ObjectiveTo analyze the relation between ABO blood type and postoperative pathological features of patients with colorectal cancer served by West China Hospital of Sichuan University as a regional center in the current version of Database from Colorectal Cancer (DACCA). MethodsThe data of DACCA was updated on January 5, 2022. According to the screening conditions, the enrolled patients with colorectal cancer were divided into blood type A, B, AB, and O. The differences in the postoperative pathological characteristics of patients with different blood types, such as pathological TNM, T, N, M (pTNM, pT, pN, pM) staging, peripheral nerve involvement, high risk factors, tumor regression grade (TRG), and cancer nodules, were analyzed. ResultsAfter screening, 6 089 data rows were analyzed. The patients involved 2 058 blood type A, 1 469 blood type B, 494 blood type AB, and 2 068 blood type O. The results of statistical analysis showed that: ① There were statistical differences in the overall distribution of pTNM and pM stages among the patients with different blood types (H=11.564, P=0.009; H=7.947, P=0.047), which was reflected in: from the overall distribution trend, the proportion of patients with the four blood types in the same stage was similar, but it could still be seen that patients with blood type AB accounted for the highest proportion in the patients with stage Ⅲ, Ⅳ, M1a, M1b as compared with other blood types. ② There were no statistical differences in the overall distribution of peripheral nerve involvement and TRG in the patients with different blood types (H=3.414, P=0.332; H=1.143, P=0.767). ③ There was statistical difference in the proportion of different grades of high risk factors in the patients with different blood types (H=14.540, P=0.002). Specifically, the proportions of patients with grade 3–5 of high risk factors in the patients with AB blood type were the highest. ④ There was no statistical difference in the proportion of the grade of cancer nodules number in patients with different blood types (H=4.460, P=0.216). ConclusionsFrom results of this study, it is found that there are some differences in pTNM stage, pM stage, and high risk factors of colorectal cancer patients with different blood types, but no differences in pT stage, pN stage, peripheral nerve involvement, TRG, and cancer nodules among different blood types of patients. The influence of blood type on postoperative pathological characteristics of colorectal cancer patients needs to be further explored.
