RT Conference Proceedings T1 Optimal maintenance treatment strategy following an anti-EGFR-based first-line induction therapy in patients with RAS wild type metastatic colorectal cancer: An individual patient data pooled analysis of clinical trials A1 Raimondi, A. A1 Morano, F. A1 Trarbach, T. A1 Karthaus, M. A1 Lonardi, S. A1 Fruehauf, S. A1 Cremolini, C. A1 Graeven, U. A1 Bittoni, A. A1 Mueller, L. A1 Bianchi, A. Sartore A1 Aranda, E. A1 Boige, V. A1 Stintzing, S. A1 Di Bartolomeo, M. A1 Koenig, A. A1 Pietrantonio, F. A1 Modest, D. K1 Panitumumab K1 Bevacizumab K1 Proto-oncogene proteins B-raf AB Background: In metastatic colorectal cancer (mCRC), after a first-line induction with doublet/triplet chemotherapy plus bevacizumab, fluoropyrimidine+bevacizumab is the recommended maintenance option. The combination of anti-EGFR agents and chemotherapy is a guideline-endorsed first-line option for RAS/BRAF wild-type (wt) mCRC patients, but the optimal maintenance schedule has not been defined, yet. The Valentino trial showed that, after 4-month FOLFOX+panitumumab induction, singleagent panitumumab induced inferior progression-free survival (PFS) than FUFA+panitumumab, though slightly reducing toxicity. The Panama study demonstrated that, after 3-month FOLFOX+panitumumab induction, FUFA+panitumumab induced a significantly superior PFS than FUFA alone. PB Elsevier SN 0923-7534 YR 2022 FD 2022-06-01 LK http://hdl.handle.net/10668/21914 UL http://hdl.handle.net/10668/21914 LA en NO Raimondi A, Morano F, Trarbach T, Karthaus M, Lonardi S, Fruehauf S, et al. SO-21 Optimal maintenance treatment strategy following an anti-EGFR-based first-line induction therapy in patients with RAS wild type metastatic colorectal cancer: An individual patient data pooled analysis of clinical trials. Annals Of Oncology [Internet]. 1 de junio de 2022;33:S366 DS RISalud RD Apr 14, 2025