12-13564162-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_ModerateBP6BS1BS2

The NM_000834.5(GRIN2B):c.3076G>A(p.Gly1026Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000263 in 1,614,052 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 11/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G1026D) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00028 ( 0 hom. )

Consequence

GRIN2B
NM_000834.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:7

Conservation

PhyloP100: 5.23

Publications

4 publications found

Variant links:

Genes affected

GRIN2B (HGNC:4586): (glutamate ionotropic receptor NMDA type subunit 2B) This gene encodes a member of the N-methyl-D-aspartate (NMDA) receptor family within the ionotropic glutamate receptor superfamily. The encoded protein is a subunit of the NMDA receptor ion channel which acts as an agonist binding site for glutamate. The NMDA receptors mediate a slow calcium-permeable component of excitatory synaptic transmission in the central nervous system. The NMDA receptors are heterotetramers of seven genetically encoded, differentially expressed subunits including NR1 (GRIN1), NR2 (GRIN2A, GRIN2B, GRIN2C, or GRIN2D) and NR3 (GRIN3A or GRIN3B). The early expression of this gene in development suggests a role in brain development, circuit formation, synaptic plasticity, and cellular migration and differentiation. Naturally occurring mutations within this gene are associated with neurodevelopmental disorders including autism spectrum disorder, attention deficit hyperactivity disorder, epilepsy, and schizophrenia. [provided by RefSeq, Aug 2017]

GRIN2B Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen, Ambry Genetics
developmental and epileptic encephalopathy, 27
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
intellectual disability, autosomal dominant 6
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
autosomal dominant non-syndromic intellectual disability
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
infantile spasms
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

GRIN2B links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.16046378).

BP6

Variant 12-13564162-C-T is Benign according to our data. Variant chr12-13564162-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 205716.

BS1

Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.000277 (405/1461884) while in subpopulation SAS AF = 0.000417 (36/86254). AF 95% confidence interval is 0.00031. There are 0 homozygotes in GnomAdExome4. There are 226 alleles in the male GnomAdExome4 subpopulation. Median coverage is 37. This position passed quality control check.

BS2

High AC in GnomAd4 at 20 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000834.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GRIN2B	NM_000834.5	MANE Select	c.3076G>A	p.Gly1026Ser	missense	Exon 14 of 14	NP_000825.2
	GRIN2B	NM_001413992.1		c.3076G>A	p.Gly1026Ser	missense	Exon 15 of 15	NP_001400921.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
GRIN2B	ENST00000609686.4	TSL:1 MANE Select	c.3076G>A	p.Gly1026Ser	missense	Exon 14 of 14	ENSP00000477455.1
GRIN2B	ENST00000630791.3	TSL:5	c.3076G>A	p.Gly1026Ser	missense	Exon 15 of 15	ENSP00000486677.3
GRIN2B	ENST00000637214.1	TSL:5	c.69+44441G>A		intron	N/A	ENSP00000489997.1

Frequencies

GnomAD3 genomes

AF:

0.000132

AC:

AN:

152050

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.0000944

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000176

Gnomad OTH

AF:

0.000480

GnomAD2 exomes

AF:

0.000227

AC:

AN:

251428

AF XY:

0.000287

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000273

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000277

AC:

405

AN:

1461884

Hom.:

Cov.:

AF XY:

0.000311

AC XY:

226

AN XY:

727242

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.000224

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000417

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.0000374

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000312

AC:

347

AN:

1112006

Other (OTH)

AF:

0.000116

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

Heterozygous variant carriers

108

135

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000131

AC:

AN:

152168

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74366

show subpopulations

African (AFR)

AF:

0.0000722

AC:

AN:

41530

American (AMR)

AF:

0.0000654

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5140

South Asian (SAS)

AF:

0.000415

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.0000944

AC:

AN:

10596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000176

AC:

AN:

68020

Other (OTH)

AF:

0.000475

AC:

AN:

2106

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.495

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000199

Hom.:

Bravo

AF:

0.000102

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.000247

AC:

EpiCase

AF:

0.000491

EpiControl

AF:

0.000296

ClinVar

ClinVar submissions as Germline

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

Developmental and epileptic encephalopathy, 27 (1)

GRIN2B-related disorder (1)

Inborn genetic diseases (1)

Intellectual disability, autosomal dominant 6;C4015316:Developmental and epileptic encephalopathy, 27 (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.074

BayesDel_noAF

Uncertain

0.0

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.35

Eigen

Benign

0.18

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.88

M_CAP

Benign

0.0045

MetaRNN

Benign

0.16

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

PhyloP100

5.2

PrimateAI

Uncertain

0.56

Sift4G

Benign

0.74

Polyphen

0.64

Vest4

0.34

MVP

0.91

MPC

2.1

ClinPred

0.19

GERP RS

5.5

Varity_R

0.34

gMVP

0.54

Mutation Taster

=44/56

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over