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Meta-analysis of prognostic role of Ki-67 labeling index in gastric carcinoma

Meta-analysis of prognostic role of Ki-67 labeling index in gastric carcinoma

Post author correction

Article Type: ORIGINAL RESEARCH ARTICLE

DOI:10.5301/ijbm.5000277

Authors

Jung-Soo Pyo, Nae Yu Kim

Abstract

Background

This meta-analysis aimed to elucidate the prognostic role of the Ki-67 labeling index (LI) in gastric cancer (GC).

Methods

The current study included 3,615 GC patients in 20 eligible studies, and evaluated the prognostic role of Ki-67 LI in GC. Subgroup analysis was conducted based on depth of invasion and cutoff value for high Ki-67 LI.

Results

A high Ki-67 LI correlated significantly with worse survival (hazard ratio [HR] = 1.214, 95% confidence interval [CI], 1.004-1.468). However, there was no significant correlation between high Ki-67 LI and worse survival in advanced GC (HR = 1.252, 95% CI, 0.801-1.956). The subgroup with cutoff value ≤25% showed a significant correlation with worse survival, but this was not seen in the subgroup with cutoff >25% (HR = 1.433, 95% CI, 1.094-1.876 vs. HR = 1.005, 95% CI, 0.801-1.262). In addition, in the 10% <Ki-67 LI ≤ 20% range, there was a significant correlation between high Ki-67 LI and worse overall survival (HR = 1.931, 95% CI, 1.013-3.310).

Conclusions

A high Ki-67 LI correlated significantly with a worse prognosis in GC patients. Further cumulative studies for the optimal cutoff value for high Ki-67 LI are needed before application in clinical practice.

Article History

Disclosures

Financial support: This study is supported by Eulji Medi-Bio Research Institute (EMBRI) grants 2011.
Conflict of interest: The authors declare that they have no conflict of interest.

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Authors

Affiliations

  •  Department of Pathology, Eulji University Hospital, Eulji University School of Medicine, Daejeon - Republic of Korea
  •  Study Group for Meta-Analysis, Eulji University Hospital, Eulji University School of Medicine, Daejeon - Republic of Korea
  •  Department of Internal Medicine, Eulji University Hospital, Eulji University School of Medicine, Daejeon - Republic of Korea

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