Abstract
This study aimed to evaluate the effectiveness and safety of gemcitabine (GEM) plus nab-paclitaxel (GnP) in patients aged ≥ 75years with advanced pancreatic cancer and compare it with monotherapy (GEM or S-1). We retrospectively reviewed the data of consecutive patients with advanced pancreatic cancer aged ≥ 75years who received either GnP or monotherapy (GEM or S-1) between January 2014 and May 2020. The primary efficacy outcome was overall survival (OS). A total of 96 patients were included in this study; 51 were treated with GnP and 45 with monotherapy (31 with GEM and 14 with S-1). The median OS and progression-free survival were 10.8 and 6.7months in the GnP group and 10.7 and 4.3months in the monotherapy group, respectively. The treatment effect on OS was consistently favorable in the GnP group across most subgroups, particularly in patients with locally advanced cancer, modified Glasgow prognostic score of 0 or 1, and neutrophil/lymphocyte ratio < 3.1. The disease control rates were 76% and 48% in the GnP and monotherapy groups, respectively, and grade 3 or 4 neutropenia occurred in 23 (45%) and 11 (24%) patients of the GnP and monotherapy groups, respectively. This study demonstrated that GnP was not superior to monotherapy with regard to OS. However, multivariate analysis showed that GnP treatment positively affected the OS and could be considered as a treatment option, even for elderly patients.
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