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Published in: World Journal of Surgical Oncology 1/2021

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

Prognostic value of the C-reactive protein to albumin ratio in colorectal cancer: an updated systematic review and meta-analysis

Authors: Chun-Kai Liao, Yen-Lin Yu, Yueh-Chen Lin, Yu-Jen Hsu, Yih-Jong Chern, Jy-Ming Chiang, Jeng-Fu You

Published in: World Journal of Surgical Oncology | Issue 1/2021

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Abstract

Backgrounds

The inflammatory biomarker “C-reactive protein to albumin ratio (CAR)” has been reported to significantly correlate to a variety of human cancers. However, there are conflicting results regarding the prognostic value of CAR in colorectal cancer. Previous studies mainly assessed patients in Eastern countries, so their findings may not be applicable to the Western population. Therefore, this updated meta-analysis aimed to investigate the prognostic value of pre-treatment CAR and outcomes of patients with colorectal cancer.

Methods

We conducted a systematic search for eligible literature until October 31, 2020, using PubMed and Embase databases. Studies assessing pre-treatment CAR and outcomes of colorectal cancer were included. Outcome measures included overall survival, disease-free survival, progression-free survival, and clinicopathological features. The pooled hazard ratios (HR) with 95% confidence intervals (CI) were used as effective values.

Results

A total of 15 studies involving 6329 patients were included in this study. The pooled results indicated that a high pre-treatment CAR was associated with poor overall survival (HR 2.028, 95% CI 1.808−2.275, p < 0.001) and poor disease-free survival/progression-free survival (HR 1.768, 95% CI 1.321–2.365, p < 0.001). Subgroup analysis revealed a constant prognostic value of the pre-treatment CAR despite different study regions, sample size, cancer stage, treatment methods, or the cut-off value used. We also noted a correlation between high pre-treatment CAR and old age, male sex, colon cancer, advanced stage (III/IV), large tumor size, poor differentiation, elevated carcinoembryonic antigen levels, neutrophil-to-lymphocyte ratio, and the modified Glasgow prognostic score.

Conclusions

High pre-treatment CAR was associated with poor overall survival, disease-free survival, and progression-free survival in colorectal cancer. It can serve as a prognostic marker for colorectal cancer in clinical practice.
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Metadata
Title
Prognostic value of the C-reactive protein to albumin ratio in colorectal cancer: an updated systematic review and meta-analysis
Authors
Chun-Kai Liao
Yen-Lin Yu
Yueh-Chen Lin
Yu-Jen Hsu
Yih-Jong Chern
Jy-Ming Chiang
Jeng-Fu You
Publication date
01-12-2021
Publisher
BioMed Central
Published in
World Journal of Surgical Oncology / Issue 1/2021
Electronic ISSN: 1477-7819
DOI
https://doi.org/10.1186/s12957-021-02253-y

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