Clinical Pediatric Endocrinology (CPE) is the official Journal of The Japanese Society for Pediatric Endocrinology, and publishes articles on the understanding that they contribute to the progress of the field of clinical endocrinology and metabolism applicable from infancy through adolescence. CPE accepts both original clinical investigations (‘Original Article’) and ‘Case Report’ of significance to the field of pediatric endocrinology and metabolism. Authors may also submit a ‘Short Communication’ requiring rapid publication, ‘Mutation-in-Brief’ reporting a novel mutation(s) together with a brief clinical background as well as the uncharacterized polymorphism, and ‘Letters to the Editor’ pertaining to articles already published in CPE. Relatively short reviews on a current topic may appear as a ‘Review’, and clinical guidelines as a ‘Special Report’.