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McCune–Albright syndrome is a complex genetic disorder affecting the bone, skin and endocrine systems. It is a mosaic disease arising from somatic activating mutations in GNAS , which encodes the alpha-subunit of the G s heterotrimeric G protein .
Albright's hereditary osteodystrophy is a form of osteodystrophy, [4] and is classified as the phenotype of pseudohypoparathyroidism type 1A; this is a condition in which the body does not respond to parathyroid hormone.
Managing endocrinopathies is a critical component of management in FD. All patients with fibrous dysplasia should be evaluated and treated for endocrine diseases associated with McCune–Albright syndrome. In particular untreated growth hormone excess may worsen craniofacial fibrous dysplasia and increase the risk of blindness. [23]
Moreover, he also worked on identifying a gain-of-function mutation in the GNAS gene as the basis for constitutive activation of adenylyl cyclase in the McCune-Albright syndrome and confirmed that the unusual distribution of the endocrine, cutaneous, and skeletal lesions in the syndrome is the result of a postzygotic mosaicism.
Café au lait spots are often harmless but may be associated with syndromes such as neurofibromatosis type 1 and McCune–Albright syndrome. [3] Café au lait lesions with rough borders ("coast of Maine") may be seen in McCune–Albright syndrome.
Multiple Endocrine Neoplasia type 1 (MEN1) is a rare hereditary endocrine cancer syndrome characterized primarily by tumors of the parathyroid glands (95% of cases), endocrine gastroenteropancreatic (GEP) tract (30–80% of cases), and anterior pituitary (15–90% of cases). [19]
Pseudopseudohypoparathyroidism (PPHP) is an inherited disorder, [1] named for its similarity to pseudohypoparathyroidism in presentation. It is more properly Albright hereditary osteodystrophy, although without resistance of parathyroid hormone (PTH), as frequently seen in that affliction.
Donovan James McCune (June 24, 1902 – April 11, 1976) was an American pediatrician who conducted pioneering research on McCune–Albright syndrome. [1] He was also a collector of rare books, including many incunabula , and a devotee of letterpress printing .