Abstract:
BACKGROUND:Neuroblastoma (NB) is the most common extracranial pediatric solid tumor with a highly variable clinical course, ranging from spontaneous regression to life-threatening disease. Survival rates for high-risk NB patients remain disappointingly low despite multimodal treatment. Thus, there is an urgent clinical need for additional biomarkers to improve risk stratification, treatment management, and survival rates in children with aggressive NB. RESULTS:Using gene promoter methylation analysis in 48 neuroblastoma tumors with microarray technology, we found a strong association between survival and gene promoter hypermethylation (P = 0.036). Hypermethylation of 70 genes significantly differentiated high-risk survivor patients from those who died during follow-up time. Sixteen genes with relevant roles in cancer biology were further validated in an additional cohort of 83 neuroblastoma tumors by bisulfite pyrosequencing. High promoter methylation rates of these genes were found in patients with metastatic tumors (either stage metastatic (M) or metastatic special (MS)), 18 months or older at first diagnosis, MYCN amplification, relapsed, and dead. Notably, the degree of methylation of retinoblastoma 1 (RB1) and teratocarcinoma-derived growth factor 1 (TDGF1) predicts event-free and overall survival independently of the established risk factors. In addition, low RB1 mRNA expression levels associate with poor prognosis suggesting that promoter methylation could contribute to the transcriptional silencing of this gene in NB. CONCLUSIONS:We found a new epigenetic signature predictive for NB patients' outcome: the methylation status of RB1 and TDGF1 associate with poorer survival. This information is useful to assess prognosis and improve treatment selection.
journal_name
Clin Epigeneticsjournal_title
Clinical epigeneticsauthors
Yáñez Y,Grau E,Rodríguez-Cortez VC,Hervás D,Vidal E,Noguera R,Hernández M,Segura V,Cañete A,Conesa A,Font de Mora J,Castel Vdoi
10.1186/s13148-015-0054-8subject
Has Abstractpub_date
2015-02-27 00:00:00pages
16eissn
1868-7075issn
1868-7083pii
54journal_volume
7pub_type
杂志文章abstract:BACKGROUNDS:Colorectal cancer (CRC) results from the accumulation of epigenetic and genetic changes in colon cells during neoplasic transformation, which the activation of Wingless (Wnt) signaling pathway is a common mechanism for CRC initiation. The Wnt pathway is mainly regulated by Wnt antagonists, as secreted frizz...
journal_title:Clinical epigenetics
pub_type: 杂志文章
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journal_title:Clinical epigenetics
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journal_title:Clinical epigenetics
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journal_title:Clinical epigenetics
pub_type: 杂志文章
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journal_title:Clinical epigenetics
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journal_title:Clinical epigenetics
pub_type: 临床试验,杂志文章
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journal_title:Clinical epigenetics
pub_type: 杂志文章
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更新日期:2020-01-13 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-018-0558-0
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-015-0073-5
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-016-0174-9
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journal_title:Clinical epigenetics
pub_type: 杂志文章
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更新日期:2019-04-27 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-017-0368-9
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journal_title:Clinical epigenetics
pub_type: 杂志文章
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-017-0341-7
更新日期:2017-04-24 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-020-00849-x
更新日期:2020-04-21 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-017-0432-5
更新日期:2017-12-20 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/1868-7083-5-6
更新日期:2013-04-26 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-018-0525-9
更新日期:2018-07-13 00:00:00
abstract::Heterozygous mutation of the transcription factor HNF1B is the most common cause of monogenetic developmental renal disease. Disease-associated mutations fall into two categories: HNF1B intragenic mutations and a 1.3 Mb deletion at chromosome 17q12. An increase in neurodevelopmental disorders has been observed in indi...
journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-018-0530-z
更新日期:2018-07-18 00:00:00
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journal_title:Clinical epigenetics
pub_type: 临床试验,杂志文章
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更新日期:2016-11-16 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-019-0710-5
更新日期:2019-08-05 00:00:00