MUM1 belongs to Protein coding gene. It is expressed as Multiple myeloma oncogene-1 meaning MUM-1. MUM 1 is known as Melanoma Associated Antigen (Mutated) 1. Many people get affected with MUM1 such as Melanoma. MUM1 gene encoding shows that it is one of the causes of chromosomal abnormalities and DNA damages. The MUM 1 protein test is conducted using tissue microarrays and immunohistochemistry. The method used is called Immunohistochemical Stain (IHC) MUM 1 protein is, therefore, a 50 kDa protein that is encoded by Mum1 gene. The expression of MUM 1 is derived from the antigen-stimulated B cells that can differentiate towards plasma cells.