Patients with pretreated mCRC were centrally prescreened for MSS status and MGMT silencing...Eligible patients received two priming cycles of oral temozolomide...combination with ipilimumab...and nivolumab...After a median follow-up of 23.1 months (interquartile range, 14.9-24.6 months), 8-month PFS rate was 36%. Median PFS and overall survival were 7.0 and 18.4 months, respectively, and overall response rate was 45%.