FIGURE 1 from Estrogen Receptor Mutations as Novel Targets for Immunotherapy in Metastatic Estrogen Receptor–positive Breast Cancer

Peptides bind to HLA-A*0201. T2 cells were pulsed with indicated peptide for 4 hours and surface HLA-A*0201 was stained. MFI of pulsed T2 cells were normalized to experimentally matched non-pulsed T2 cells, and data expressed as fold change in MFI. Dashed horizontal line indicates non-pulsed T2 HLA-A*0201. FLU peptide was used as a positive control HLA-A*0201 peptide known to bind with high affinity. Data represent three independent experiments performed in triplicate. Statistical significance was determined via comparison of pulsed MFI versus non-pulsed raw MFI using unpaired Student t test. ***, P < 0.001.