NCIt related terms : Pseudohypoparathyroidism Type 1b;
Alternative definition : NICHD: Parathyroid hormone resistance caused by defects in methylation in the GNAS
gene that cause loss of expression of Gs-alpha from the maternal allele in renal tissue,
resulting in decreased phosphate excretion and increased calcium excretion. Individuals
with this condition may also have brachydactyly and partial resistance to thyroid-stimulating
hormone.;