In the article “Potential Role for Retinoic Acid in Patients with Cushing's Disease” by Francesca Pecori Giraldi, Alberto Giacinto Ambrogio, Massimiliano Andrioli, Francesca Sanguin, Iannis Karamouzis, Salvatore Maria Corsello, Carla Scaroni, Emanuela Arvat, Alfredo Pontercorvi, and Francesco Cavagnini (J Clin Endocrinol Metab 97:3577–3583, 2012; doi: 10.1210/jc.2012-2328), the name before the last “Pontercorvi A” is misspelled: the correct name is “Pontecorvi A”. The authors apologize for the error.