CD99 [Neurosurgery Wiki]

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=====CD99=====
CD99 [[antigen]] (Cluster of differentiation 99), also known as MIC2 or single-chain type-1 glycoprotein, is a heavily O-glycosylated [[transmembrane protein]] that is encoded by the CD99 gene in humans.

The protein has a mass of 32 kD. Unusually for a gene present on the X chromosome, the CD99 gene does not undergo X inactivation, and it was the first such pseudoautosomal gene to be discovered in humans.

An immunohistochemical study yielded positive results for CD34, CD99, and Bcl-2 and negative results for EMA, GFAP, and S100 in two Cases of [[Primary Intracranial Solitary Fibrous Tumor]]
((Kikuchi A, Fujita T, Takahashi Y, Yokosako S, Yoshimura C, Akagawa H,
Fujibayashi M, Kubo O, Onda H, Kasuya H. [Two Cases of Primary Intracranial
Solitary Fibrous Tumor:Genetic Examination of <i>NAB2-STAT6</i> Fusion and Its
Association with Hemangiopericytoma]. No Shinkei Geka. 2015 Jul;43(7):641-8. doi:
10.11477/mf.1436203090. Japanese. PubMed PMID: 26136329.)).