The purpose of this screening step is to perform a genetic test on your colorectal cancer tumor sample to see if it has a specific genetic mutation called BRAF. BRAF is a human gene that makes a protein called B-raf. This protein is involved in sending signals to the cells which direct cell growth. BRAF tumor testing is common for this type of cancer. The performance of the test is not part of the research question in this study. If your tissue has a BRAF mutation, you will be eligible to participate in the next part of the study.
