Polymorphous low-grade neuroepithelial tumor of the young (PLNTY): an epileptogenic neoplasm with oligodendroglioma-like components, aberrant CD34 expression, and genetic alterations involving the MAP kinase pathway
Epileptogenic tumors affecting children and young adults are a morphologically diverse collection of neuroepithelial neoplasms that, as a group, exhibit varying levels of glial and/or neuronal differentiation. Recent advances in molecular profiling technology, including comprehensive DNA sequencing...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
2017
|
| In: |
Acta neuropathologica
Year: 2017, Volume: 133, Issue: 3, Pages: 417-429 |
| ISSN: | 1432-0533 |
| DOI: | 10.1007/s00401-016-1639-9 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1007/s00401-016-1639-9 Verlag, Volltext: https://doi.org/10.1007/s00401-016-1639-9 
|
| Author Notes: | Jason T. Huse, Matija Snuderl, David T. W. Jones, Carole D. Brathwaite, Nolan Altman, Ehud Lavi, Richard Saffery, Alexandra Sexton-Oates, Ingmar Blumcke, David Capper, Matthias A. Karajannis, Ryma Benayed, Lukas Chavez, Cheddhi Thomas, Jonathan Serrano, Laetitia Borsu, Marc Ladanyi, Marc K. Rosenblum |
| Summary: | Epileptogenic tumors affecting children and young adults are a morphologically diverse collection of neuroepithelial neoplasms that, as a group, exhibit varying levels of glial and/or neuronal differentiation. Recent advances in molecular profiling technology, including comprehensive DNA sequencing and methylation analysis, have enabled the application of more precise and biologically relevant classification schemes to these tumors. In this report, we describe a morphologically and molecularly distinct epileptogenic neoplasm, the polymorphous low-grade neuroepithelial tumor of the young (PLNTY), which likely accounts for a sizable portion of oligodendroglioma-like tumors affecting the pediatric population. Characteristic microscopic findings most notably include infiltrative growth, the invariable presence of oligodendroglioma-like cellular components, and intense immunolabeling for cluster of differentiation 34 (CD34). Moreover, integrative molecular profiling reveals a distinct DNA methylation signature for PLNTYs, along with frequent genetic abnormalities involving either B-Raf proto-oncogene (BRAF) or fibroblast growth factor receptors 2 and 3 (FGFR2, FGFR3). These findings suggest that PLNTY represents a distinct biological entity within the larger spectrum of pediatric, low-grade neuroepithelial tumors. |
|---|---|
| Item Description: | Published online: 3 November 2016 im Zusatz zum HST ist die Zahl "34" tiefgestellt Gesehen am 09.10.2018 |
| Physical Description: | Online Resource |
| ISSN: | 1432-0533 |
| DOI: | 10.1007/s00401-016-1639-9 |