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BMC Gastroenterology
Published in: BMC Gastroenterology 1/2023

Open Access 01-12-2023 | Colorectal Cancer | Research

Postoperative serum interleukin-6 levels correlate with survival in stage I-III colorectal cancer

Authors: Shouhan Feng, Zeshi Li, Mei Liu, Qianwen Ye, Tianhui Xue, Bing Yan

Published in: BMC Gastroenterology | Issue 1/2023

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Abstract

Aims

The preoperative serum levels of inflammatory mediators, including C-reactive protein (CRP), procalcitonin (PCT) and interleukin-6 (IL-6), have been demonstrated to be correlated with patient outcomes in colorectal cancer (CRC); however, the prognostic role of these levels has been less well-studied in postoperative settings.

Materials and methods

A total of 122 stage I-III CRC patients were retrospectively enrolled. Serum levels of CRP, PCT and IL-6 were measured after surgery, and their prognostic value was evaluated. Kaplan-Meier analysis was used to determine the differences in disease-free survival (DFS) and overall survival (OS) between patients with different levels of these mediators, and the Cox proportional hazards model was used to estimate the risk factors.

Results

In contrast to CRP and PCT, only the level of IL-6 was significant in predicting DFS (P = 0.01) but not OS (P = 0.07). A total of 66.39% (81/122) of patients were assigned to the low IL-6 group and no significant differences were found in the collected clinicopathological parameters among the low or high IL-6 subgroups. The level of IL-6 was negatively correlated with postoperative (1 w) (R=-0.24, P = 0.02) absolute lymphocyte counts. Patients with low levels of IL-6 had better DFS (log rank = 6.10, P = 0.01) but not OS (log rank = 2.28, P = 0.13). Finally, the level of IL-6 was an independent risk factor for DFS (HR: 1.81, 95% CI: 1.03–3.15, P = 0.04).

Conclusions

Compared to CRP and PCT, the level of IL-6 was observed to be the only significant factor in predicting the prognosis of stage I-III CRC patients after surgery, and a low level of IL-6 was associated with good DFS.
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Metadata
Title
Postoperative serum interleukin-6 levels correlate with survival in stage I-III colorectal cancer
Authors
Shouhan Feng
Zeshi Li
Mei Liu
Qianwen Ye
Tianhui Xue
Bing Yan
Publication date
01-12-2023
Publisher
BioMed Central
Published in
BMC Gastroenterology / Issue 1/2023
Electronic ISSN: 1471-230X
DOI
https://doi.org/10.1186/s12876-023-02800-9

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