CTCs based on the immunostaining of CD45, DAPI, CK, and FISH‐CEP8 have also been found to be associated with OS; a concentration of ≥3 CTCs/7.5 ml was an independent prognostic factor in patients with pancreatic cancer (Gao et al., 2016). The gene discussed is PTPRC; the disease is familial pancreatic carcinoma.