Increased levels of CgA have been associated with Neuroendocrine Neoplasms (NENs) from many different sites, including the gastroenteropancreatic tract (Diez et al. 2013), the bronchopulmonary system (Caplin et al. 2015; Pericleous et al. 2018), as well as pheochromocytomas, paragangliomas, medullary thyroid carcinoma, as part of multiple endocrine neoplasia type 1 (MEN-1), Von-Hippel Lindau (VHL) syndrome (Cives and Strosberg 2018; Bottoni et al. 2015), and others. This evidence concerns the gene CGA and multiple endocrine neoplasia type 1.