Merkel Cell Carcinoma, also known as cutaneous neuroendocrine carcinoma, is related to skin carcinoma and skin benign neoplasm. An important gene associated with Merkel Cell Carcinoma is KRT20 (Keratin 20), and among its related pathways/superpathways are Signal Transduction and Phospholipase-C Pathway. The drugs Atezolizumab and Pembrolizumab have been mentioned in the context of this disorder. Affiliated tissues include skin and lymph node, and related phenotypes are merkel cell skin cancer and cellular immunodeficiency