A C115326 Pearson Syndrome Pearson Syndrome Pearson Marrow-Pancreas Syndrome A rare syndrome with poor prognosis caused by single, large deletions of mitochondrial DNA. It usually presents in infancy with bone marrow failure, anemia, neutropenia, thrombocytopenia, vacuolation of the hematopoietic precursor cells, lactic acidosis, and fibrosis and acinar atrophy of the pancreas that results in malabsorption and chronic diarrhea. Approximately half of the patients die in infancy or early childhood.|The most severe syndrome in the spectrum of single, large-scale mitochondrial DNA (mtDNA) deletions (SLSMDs), usually presenting shortly after birth with sideroblastic anemia. The condition is often associated with exocrine pancreas insufficiency and multi-system dysfunction including diabetes mellitus, cortisol deficiency, hypothyroidism, hypoparathyroidism, and growth hormone deficiency. Commonly associated clinical findings include the following: failure to thrive, hypotonia, ptosis, ophthalmoparesis, and renal disease. The most severe syndrome in the spectrum of single, large-scale mitochondrial DNA (mtDNA) deletions (SLSMDs), usually presenting shortly after birth with sideroblastic anemia. The condition is often associated with exocrine pancreas insufficiency and multi-system dysfunction including diabetes mellitus, cortisol deficiency, hypothyroidism, hypoparathyroidism, and growth hormone deficiency. Commonly associated clinical findings include the following: failure to thrive, hypotonia, ptosis, ophthalmoparesis, and renal disease. C28193 Syndrome C118467 Pediatric Endocrine Terminology A C85237 47,XYY Syndrome 47,XYY Syndrome 47,XYY|XYY Syndrome A condition caused by the presence of an extra Y chromosome resulting in 47,XYY karyotype in an individual with male phenotype. The condition is characterized by tall stature, increased risk of learning disabilities, and delayed development of speech and language. Testicular function and size are normal. A condition caused by the presence of an extra Y chromosome resulting in 47,XYY karyotype in an individual with male phenotype. The condition is characterized by tall stature, increased risk of learning disabilities, and delayed development of speech and language. Testicular function and size are normal. C28193 Syndrome C118467 Pediatric Endocrine Terminology D C123018 Renal Cysts and Diabetes Syndrome|Hepatocyte Nuclear Factor 1-Beta-Associated Monogenic Diabetes Hepatocyte Nuclear Factor 1-Beta-Associated Monogenic Diabetes RCAD Syndrome|Renal Cysts and Diabetes Syndrome|RCAD Monogenic diabetes caused by inactivating mutation(s) in the gene HNF1B, encoding hepatocyte nuclear factor 1-beta. In addition to diabetes, this condition may be associated with renal cysts and urogenital anomalies. Homozygous HNF1B mutations result in permanent neonatal diabetes. Monogenic diabetes caused by inactivating mutation(s) in the gene HNF1B, encoding hepatocyte nuclear factor 1-beta. In addition to diabetes, this condition may be associated with renal cysts and urogenital anomalies. Homozygous HNF1B mutations result in permanent neonatal diabetes. C129739 Monogenic Diabetes C28193 Syndrome C118467 Pediatric Endocrine Terminology Maturity Onset Diabetes of the Young, Type 5 D C129719 47,XYY Syndrome 47,XYY Syndrome 47,XYY|XYY Syndrome A condition caused by the presence of an extra Y chromosome resulting in 47,XYY karyotype in an individual with male phenotype. The condition is characterized by tall stature, increased risk of learning disabilities, and delayed development of speech and language. Testicular function and size are normal. A condition caused by the presence of an extra Y chromosome resulting in 47,XYY karyotype in an individual with male phenotype. The condition is characterized by tall stature, increased risk of learning disabilities, and delayed development of speech and language. Testicular function and size are normal. C28193 Syndrome C118467 Pediatric Endocrine Terminology D C129743 Hepatocyte Nuclear Factor 1-Beta-Associated Monogenic Diabetes Hepatocyte Nuclear Factor 1-Beta-Associated Monogenic Diabetes RCAD|Renal Cysts and Diabetes Syndrome Monogenic diabetes caused by inactivating mutation(s) in the gene HNF1B, encoding hepatocyte nuclear factor 1-beta. In addition to diabetes, this condition may be associated with renal cysts and urogenital anomalies. Homozygous HNF1B mutations result in permanent neonatal diabetes. Monogenic diabetes caused by inactivating mutation(s) in the gene HNF1B, encoding hepatocyte nuclear factor 1-beta. In addition to diabetes, this condition may be associated with renal cysts and urogenital anomalies. Homozygous HNF1B mutations result in permanent neonatal diabetes. C129739 Monogenic Diabetes C118467 Pediatric Endocrine Terminology Maturity Onset Diabetes of the Young, Type 5 D C130999 Pearson Syndrome Pearson Syndrome Pearson Marrow-Pancreas Syndrome The most severe syndrome in the spectrum of single, large-scale mitochondrial DNA (mtDNA) deletions (SLSMDs), usually presenting shortly after birth with sideroblastic anemia. The condition is often associated with exocrine pancreas insufficiency and multi-system dysfunction including diabetes mellitus, cortisol deficiency, hypothyroidism, hypoparathyroidism, and growth hormone deficiency. Commonly associated clinical findings include the following: failure to thrive, hypotonia, ptosis, ophthalmoparesis, and renal disease. The most severe syndrome in the spectrum of single, large-scale mitochondrial DNA (mtDNA) deletions (SLSMDs), usually presenting shortly after birth with sideroblastic anemia. The condition is often associated with exocrine pancreas insufficiency and multi-system dysfunction including diabetes mellitus, cortisol deficiency, hypothyroidism, hypoparathyroidism, and growth hormone deficiency. Commonly associated clinical findings include the following: failure to thrive, hypotonia, ptosis, ophthalmoparesis, and renal disease. C28193 Syndrome C118467 Pediatric Endocrine Terminology D C131858 Hypogonadotropic Hypogonadism with Anosmia Hypogonadotropic Hypogonadism with Anosmia Hypogonadotropic hypogonadism in association with an impaired sense of smell. Hypogonadotropic hypogonadism in association with an impaired sense of smell. C9227 Hypogonadism C118467 Pediatric Endocrine Terminology