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Pseudohypoparathyroidism type 1B
Other Names for this Disease
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parathyroid hormone (PTH) and other hormones such as thyroid-stimulating hormone (TSH). This condition is very similar to hypoparathyroidism (in which not enough PTH is produced), causing low calcium levels and high phosphate levels in the blood. Resistance to PTH in individuals with type 1B may be limited to the kidneys. The severity of the condition can vary considerably among affected individuals, even within the same family. Most individuals do not have an abnormal physical appearance and usually do not exhibit other endocrine abnormalities. In some cases, PHP1B is inherited in an autosomal dominant manner and is caused by mutations in either the GNAS or STX16 genes. In other cases, it has been shown to be sporadic (not inherited), caused by imprinting defects in the GNAS gene. The goals of treatment are to correct the calcium deficiency and prevent complications.Pseudohypoparathyroidism type 1B (PHP1B) is a genetic disorder that is caused by a lack of response (resistance) to
Last updated: 7/8/2013
- Topiwala S. Pseudohypoparathyroidism. MedlinePlus. July 2012; http://www.nlm.nih.gov/medlineplus/ency/article/000364.htm. Accessed 10/17/2012.
- Pseudohypoparathyroidism type 1B . Online Mendelian Inheritance of Man (OMIM). June 2010; http://omim.org/entry/603233. Accessed 10/7/2011.
- Mini R Abraham. Pseudohypoparathyroidism. Medscape Reference. April 23, 2013; http://emedicine.medscape.com/article/124836-overview. Accessed 7/8/2013.
- A. Dixit et al. Pseudohypoparathyroidism type 1b due to paternal uniparental disomy of chromosome 20q. The Journal of clinical endocrinology and metabolism. January 2013; 98(1):E103-E108 .
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- The Online Mendelian Inheritance in Man (OMIM) database contains genetics resources that discuss Pseudohypoparathyroidism type 1B. Click on the link to go to OMIM and review these resources.
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