Used in immunological research and drug development, particularly in cancer studies due to its role in tumor-associated antigen expression. Commonly employed in ELISA, flow cytometry, and immunoassay development to detect anti-MUC1 antibodies or study immune responses. The Fc tag enables easy detection and purification using anti-Fc reagents and facilitates dimerization for enhanced binding studies. Also utilized in vaccine development targeting MUC1-overexpressing cancers such as breast, pancreatic, and ovarian carcinomas.