Axitinib Monotherapy With Early Dynamic Contrast Enhanced Ultrasound Monitoring in Chemorefractory Third Line Metastatic Colorectal Cancer

"* All patients randomised to this arm will receive 3mg BD, and increased at 2 weeks to 5mg BD~* Outpatient monitoring at 2 week intervals for a minimum of 8 weeks, with 2 weekly liver contrast ultrasound for assessment of differential blood supply (CEHPI)~* At 8 weeks, after tumour CT RECIST assessments, responders will continue monotherapy. In non-responders, those with disease progression, monotherapy can be continued if patient chooses to continue and if tolerated"

"* All patients receiving placebo will receive tablets to take BD~* Outpatient monitoring at 2 week intervals for a minimum of 8 weeks, with 2 weekly liver contrast ultrasound for assessment of differential blood supply (CEHPI)"