In 2010, the WHO adopted the classification proposed by the European Neuroendocrine Tumor Society (ENETS) to unify the names as neuroendocrine tumors, and classified them as grade one (G1), grade two (G2), and grade three (G3) using the mitotic count and Ki-67 index [6,7,8]. The gene discussed is MKI67; the disease is neuroendocrine neoplasm.