Laboratory for Molecular Diagnostics
Center for Nephrology and Metabolic Disorders
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Pseudohypoparathyroidism type IB

Pseudohypoparathyroidism type IB (PHPIB) is characterized by renal resistance to parathyroid hormone without other endocrine or renal abnormalities.

Clinical Findings

Clinical symptoms of pseudohypoparathyroidism typ 1 B are hypocalcemia, hyperphosphatemia, increased serum PTH, and a decreased response of urinary cAMP to administered PTH.

Pathogenesis

Pseudohypoparathyroidism type 1b is associated with a paternal-specific imprinting pattern on both alleles.

Systematic

Pseudohypoparathyroidism
Albright hereditary osteodystrophy
Pseudohypoparathyroidism type IB
GNAS
STX16
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