Abstract
BackgroundMany new antitumor drugs to treat soft tissue sarcoma (STS) were approved in the 2010's, and the need for the management of STS patients by medical oncologists has been increasing. Clinical data about the patterns of treatment of STS patients by medical oncologists in Japan are lacking. MethodsWe retrospectively reviewed the clinical records of STS patients who consulted the Department of Medical Oncology at the Cancer Institute Hospital of the Japanese Foundation for Cancer Research between August 2012 and March 2017. The STS patients who received any systemic chemotherapy at the Department of Medical Oncology were enrolled in the analyses. We evaluated the details of the systemic chemotherapies used: treatment regimens, drugs, and treatment settings. We focused on the treatment lines and the prognoses of salvage chemotherapy administered for recurrent and/or metastatic STS patients. ResultsAmong the 273 patients who consulted the Department of Medical Oncology, 185 patients (68%) received some systemic chemotherapy; 20 patients received chemotherapy as definitive and/or in a perioperative setting, and 171 patients in a salvage setting. The median overall survival of the 171 recurrent and/or metastatic STS patients who received salvage chemotherapy was 14.1 months (95%CI: 10.4–17.8), and the median number of salvage chemotherapy treatment lines throughout their follow-up periods was two lines (range 1–9). ConclusionAbout two-thirds of the STS patients who consulted a medical oncologist underwent chemotherapy. In the recurrent and/or metastatic settings, newly approved drugs such as pazopanib were frequently used, and the prognoses of the STS patients treated by medical oncologists were similar to those reported in recent global clinical trials. For the better management of patients with STS, medical oncologists should contribute to the management as multidisciplinary team members.
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