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Preoperative Low Creatine Kinase as a Poor Prognostic Factor in Patients with Colorectal Cancer
Mitsunori Ushigome1, Hideaki Shimada2,3, Tomoaki Kaneko1
1Department of Surgery, Toho University School of Medicine, Tokyo, Japan.
Purpose:
This study aimed to evaluate the clinicopathological and prognostic significance of preoperative serum creatine kinase (CK) levels in colorectal cancer.
Methods:
This study analyzed 1169 patients with colorectal cancer at stages 0 (n = 35), I (n = 301), II (n = 456), III (n = 339), and IV (n = 38). The CK cut-off value was 52 U/L to predict recurrence based on receiver operative characteristics curve. Clinicopathological factors were compared between the low (< 52 U/L) and high CK groups (≥ 52 U/L). The multivariate analysis evaluated relapse-free survival (RFS) and overall survival (OS) following CK status.
Results:
The female sex, elderly age (≥ 75), deep tumor (pT4), and carcinoembryonic antigen (+) were independently associated with low CK status. The recurrent rate was significantly higher in the low CK group than in the high CK group (19.1% vs. 11.7%, p < 0.001). Elderly age, pT4, pN (+), preoperative carbohydrate antigen (CA) 19-9 (+), and low CK status were independent risk factors for RFS. Elderly age, pT4, pN (+), preoperative CA19-9 (+), and low CK status were independent risk factors for OS.
Conclusion:
Preoperative low CK status was associated with deep tumors and was a poor prognostic factor in patients with colorectal cancer.
