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• W4254264217 abstract "Abstract Background: It is important to understand how elderly patients with locally advanced pancreatic carcinoma (LAPC) should be treated, since the number of elderly patients with cancer has been increasing recently. However, the optimal treatment for elderly patients with LAPC is unclear. The purpose of this study was to evaluate the efficacy and safety of hypofractionated intensity-modulated radiotherapy (IMRT) with concurrent gemcitabine for elderly patients with LAPC. Methods: We retrospectively analyzed data of LAPC patients aged ≥75 years treated with hypofractionated IMRT (48 Gy in 15 fractions), with concurrent weekly gemcitabine at our institution from February 2013 to December 2018. Overall survival (OS), progression free survival (PFS), locoregional progression free survival (LRPFS), distant metastasis free survival (DMFS) and the pattern of recurrence and toxicity were analyzed. Results: Fifteen patients were administered this treatment during the period. The median age was 78 years (range, 75-86 years), and the Eastern Cooperative Oncology Group (ECOG) performance status (PS) of all patients was 0-1. The median survival time (MST) and median PFS were 20.4 (95% confidence interval (CI) 10.3-36.8) and 13.5 (95% CI 6.4-20.3) months, respectively, and the one-year OS and PFS rates were 80.0% (95% CI 50-93.1%) and 66.7% (95% CI, 37.5-84.6%), respectively. The median LRPFS and median DMFS were 15.6 (95% CI 6.4-36.8) and 14.9 (95% CI 7.0-20.5) months, respectively, and the one-year LRPFS and DMFS rates were 73.3% (95% CI, 43.6-89.1%) and 66.7% (95% CI 37.5-84.6%), respectively. Non-hematologic grade 3 toxicity was observed in three cases of which only one was induced by radiotherapy, and grade 4-5 non-hematologic acute or late toxicities were not observed. Conclusions: The OS and PFS of elderly patients with LAPC treated using hypofractionated IMRT using gemcitabine concurrently were favorable without the occurrence of severe toxicity. This treatment strategy is feasible and promising for the elderly LAPC patients with good PS. Trial registration Retrospectively registered." @default.
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• W4254264217 date "2020-07-22" @default.
• W4254264217 modified "2023-09-30" @default.
• W4254264217 title "Hypofractionated Intensity-Modulated Radiotherapy with Concurrent Chemotherapy for Elderly Patients with Locally Advanced Pancreatic Carcinoma" @default.
• W4254264217 doi "https://doi.org/10.21203/rs.3.rs-45419/v1" @default.
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