Detection of Wilms' Tumor Antigen–Specific CTL in Tumor-Draining Lymph Nodes of Patients with Early Breast Cancer

Abstract
Purpose: The Wilms' tumor antigen (WT1) is overexpressed in ∼90% of breast tumors and, thus, is a potential target antigen for the immunotherapy of breast cancer. We have tested the working hypotheses that WT1 can be immunogenic in patients with breast cancer and can stimulate CTL of sufficient avidity to kill tumor cells.