Preferred Label : Pseudohypoparathyroidism, type II;
Symbol : PHP2;
CISMeF acronym : PHP2;
Type : Phenotype or locus, molecular basis unknown;
Alternative titles and symbols : Php II;
Description : Pseudohypoparathyroidism (PHP) is a term applied to a heterogeneous group of disorders
whose common feature is resistance to parathyroid hormone (PTH; 168450). PHP type
II is characterized by a normal cAMP response to PTH infusion, but a deficient phosphaturic
response, indicating a defect distal to cAMP generation in renal cells. The clinical
features of Albright hereditary osteodystrophy (AHO; see 103580) are not present in
PHP II (Mantovani and Spada, 2006). For a general phenotypic description, classification,
and a discussion of molecular genetics of pseudohypoparathyroidism, see PHP1A (103580).;
Inheritance : Isolated cases;
Laboratory abnormalities : Hypocalcemia; Hyperphosphatemia; Elevated serum parathyroid hormone (PTH) level; Normal or increased urinary cyclic AMP response to PTH administration;