Abstract
The survival of hemodialysis (HD) patients with cancer is poor, which may be caused by undertreatment due to renal dysfunction. Particularly, adjuvant chemotherapy after surgery may be considered optional because of its preventive nature. This study investigated the current frequency of administration of adjuvant chemotherapy to HD patients compared with non-HD patients in Japan. We used data from the Hospital-Based Cancer Registries national database linked to health services utilization data to analyze cases of newly diagnosed colon cancer, gastric cancer, breast cancer, and non-small cell lung cancer (NSCLC) at the stages where adjuvant chemotherapy is generally required. We compared the performance rate of adjuvant chemotherapy and the adjuvant chemotherapy regimens between HD and non-HD patients from October 2011 to December 2017. Of the 99,761 patients who underwent curative surgery, 1207 (1%) were HD patients. HD patients received adjuvant chemotherapy less frequently than non-HD patients (24% vs. 63%, p < 0.001). After adjusting for potential confounders, HD remained negatively related to adjuvant chemotherapy administration for all four cancer types. Among all patients who received adjuvant chemotherapy 0(N=61,873), HD patients were less likely to receive standard regimens and chemotherapy requiring dose adjustment than non-HD patients (88% vs. 95%, p < 0.001 and 92% vs. 98%, p < 0.001, respectively). This trend was particularly pronounced among patients with gastric cancer. HD patients were less likely to receive adjuvant chemotherapy with standard regimens than non-HD patients.
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