Below is an instruction from Human. Write a response.
    ### Instruction:
    what research (or clinical trials) is being done for Liver (Hepatocellular) Cancer ?
    ### Response:
    Cancer prevention clinical trials are used to study ways to prevent cancer.
                    Cancer prevention clinical trials are used to study ways to lower the risk of developing certain types of cancer. Some cancer prevention trials are conducted with healthy people who have not had cancer but who have an increased risk for cancer.
    