INSM1 and neuroendocrine carcinoma: The aberrant expression of INSM1 could be found in various cancers, such as head and neck tumors (Rooper, Bishop, & Westra, 2018), neuroendocrine carcinoma (Kuji et al., 2017), Merkel cell carcinoma (Lilo, Chen, & LeBlanc, 2018), and small cell lung cancer (McColl et al., 2017).