Prospective Translational Study Investigating Molecular Predictors of Resistance and Response to Regorafenib Monotherapy

"Patients meeting all of the inclusion criteria and none of the exclusion criteria will receive regorafenib 160 mg orally (po) od for 3 weeks of every 4-week cycle. Each cycle will comprise 3 weeks of treatment followed by 1 week without treatment, hereafter described as 3 weeks on/1 week off. Each 160-mg dose will include four regorafenib 40-mg tablets."