This issue of Endocrinology and Metabolism Clinics, guest edited by Dr. Constantine A. Stratakis, is devoted to Genetics in Endocrine Disorders. Articles in this issue include: Genetics of Short Stature; Genetics of Diabetes Insipidus; Pituitary Hypoplasia; Pituitary Tumor Genetics and Associated Syndromes; Defects of Thyroid Hormone Synthesis; Molecular Genetics of Thyroid Cancer; Genetics of Hyperparathyroidism Including Parathyroid Cancer; Genetics of Adrenocortical Development and Tumors; Genetics of Congenital Adrenal Hyperplasia; Genetics of Pheochromocytomas and Related Conditions; Genetics of Multiple Endocrine Neoplasia Type 1 and Type 2 Syndromes; Genetics of Hypogonadotrophic Hypogonadism and Kallman Syndrome; Disorders of Sex Development; Genetics of Lipodystrophy; and PTEN-Spectrum Disorders.