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. 2019 Nov;138(5):877-881.
doi: 10.1007/s00401-019-02072-2. Epub 2019 Sep 12.

Recurrent non-canonical histone H3 mutations in spinal cord diffuse gliomas

Affiliations

Recurrent non-canonical histone H3 mutations in spinal cord diffuse gliomas

Emily A Sloan et al. Acta Neuropathol. 2019 Nov.
No abstract available

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Conflict of interest statement

Conflict of interest

The authors declare that they have no competing interests related to this report.

Figures

Fig. 1
Fig. 1
Recurrent non-canonical histone H3 mutations in spinal cord diffuse gliomas. a Oncoprint summary table showing the clinicopathologic features and likely pathogenic genetic alterations identified in the 13 patients. b Radiographic and histologic features of the three spinal cord diffuse gliomas with non-canonical histone H3 mutations. Case SC-9 harboring dual H3F3A p.K27M and p.G34W mutations demonstrated immunopositivity with antibodies against both histone H3 K27M mutant protein and histone H3.3 G34W mutant protein in virtually all tumor cells. Case SC-10 harboring H3F3A p.G34W mutation demonstrated immunopositivity for histone H3.3 G34W mutant protein but not histone H3 K27M mutant protein. Case SC-11 harboring H3F3B p.K27I mutation was immunonegative for histone H3 K27M mutant protein but demonstrated loss of histone H3 lysine 27 trimethylation (H3K27me3) in the vast majority of tumor nuclei.
Fig. 1
Fig. 1
Recurrent non-canonical histone H3 mutations in spinal cord diffuse gliomas. a Oncoprint summary table showing the clinicopathologic features and likely pathogenic genetic alterations identified in the 13 patients. b Radiographic and histologic features of the three spinal cord diffuse gliomas with non-canonical histone H3 mutations. Case SC-9 harboring dual H3F3A p.K27M and p.G34W mutations demonstrated immunopositivity with antibodies against both histone H3 K27M mutant protein and histone H3.3 G34W mutant protein in virtually all tumor cells. Case SC-10 harboring H3F3A p.G34W mutation demonstrated immunopositivity for histone H3.3 G34W mutant protein but not histone H3 K27M mutant protein. Case SC-11 harboring H3F3B p.K27I mutation was immunonegative for histone H3 K27M mutant protein but demonstrated loss of histone H3 lysine 27 trimethylation (H3K27me3) in the vast majority of tumor nuclei.

References

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