Prognostic Value of ABO Blood Group in Patients Undergoing Colorectal Cancer Surgery: A Single-Center Experience

Abstract

Objective: It has been observed in previous studies that there is a relationship between ABO blood type and gastrointestinal system cancers. However, in studies conducted in dif- ferent centers, the relationship between the blood type and cancer did not yield the same result. In this single-center study, we investigated the relationship of blood type with col- orectal cancer and its effect on prognosis. Methods: A total of 313 patients who underwent curative surgery for colorectal cancer between January 2013 and December 2019 were included in the study. Data were analyzed retrospectively. Patients with emergency surgery, palliative resection, unavailable records, and distant metastases were excluded from the study. Results: While A blood type was more common in women, other blood types were more common in men. The overall survival for patients with AB blood type was 53.776±7.655 months. And it was significantly worse than the other groups. When examined in the multi- variate Cox regression analysis, it was seen that the blood type was effective on the prognosis. Conclusion: It was observed that the ABO blood type had an effect on prognosis in col- orectal cancer patients.