Maintenance Therapy With OSE2101 Vaccine Alone or in Combination With Nivolumab, or FOLFIRI After Induction Therapy With FOLFIRINOX in Patients With Locally Advanced or Metastatic Pancreatic Ductal Adenocarcinoma

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Current standard of care for patients with advanced pancreatic ductal adenocarcinoma (PDAC) is chemotherapy, preferential regimen being FOLFIRINOX (5FU, leucovorin, irinotecan, and oxaliplatin) in fit patients (PS 0-1, bilirubin < 1.5 ULN). The question of how and when the FOLFIRINOX regimen and dos...

Current standard of care for patients with advanced pancreatic ductal adenocarcinoma (PDAC) is chemotherapy, preferential regimen being FOLFIRINOX (5FU, leucovorin, irinotecan, and oxaliplatin) in fit patients (PS 0-1, bilirubin < 1.5 ULN). The question of how and when the FOLFIRINOX regimen and doses can be deescalated after a period of disease control (i.e. maintenance therapy) remains unanswered. In routine practice, oxaliplatin is usually stopped after 6-8 cycles due to limiting neuropathy, and the fluoropyrimidine is continued, either alone or, more frequently, in combination with irinotecan (FOLFIRI regimen), until disease progression. Immune therapies have opened new opportunities in cancer therapy. However, results of immunotherapy in PDAC have been disappointing so far, with failure of checkpoint inhibitor monotherapies (anti-CTLA4 and anti-PD-L1 monoclonal antibodies [mAb]) in progressive advanced PDAC, while monovalent vaccines were demonstrated to be safe but with limited activity.

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