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find Author "BAI Yuying" 1 results
  • Effect of neoadjuvant regimens on prognosis in patients with rectal cancer: a real-world study based on DACCA

    ObjectiveTo analyze the impact of neoadjuvant regimens on prognosis in patients with rectal cancer in the current version of the Database from Colorectal Cancer (DACCA) database. MethodsPatient information was extracted from the updated version of DACCA on November 24, 2022 according to the established screening criteria, and the following items were analyzed: gender, age, body mass index (BMI), marriage, economic conditions, degree of differentiation, neoadjuvant treatment regimen, and pTNM staging. According to the neoadjuvant treatment regimen, the patients were divided into three groups: chemotherapy group, chemotherapy combined radiotherapy group, and chemotherapy combined targeted therapy group, and the overall survival (OS) and disease-specific survival (DSS) of patients in the three groups were analyzed, and the influencing factors of OS and DSS were analyzed by univariate and multivariate Cox proportional hazard regression models. ResultsAccording to the screening criteria, 1 716 valid data were obtained from the DACCA database, of which 954 (55.6%) were in the chemotherapy group, 332 (19.3%) in the chemotherapy combined radiotherapy group, and 430 (25.1%) in the chemotherapy combined targeted therapy group. The differences in the Kaplan-Merier survival curves of patients with different neoadjuvant regimens for OS and DSS in the three groups were statistically significant (χ2=142.142, P<0.001; χ2=129.528, P<0.001). There were significant differences in OS rate and DSS rate between the three groups in 3 years and 5 years (P<0.001). Further comparison of different neoadjuvant therapy groups showed that the OS of the chemotherapy combined targeted therapy group was slightly better than that of the chemotherapy group in 3 years, however, OS and DSS in 5 years were slightly worse than those the chemotherapy group, but the difference were not statistically significant (P>0.05). The OS and DSS of the chemotherapy group and the chemotherapy combined targeted therapy group were better than those of the chemotherapy combined radiotherapy group in 3 years and 5 years, and the differences were statistically significant (P<0.01). The results of multivariate analysis showed that patients’ age, economic conditions, degree of tumor differentiation, new auxiliary scheme and pTNM staging were the influencing factors of OS and DSS. ConclusionNeoadjuvant treatment regimen will affect the long-term survival prognosis of rectal cancer patients.

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