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(A) First-line PFS stratified by KRAS mutational status in patients with first-line oxaliplatin-based regimens. (B) First-line PFS stratified by KRAS mutational status in patients with first-line irinotecan-based regimens. (C) OS stratified by KRAS mutational status in patients with first-line oxaliplatin-based regimens. (D) OS stratified by KRAS mutational status in patients with first-line irinotecan-based regimens.
