Dendritic Cell Vaccination in Patients With Advanced Colorectal Cancer

Dendritic cells loaded with tumor antigens induce cytotoxic T-cells which have been proved capable of killing both melanoma and breast cancer cells. Melanoma and colorectal cancer cells express some common antigens. Hence it is possible to use melanoma lysate to load the dendritic cells with tumor antigens similar to the antigens expressed by the patients' colorectal cancer cells. The patient receives 10 vaccinations with 14 days between each. The parameters for effect are changes in tumor/metastasis size measured with computed tomography (CT), decrease in serum concentration of carcinoembryonic antigen (CEA), performance status measured by the World Health Organization (WHO) criteria, and Quality of Life.