In the EAP, 43 mKRAS mCRC pts with prior irinotecan treatment received Onv+FOLFIRI/bev. As of 10-Mar-2022, median PFS was 4 mos (range 0.4-17.4), with 14 (33%) of pts benefiting for >6 months. Five pts remained on treatment at data cutoff for 9.3 to 17.4 mo. Of the 32 pts evaluable for KRAS MAF changes, pts with a decrease in KRAS MAF of ≥90% (n=11) had a significantly longer PFS of 11.1 mo (CI 5.5-NR)...Preclinical and clinical data support that Onv can overcome irinotecan-resistance in mRAS CRC.