GRIN1 and Thrombocytopenia: In mice, thrombocytopenia has been described as a phenotype of NMDAR1 KO heterozygotes (Grin1-/+) (Mouse Genome Informatics and the Wellcome Trust Sanger Institute Mouse Genetics Project, http://www.informatics.jax.org/allele/genoview/MGI:5781633).