Article
A new deletion ablating NESP55 causes loss of maternal imprint of A/B GNAS and autosomal dominant pseudohypoparathyroidism type Ib.
The Journal of clinical endocrinology and metabolism - 1 May 2012
Richard Nicolas, Abeguilé Genevieve, Coudray Nadia, Mittre Hervé, Gruchy Nicolas, Andrieux Joris, Cathebras Pascal, Kottler Marie-Laure
Abstract excerpt
BACKGROUND: Patients with pseudohypoparathyroidism type Ib (PHP-1b) develop resistance toward PTH, leading to hypocalcemia and hyperphosphatemia. PHP-1b is an imprinted human disorder associated with methylation changes at one or several differentially methylated regions at the GNAS locus. This complex locus gives rise to several different transcripts with different patterns of imprinted expression depending on...
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