GRIN1 and epilepsy: Previously, others had explored a subset of neural antibodies (NMDAR1, AMPAR1, AMPAR2, GABABR1, GABABR2, CASPR2, LGI1, and DPPX) in 32 dogs with CNS disease, including four dogs with epilepsy, with a commercially available CBA expressing human antigen and indirect immunofluorescence assay, with postulated AB specificity because of high homology of the amino acid sequences between humans and dogs.20