RNA expression profiling of normal and tumor tissues has shown PTN to be consistently expressed in glioblastoma (Wang, 2020); however, several studies have indicated PTN is elevated in other cancers such as breast (Ma et al., 2017), lung (Wang and Wang, 2015), and pancreatic cancer (Yao et al., 2017). The gene discussed is PTN; the disease is familial pancreatic carcinoma.