Pseudohypoparathyroidism type IB (PHPIB) is characterized by renal resistance to parathyroid hormone without other endocrine or renal abnormalities.
Clinical symptoms of pseudohypoparathyroidism typ 1 B are hypocalcemia, hyperphosphatemia, increased serum PTH, and a decreased response of urinary cAMP to administered PTH.
Pseudohypoparathyroidism type 1b is associated with a paternal-specific imprinting pattern on both alleles.
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