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Generalized osteodystrophy associated with heterozygous inactivating mutation(s) in the GNAS gene encoding guanine nucleotide-binding protein, alpha-stimulating (Gs-alpha), characterized by short stature, subcutaneous ossification, and skeletal anomalies. If the mutation is on the paternal allele, hormone resistance is absent. If the mutation is on the maternal allele, hormone resistance is present.
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