Dévina C Ung, Nicolas Pietrancosta, Elena Baz Badillo, Brigitt Raux, Daniel Tapken, Andjela Zlatanovic, Adrien Doridant, Ben Pode-Shakked, Annick Raas-Rothschild, Orly Elpeleg, Bassam Abu-Libdeh, Nasrin Hamed, Marie-Amélie Papon, Sylviane Marouillat, Rose-Anne Thépault, Giovanni Stevanin, Jonathan Elegheert, Mathieu Letellier, Michael Hollmann, Bertrand Lambolez, Ludovic Tricoire, Annick Toutain, Régine Hepp, Frédéric Laumonnier
The ionotropic glutamate delta receptor GluD1, encoded by the GRID1 gene, is involved in synapse formation, function, and plasticity. GluD1 does not bind glutamate, but instead cerebellin and D-serine, which allow the formation of trans-synaptic bridges, and trigger transmembrane signaling. Despite wide expression in the nervous system, pathogenic GRID1 variants have not been characterized in humans so far. We report homozygous missense GRID1 variants in five individuals from two unrelated consanguineous families presenting with intellectual disability and spastic paraplegia, without (p...
February 28, 2024: Molecular Psychiatry