Saskia B Wortmann, Rene G Feichtinger, Lucia Abela, Loes A van Gemert, Mélodie Aubart, Claire-Marine Dufeu-Berat, Nathalie Boddaert, Rene de Coo, Lara Stühn, Jasmijn Hebbink, Wolfram Heinritz, Julia Hildebrandt, Nastassja Himmelreich, Christoph Korenke, Anna Lehman, Thomas Leyland, Christine Makowski, Rafael Jenaro Martinez Marin, Pauline Marzin, Chris Mühlhausen, Marlène Rio, Agnes Rotig, Charles-Joris Roux, Manuel Schiff, Tobias B Haack, Steffen Syrbe, Stas A Zylicz, Christian Thiel, Maria Veiga da Cunha, Emile van Schaftingen, Matias Wagner, Johannes A Mayr, Ron A Wevers, Eugen Boltshauser, Michel A Willemsen
BACKGROUND AND OBJECTIVES: Hexokinase 1 (encoded by HK1 ) catalyzes the first step of glycolysis, the adenosine triphosphate-dependent phosphorylation of glucose to glucose-6-phosphate. Monoallelic HK1 variants causing a neurodevelopmental disorder (NDD) have been reported in 12 individuals. METHODS: We investigated clinical phenotypes, brain MRIs, and the CSF of 15 previously unpublished individuals with monoallelic HK1 variants and an NDD phenotype. RESULTS: All individuals had recurrent variants likely causing gain-of-function, representing mutational hot spots...
April 2024: Neurology. Genetics