Abstract
e15707 Background: Advanced pancreatic ductal adenocarcinoma (PDAC) is a highly lethal disease with a five-year overall survival (OS) of less than 5%. Folfirinox and Nab-Paclitaxel plus Gemcitabine (NabPacGem) are the most active treatments in the first-line (1L). The decision to use Folfirinox or NabPacGem is a matter of debate. Methods: A retrospective cohort of advanced PDAC patients treated from January 2011 to May 2018 in four Spanish institutions was analyzed. The principal objective was to compare OS among patients receiving Folfirinox versus NabPacGem in 1L. Progression-free survival (PFS) was a secondary objective. Results: Characteristics of 251 patients included: median age 66.6 years; male 54.4%; stage IV at diagnosis 66.7%; ECOG 0/1/2 18/70/12%; treated with Folfirinox 18.3% and NabPacGem 81.7%. Patients treated with Folfirinox versus NabPacGem were younger (median age 58.3 vs. 67.9; p<0.001) and had lower ECOG (0/1/2 of 46/54/0% vs. 13/71/16%; p<0.001). Univariate analysis: median PFS 5.8 months (95%CI, 4.3 – 7.3) for Folfirinox and 4.2 months (95%CI, 3.7 – 5.2) for NabPacGem, HR=1.53 (95%CI, 1.1 – 2.1; p=0.012); median OS 12.7 months (95%CI, 8.4 – 14.3) for Folfirinox and 7.6 months (95%CI, 5.8 – 8.8) for NabPacGem, HR=1.38 (95%CI, 0.96 – 1.98; p=0.081). Multivariate Cox analysis (including type of treatment, ECOG and age) showed that ECOG was the only variable associated with PFS and OS (Table). Conclusions: In our study, advanced PDAC patients treated with Folfirinox were younger and had a better performance status than those treated with NabPacGem. We found no differences in survival between both treatments when adjusting by ECOG and age.[Table: see text]
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