Hepatitis B, also known as chronic hepatitis b, is related to hepatitis d and hepatitis, and has symptoms including fever, abdominal pain and constipation. An important gene associated with Hepatitis B is IFNGR1 (Interferon Gamma Receptor 1), and among its related pathways/superpathways are Cytokine Signaling in Immune system and Antiviral mechanism by IFN-stimulated genes. The drugs Aluminium phosphate and Tacrolimus have been mentioned in the context of this disorder. Affiliated tissues include liver and t cells, and related phenotypes are neoplasm and mortality/aging