Oxford University Press, Brain, 10(142), p. 2948-2964, 2019
DOI: 10.1093/brain/awz248
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See Karakaya and Wirth (doi:10.1093/brain/awz273) for a scientific commentary on this article.Neurofascin (NFASC) isoforms are immunoglobulin cell adhesion molecules involved in node of Ranvier assembly. Efthymiou et al. identify biallelic NFASC variants in ten unrelated patients with a neurodevelopmental disorder characterized by variable degrees of central and peripheral involvement. Abnormal expression of Nfasc155 is accompanied by severe loss of myelinated fibres.