1301P Sequential therapy of metastatic pancreatic ductal adenocarcinoma (PDAC) after failure of gemcitabine plus nab-paclitaxel with either 5-FU/folinic acid (5FU/LV) plus irinotecan (FOLFIRI) followed by 5FU/LV plus oxaliplatin (OFF) or the reverse sequence: The PANTHEON trial (AIO PAK 0116) - Modest, D.P.; Heinemann, V.; Schütt, P.; Angermeier, S.; Haberkorn, M.; Waidmann, O.; Graeven, U.; Wille, K.; Kunzmann, V.; Henze, L.; Constantin, C.; De Wit, M.; et al. (Annals of Oncology, 2022)