You need to know this when researching the treatment options. A clinical trial is an option for patients with liver cancer.
Clinical trials are research studies designed to find more effective treatment.
In treatment studies for cancer of the liver, doctors are studying new anticancer drugs and drug combinations. They are also studying new ways to give chemotherapy, such as putting drugs directly into the liver. I suggest she call her state health department or a hospital social worker to explore the options in her state of residence. The best support as a friend is to be an active listener. You can help her gather all the information available about liver cancer and the treatment options.