In the article titled “Gastroenteropancreatic Neuroendocrine Neoplasia Characterization in Portugal: Results from the NETs Study Group of the Portuguese Society of Endocrinology, Diabetes and Metabolism” [1], the affiliation for I. Claro was labeled incorrectly. The correct affiliation of the author I. Claro is Instituto Português de Oncologia de Lisboa, Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal.