The Greten lab studies the tumor microenvironment in the liver in the context of Hepatocellular Carcinoma, Cholangiocarcinoma, and liver metastasis and studies how exogenous factors such as diet and the gut microbiome may affect immune responses in the liver. Areas of expertise include: 1) cancer immunotherapy 2) gastrointestinal cancers 3) clinical trials 4) translational research 5) microbiome 6) immune modulation.