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Published in: Journal of Translational Medicine 1/2021

Open Access 01-12-2021 | Colorectal Cancer | Research

Genome-wide analysis identifies critical DNA methylations within NTRKs genes in colorectal cancer

Authors: Zijian Chen, Zenghong Huang, Yanxin Luo, Qi Zou, Liangliang Bai, Guannan Tang, Xiaolin Wang, Guangwen Cao, Meijin Huang, Jun Xiang, Huichuan Yu

Published in: Journal of Translational Medicine | Issue 1/2021

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Abstract

Background

Neurotrophic tropomyosin receptor kinases (NTRKs) are a gene family function as oncogene or tumor suppressor gene in distinct cancers. We aimed to investigate the methylation and expression profiles and prognostic value of NTRKs gene in colorectal cancer (CRC).

Methods

An analysis of DNA methylation and expression profiles in CRC patients was performed to explore the critical methylations within NTRKs genes. The methylation marker was validated in a retrospectively collected cohort of 229 CRC patients and tested in other tumor types from TCGA. DNA methylation status was determined by quantitative methylation-specific PCR (QMSP).

Results

The profiles in six CRC cohorts showed that NTRKs gene promoter was more frequently methylated in CRC compared to normal mucosa, which was associated with suppressed gene expression. We identified a specific methylated region within NTRK3 promoter targeted by cg27034819 and cg11525479 that best predicted survival outcome in CRC. NTRK3 promoter methylation showed independently predictive value for survival outcome in the validation cohort (P = 0.004, HR 2.688, 95% CI [1.355, 5.333]). Based on this, a nomogram predicting survival outcome was developed with a C-index of 0.705. Furthermore, the addition of NTRK3 promoter methylation improved the performance of currently-used prognostic model (AIC: 516.49 vs 513.91; LR: 39.06 vs 43.64, P = 0.032). Finally, NTRK3 promoter methylation also predicted survival in other tumors, including pancreatic cancer, glioblastoma and stomach adenocarcinoma.

Conclusions

This study highlights the essential value of NTRK3 methylation in prognostic evaluation and the potential to improve current prognostic models in CRC and other tumors.
Appendix
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Metadata
Title
Genome-wide analysis identifies critical DNA methylations within NTRKs genes in colorectal cancer
Authors
Zijian Chen
Zenghong Huang
Yanxin Luo
Qi Zou
Liangliang Bai
Guannan Tang
Xiaolin Wang
Guangwen Cao
Meijin Huang
Jun Xiang
Huichuan Yu
Publication date
01-12-2021
Publisher
BioMed Central
Published in
Journal of Translational Medicine / Issue 1/2021
Electronic ISSN: 1479-5876
DOI
https://doi.org/10.1186/s12967-021-02740-6

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