- Publication date
2011-10-04
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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