PV QA 1 - Poster Viewing Q&A 1
Purpose/Objective(s): To investigate the efficacy and safety of concurrent chemoradiotherapy with capecitabine or oxaliplatin in locally advanced (T3-4 / N + M0) rectal cancer.
Materials/Methods: 56 patients with rectal cancer after radical operation were randomly divided into group A: capecitabine + oxaliplatin concurrent chemoradiotherapy group (Cap-Oxa-CRT trial, 30 cases), group B: capecitabine concurrent chemoradiotherapy group (Cap-CRT trial as Control group, 26 cases), both groups were given pelvic radiotherapy DT50.4Gy/28f/6 weeks. The two groups received adjuvant chemotherapy after concurrent CRT.
Results: (1) The 3-year overall survival rate, 3-year local recurrence rate and 3-year distant metastasis rate were not significantly different between the two groups (P> 0.05). (2) The incidence of grade 1-2 acute toxicity in group A during concurrent CRT was significantly higher than that in group B, the difference was statistically significant (P <0.05). Grade 3 toxicities were not statistically significant between the two groups (P> 0.05). No grade 4 toxicity was found in both groups. The incidences of interrupted or suspend concurrent chemotherapy in both groups were 19.23% and 46.67%, respectively, P <0.05. The incidences of interruption or suspension of radiotherapy were 11.54% and 30% respectively (P> 0.05). The completion rate of adjuvant chemotherapy in group B was higher than that in group A, but the difference was not statistically significant (P> 0.05). In postoperative adjuvant chemotherapy, the incidence of bone marrow suppression in group A was higher than that in group B (P <0.05), and the incidence of non-hematologic adverse reactions was similar between the two groups.
Conclusion: Capecitabine combined oxaliplatin concurrent CRT, and oxaliplatin concurrent CRT have a good effect for treatment of patients with locally advanced rectal cancer after radical resection of rectal cancer. However, group A failed to further improve the curative effect, and its grade 1-2 toxicity increased significantly.
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