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The ISN has agreed to support the Consortium to Inform Molecular and Practical Approaches to CNS Tumour taxonomy – Not Official WHO. This international initiative is led by David Louis and Andreas von Deimling and aims to provide the neuropathology community with unofficial updates on CNS tumour classification, between editions of the official WHO classification. These updates would be endorsed by the ISN and published in both Acta Neuropathologica and Brain Pathology. Further details are available here: