How, if at all, are you employing ctDNA in the management of patients with colon cancer?  

This is a great question and one that has been a huge point of extensive discussion with a lot of my patients and colleagues. I think there is a lot of variation at this time amongst providers in the implementation of this test, but I will provide my general approach and welcome other approaches as ...

I discuss ctDNA testing for patients with stage II-IV colorectal cancer who have been treated definitively.

I routinely recommend ctDNA testing for patients with high-risk stage II and stage III colon cancer after surgery. Outside of clinical trials, I use ctDNA results to inform management—extending therapy to six months if positive and incorporating ctDNA testing during surveillance between imagin...