Anus Cancer, also known as anal cancer, is related to anal canal carcinoma and human papillomavirus infectious disease, and has symptoms including pruritus ani, abdominal pain and constipation. An important gene associated with Anus Cancer is CD4 (CD4 Molecule), and among its related pathways/superpathways are Class I MHC mediated antigen processing and presentation and Signaling by Receptor Tyrosine Kinases. The drugs Octreotide and Ipilimumab have been mentioned in the context of this disorder. Affiliated tissues include lymph node and skin, and related phenotypes are Decreased viability and homeostasis/metabolism