In the Original Investigation titled “Endocrine Late Effects in Survivors of Cancer in Adolescence and Young Adulthood: A Danish Population-Based Cohort Study,”1 published June 29, 2018, there was an error in the wording of the last sentence of the first paragraph in the Introduction section. The sentence should have read: “Survivors of cancer in adolescence and young adulthood, their relatives, and the treating clinicians also require information on the long-term outcomes of treatment.” This article was corrected online.