EPCAM and breast cancer: To this end, we analyzed mesothelial‐cell‐enriched (EpCAM‐ and CD45‐negative) fractions from tumor‐free omentum regions of three different OC‐patients by targeted single‐cell RNA sequencing (scRNA‐Seq) (Figure 4A), focusing on IL‐17A and TNF regulated genes combined with genes regulated in malignancy (Onco‐BC), as well as markers distinguishing different cell populations (Table S3).