Developmental Brain Disorder Gene Database

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Missense

GRIN2B

HGNC:4586 (protein-coding gene)

glutamate ionotropic receptor NMDA type subunit 2B

Unique Cases:
39
Disorders:
ID, ASD, EP, SCZ, CP
Last Updated:
January 4, 2024

Summary
Cases
Publications
External

Gene Summary:

Gene Function
Component of NMDA receptor complexes that function as heterotetrameric, ligand-gated ion channels with high calcium permeability and voltage-dependent sensitivity to magnesium. Channel activation requires binding of the neurotransmitter glutamate to the epsilon subunit, glycine binding to the zeta subunit, plus membrane depolarization to eliminate channel inhibition by Mg(2+) (PubMed:8768735, PubMed:26919761, PubMed:26875626, PubMed:28126851). Sensitivity to glutamate and channel kinetics depend... (Source: Uniprot)
Previous symbols
NMDAR2B
Alias symbols
GluN2B, NR2B
Chromosomal Location
12p13.1
Genomic Coordinates
GRCh37:chr12:13714410-14133022
GRCh38:chr12:13537337-13982012
Associated Disorders
Intellectual Disability, Autism, Epilepsy, Cerebral Palsy

Predictive Scores:

HI Score (Decipher)

10.82

pLI (gnomAD)

1.00

LOEUF (gnomAD)

0.06

Classifications from External Sources:

SFARI Score (SFARI)

1

DDG2P Classification (DDG2P)

No Classification

ClinGen Classification (ClinGen)

Definitive1

GenCC Classification (GenCC)

Definitive3 Supportive2 Strong2

Publications:

Howrigan DP et. al., Exome sequencing in schizophrenia-affected parent-offspring trios reveals risk conferred by protein-coding de novo mutations., Nat Neurosci, 2020
Wang T et. al., Large-scale targeted sequencing identifies risk genes for neurodevelopmental disorders., Nat Commun, 2020
Yamamoto T et. al., Genomic backgrounds of Japanese patients with undiagnosed neurodevelopmental disorders., Brain Dev, 2019
Stojanovic JR et. al., Diagnostic and Clinical Utility of Clinical Exome Sequencing in Children With Moderate and Severe Global Developmental Delay / Intellectual Disability., J Child Neurol, 2020
Yang L et. al., Clinical and genetic spectrum of a large cohort of children with epilepsy in China., Genet Med, 2019
Coe BP et. al., Neurodevelopmental disease genes implicated by de novo mutation and copy number variation morbidity., Nat Genet, 2019
Aspromonte MC et. al., Characterization of intellectual disability and autism comorbidity through gene panel sequencing., Hum Mutat, 2019
Munnich A et. al., Impact of on-site clinical genetics consultations on diagnostic rate in children and young adults with autism spectrum disorder., Mol Autism, 2019
Beighley JS et. al., Clinical Phenotypes of Carriers of Mutations in CHD8 or Its Conserved Target Genes., Biol Psychiatry, 2020
Nouri N et. al., Clinical and genetic profile of children with unexplained intellectual disability/developmental delay and epilepsy., Epilepsy Res, 2021
Salinas V et. al., Clinical next generation sequencing in developmental and epileptic encephalopathies: Diagnostic relevance of data re-analysis and variants re-interpretation., Eur J Med Genet, 2021
Zaganas I et. al., Genetic cause of epilepsy in a Greek cohort of children and young adults with heterogeneous epilepsy syndromes., Epilepsy Behav Rep, 2021
Mei H et. al., Genetic Spectrum Identified by Exome Sequencing in a Chinese Pediatric Cerebral Palsy Cohort., J Pediatr, 2022
van Eyk CL et. al., Yield of clinically reportable genetic variants in unselected cerebral palsy by whole genome sequencing., NPJ Genom Med, 2021
Moreno-De-Luca A et. al., Molecular Diagnostic Yield of Exome Sequencing in Patients With Cerebral Palsy., JAMA, 2021
Varesio C et. al., Diagnostic Yield and Cost-Effectiveness of "Dynamic" Exome Analysis in Epilepsy with Neurodevelopmental Disorders: A Tertiary-Center Experience in Northern Italy., Diagnostics (Basel), 2021

NCBI: Gene

Integrates information from a wide range of species. A record may include nomenclature, Reference Sequences (RefSeqs), maps, pathways, variations, phenotypes, and links to genome-, phenotype-, and locus-specific resources worldwide.
NCBI: Gene

Gene Reviews

An international point-of-care resource for busy clinicians, provides clinically relevant and medically actionable information for inherited conditions in a standardized journal-style format, covering diagnosis, management, and genetic counseling for patients and their families.
Gene Reviews

DECIPHER

DECIPHER (DatabasE of genomiC varIation and Phenotype in Humans using Ensembl Resources) is an interactive web-based database which incorporates a suite of tools designed to aid the interpretation of genomic variants. DECIPHER enhances clinical diagnosis by retrieving information from a variety of bioinformatics resources relevant to the variant found in the patient.
DECIPHER

SFARI

SFARI Gene is an evolving online database designed to permit quick entrée into the genetics of autism, and to help researchers track the ever-expanding genetic risk factors that emerge in the literature.
SFARI

ClinGen

ClinGen is a National Institutes of Health (NIH)-funded resource dedicated to building an authoritative central resource that defines the clinical relevance of genes and variants for use in precision medicine and research.
ClinGen

GenCC

The GenCC DB provides information pertaining to the validity of gene-disease relationships, with a current focus on Mendelian diseases.
GenCC

gnomAD

The Genome Aggregation Database (gnomAD) is a resource developed by an international coalition of investigators, with the goal of aggregating and harmonizing both exome and genome sequencing data from a wide variety of large-scale sequencing projects, and making summary data available for the wider scientific community.
gnomAD
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