what do we do now? what's our next step? how do we battle this? >> the cancer had spread to her lymph nodes, her bones, her liver. the treatment was grueling. >> i had two surgeries to remove lymph nodes. 32 treatments of radiation and two weeks of interferon treatments. >> and none of it worked. the cancer was still there. her doctor was out of options for her. so he sent her to the vanderbilt-ingram cancer center. dr. jeff saussman is running a clinical trial that tests an experimental drug that targets a genetic mutation in her tumor that is making her cancer grow. >> that mutation actually triggers the tumor cell to multiply. >> the mutation called braf is a protein found in half of all melanoma patients. >> we have a drug or a molecule that can block the function of that protein.