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Background Although the efficacy of neoadjuvant chemotherapy with gemcitabine plus S-1 (NAC GS) has recently been reported in resectable pancreatic cancer, severe adverse events were frequently observed. Sarcopenia has been reported to be associated with reduced antitumor response and chemotherapy toxicity in several malignancies. The aim of this study is to evaluate the impact of body composition on short-term outcomes of NAC GS in resectable pancreatic cancer patients. Methods Clinicopathological data of consecutive patients treated with NAC GS at our institution from February 2019 to April 2020 were retrospectively reviewed. Anthropometric variables were calculated at the third lumbar vertebra using pretreatment computed tomography images. We investigated the association between body composition variables, and antitumor response and chemotherapy toxicity. Results Among 62 patients included in this study, 25 patients (40%) were sarcopenic at diagnosis. Sixty-one patients received surgery at our institution and 57 patients received pancreatic resection (R0/R1 resection 56/1). Fifty-six patients completed two cycles of NAC GS and severe adverse events (≥grade 3) occurred in 42 patients (hematologic toxicity 41 patients [66%]; non-hematologic toxicity 3 patients). Body mass index and total adipose tissue index were significantly lower in sarcopenic patients compared to non-sarcopenic patients. Completion rate of NAC, rate of treatment delay/interruption, relative dose intensity of gemcitabine and S-1, radiological and pathological tumor response after NAC were not different between sarcopenic and non-sarcopenic patients. Furthermore, there was no significant association between body composition, and severe adverse events and intolerance. Conclusions In our experience, NAC GS was similarly tolerable and effective in resectable pancreatic cancer patients regardless of the presence of sarcopenia.

japanese journal of clinical oncology

The impact of body composition on short-term outcomes of neoadjuvant chemotherapy with gemcitabine plus S-1 in patients with resectable pancreatic cancer