Skip to main content

Advertisement

Log in

A tumor-specific microRNA signature predicts survival in clear cell renal cell carcinoma

  • Original Article – Clinical Oncology
  • Published:
Journal of Cancer Research and Clinical Oncology Aims and scope Submit manuscript

Abstract

Purpose

Clear cell renal cell carcinoma (ccRCC) is the most common subtype of kidney cancers in adults, and microRNAs (miRNAs) differentially expressed in ccRCC tumors have been identified and proposed to predict prognosis. In the present study, we comprehensively analyzed the genome-wide miRNA expression profiles in ccRCC, with the aim to generate a tumor-specific miRNA signature of prognostic values.

Methods

The miRNA profiles in tumor and the adjacent normal tissue were analyzed, and the association of the differentially expressed miRNAs with patient survival was examined with univariate Cox regression analysis. Finally, a tumor-specific miRNA signature was generated and examined with Kaplan–Meier survival, univariate, and multivariate Cox regression analyses.

Results

A total of 147 miRNAs were found differentially expressed between tumor and matched non-tumor tissues from 58 ccRCC patients. The prognostic values of these differentially expressed miRNAs were subsequently analyzed in the 411 ccRCC patients, and 22 miRNAs were found significantly correlated with patient survival. Finally, a tumor-specific miRNA signature of 22 miRNAs was generated and validated as an independent prognostic parameter.

Conclusions

A tumor-specific miRNA signature consisting of 22 miRNAs was identified and validated as an independent prognostic factor, which could serve as a novel biomarker for ccRCC prognostication and help in predicting treatment outcome.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

Abbreviations

RCC:

Renal cell carcinoma

ccRCC:

Clear cell renal cell carcinoma

miRNA:

microRNA

PN:

Partial nephrectomy

RN:

Radical nephrectomy

TNM:

Tumor node metastasis

TCGA:

The Cancer Genome Atlas

AJCC:

American Joint Committee on Cancer

IQR:

Inter-quartile range

RPM:

Reads per million

OS:

Overall survival

References

Download references

Acknowledgments

This study was supported by grants from the National Natural Science Foundation of China (81070597 and 81370853), Science and Education Development Program of the Jiangsu Province Health Board (LJ201107), Six Talent Peaks of the Jiangsu Province Health Bureau (2011-WS-093), and Research and Innovation Program for Graduates of Jiangsu Province (CXZZ13_0583). Our gratitude also goes to The Cancer Genome Atlas (TCGA) project for generating, curating and providing high-quality biological and clinical data about clear cell renal cell carcinoma.

Conflict of interest

None.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Rui-Peng Jia.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary material 1 (DOC 232 kb)

Supplementary material 2 (DOC 54 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Ge, YZ., Wu, R., Xin, H. et al. A tumor-specific microRNA signature predicts survival in clear cell renal cell carcinoma. J Cancer Res Clin Oncol 141, 1291–1299 (2015). https://doi.org/10.1007/s00432-015-1927-0

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00432-015-1927-0

Keywords

Navigation