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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 .
The disorder bears the name of Fuller Albright, who characterized it in 1942. [12] He was also responsible for naming it "Sebright bantam syndrome," after the Sebright bantam chicken, which demonstrates an analogous hormone insensitivity. Much less commonly, the term Martin-Albright syndrome is used, this refers to Eric Martin. [13]
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]
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.
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. [9]
McCune–Albright syndrome includes polyostotic fibrous dysplasia as part of its presentation. [4] When polyostotic fibrous dysplasia manifests in the long bones, limping results; when it manifests in the face, asymmetric growth of the face can result. [3] One treatment that has been used is bisphosphonates. [5]
McCune–Albright syndrome; Central precocious puberty can also be caused by brain tumors, infection (most commonly tuberculous meningitis, especially in developing countries), trauma, hydrocephalus, and Angelman syndrome. [7]
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