ESR1 and neoplasm: The proteins of the pan‐tumour panel that were found to be above the threshold included aryl hydrocarbon receptor (AHR), premelanosome protein 17 (PMEL17), interferon gamma receptor (IFNGR), human epidermal growth factor receptor 2 (HER2), estrogen receptor (ER), Ki‐67, PanCK, EpCAM, CD31, CD45 and ribosomal protein 6.