Endocrine Abstracts

Introduction: Heterozygous inactivating mutations in the maternal allele of the GNAS gene typically result in pseudohypoparathyroidism (PHP). GNAS variants were recently described in 1% of patients, not known to have PHP, in the UK Genetics of Obesity cohort, resulting in reduced MC4R signalling and variable effects on PTH-R and GHRH-R signalling.Methods: NGS (Cambridge Obesity Gene Panel) and in vitro functiona...

We present 3 children in a single centre with Myhre syndrome (MS) due to a heterozygous SMAD4 Ile500val mutation. Consistent features were brachydactyly, joint restriction, muscular hypertrophy, genital abnormalities, conductive hearing loss and developmental delay. SGA and height were variable. Diagnosis was made by next generation sequencing in patients 1 and 3 and on the skeletal survey in patient 2. Retrospectively, features of Myhre syndrome were present on the s...