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Difference between revisions of "Ependymoma"
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→IHC: Update
Jensflorian (talk | contribs) |
Jensflorian (talk | contribs) (→IHC: Update) |
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*[[IDH-1]]-ve. | *[[IDH-1]]-ve. | ||
*EMA (dots and rings).<ref>{{Cite journal | last1 = Hasselblatt | first1 = M. | last2 = Paulus | first2 = W. | title = Sensitivity and specificity of epithelial membrane antigen staining patterns in ependymomas. | journal = Acta Neuropathol | volume = 106 | issue = 4 | pages = 385-8 | month = Oct | year = 2003 | doi = 10.1007/s00401-003-0752-8 | PMID = 12898159 }}</ref> | *EMA (dots and rings).<ref>{{Cite journal | last1 = Hasselblatt | first1 = M. | last2 = Paulus | first2 = W. | title = Sensitivity and specificity of epithelial membrane antigen staining patterns in ependymomas. | journal = Acta Neuropathol | volume = 106 | issue = 4 | pages = 385-8 | month = Oct | year = 2003 | doi = 10.1007/s00401-003-0752-8 | PMID = 12898159 }}</ref> | ||
**Widespread and strong EMA expression is indicative of YAP1-fused ependymoma. | |||
*Olig2-ve.<ref>{{Cite journal | last1 = Švajdler | first1 = M. | last2 = Rychlý | first2 = B. | last3 = Mezencev | first3 = R. | last4 = Fröhlichová | first4 = L. | last5 = Bednárová | first5 = A. | last6 = Pataky | first6 = F. | last7 = Daum | first7 = O. | title = SOX10 and Olig2 as negative markers for the diagnosis of ependymomas: An immunohistochemical study of 98 glial tumors. | journal = Histol Histopathol | volume = 31 | issue = 1 | pages = 95-102 | month = Jan | year = 2016 | doi = 10.14670/HH-11-654 | PMID = 26287936 }}</ref> | *Olig2-ve.<ref>{{Cite journal | last1 = Švajdler | first1 = M. | last2 = Rychlý | first2 = B. | last3 = Mezencev | first3 = R. | last4 = Fröhlichová | first4 = L. | last5 = Bednárová | first5 = A. | last6 = Pataky | first6 = F. | last7 = Daum | first7 = O. | title = SOX10 and Olig2 as negative markers for the diagnosis of ependymomas: An immunohistochemical study of 98 glial tumors. | journal = Histol Histopathol | volume = 31 | issue = 1 | pages = 95-102 | month = Jan | year = 2016 | doi = 10.14670/HH-11-654 | PMID = 26287936 }}</ref> | ||
* | *H3K27me3 nuclear loss in Posterior fossa group A ependymoma (nuclear loss is diagnostic).<ref>{{Cite journal | last1 = Panwalkar | first1 = P. | last2 = Clark | first2 = J. | last3 = Ramaswamy | first3 = V. | last4 = Hawes | first4 = D. | last5 = Yang | first5 = F. | last6 = Dunham | first6 = C. | last7 = Yip | first7 = S. | last8 = Hukin | first8 = J. | last9 = Sun | first9 = Y. | title = Immunohistochemical analysis of H3K27me3 demonstrates global reduction in group-A childhood posterior fossa ependymoma and is a powerful predictor of outcome. | journal = Acta Neuropathol | volume = | issue = | pages = | month = Jul | year = 2017 | doi = 10.1007/s00401-017-1752-4 | PMID = 28733933 }}</ref> | ||
*L1CAM in supratentorial tumors (expression indicates | *L1CAM in supratentorial tumors (expression indicates ZFTA fusion).<ref>{{Cite journal | last1 = Parker | first1 = M. | last2 = Mohankumar | first2 = KM. | last3 = Punchihewa | first3 = C. | last4 = Weinlich | first4 = R. | last5 = Dalton | first5 = JD. | last6 = Li | first6 = Y. | last7 = Lee | first7 = R. | last8 = Tatevossian | first8 = RG. | last9 = Phoenix | first9 = TN. | title = C11orf95-RELA fusions drive oncogenic NF-κB signalling in ependymoma. | journal = Nature | volume = 506 | issue = 7489 | pages = 451-5 | month = Feb | year = 2014 | doi = 10.1038/nature13109 | PMID = 24553141 }}</ref> | ||
*p65 nuclear +ve in ZFTA-fused ependymoma. | |||
==Molecular== | ==Molecular== | ||