EPCAM and posterior cortical atrophy: For example, CellSearch has US Food and Drug Administration (FDA) clearance for CTC quantification in patients with metastasic prostate cancer (mPCA) or MagSweeper only isolate EpCAM-positive CTCs [22], while other technologies, such as AdnaTest, already include epithelial–mesenchymal transition (EMT) markers to isolate CTCs from patients with PCa [23].