This book provides a comprehensive overview of the genetic basis underlying endocrine diseases. It covers both the molecular and clinical consequences of these genetic defects, as well as the relevance for clinical care, highlighting issues of genetic counseling. Several endocrine diseases have a genetic background, and contemporary research in the field plays a crucial role in the clinical care of endocrine diseases. In recent years, there have been major developments in our understanding of the genetic basis of endocrine diseases. Several novel genes and mutations predisposing individuals to monogenic endocrine diseases have been discovered, and with the advent of next generation sequencing, a huge amount of