A total of 91 recruited cancer patients had performed CTC detection by EpCAM and CSV antibodies at same time, including 20 LC, 8 CRC, 20 PDAC, 10 GC, 10 BCa, 4 HCC, 8 CC, 4 EC, 4 OC and 3 sarcoma. The gene discussed is EPCAM; the disease is sarcoma.