chr16-9764441-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBP6

The NM_001134407.3(GRIN2A):c.3103G>A(p.Asp1035Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000366 in 1,614,102 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000034 ( 0 hom. )

Consequence

GRIN2A
NM_001134407.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 5.55

Publications

6 publications found

Variant links:

Genes affected

GRIN2A (HGNC:4585): (glutamate ionotropic receptor NMDA type subunit 2A) This gene encodes a member of the glutamate-gated ion channel protein family. The encoded protein is an N-methyl-D-aspartate (NMDA) receptor subunit. NMDA receptors are both ligand-gated and voltage-dependent, and are involved in long-term potentiation, an activity-dependent increase in the efficiency of synaptic transmission thought to underlie certain kinds of memory and learning. These receptors are permeable to calcium ions, and activation results in a calcium influx into post-synaptic cells, which results in the activation of several signaling cascades. Disruption of this gene is associated with focal epilepsy and speech disorder with or without cognitive disability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]

GRIN2A Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
Landau-Kleffner syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics
continuous spikes and waves during sleep
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
early-onset epileptic encephalopathy and intellectual disability due to GRIN2A mutation
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
rolandic epilepsy-speech dyspraxia syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
self-limited epilepsy with centrotemporal spikes
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
neurodevelopmental disorder
Inheritance: AR Classification: LIMITED Submitted by: G2P

GRIN2A links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.076581806).

BP6

Variant 16-9764441-C-T is Benign according to our data. Variant chr16-9764441-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 435379.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001134407.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GRIN2A	NM_001134407.3	MANE Select	c.3103G>A	p.Asp1035Asn	missense	Exon 13 of 13	NP_001127879.1	Q12879-1
GRIN2A	NM_000833.5		c.3103G>A	p.Asp1035Asn	missense	Exon 14 of 14	NP_000824.1	Q12879-1
GRIN2A	NM_001134408.2		c.3103G>A	p.Asp1035Asn	missense	Exon 13 of 14	NP_001127880.1	Q12879-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
GRIN2A	ENST00000330684.4	TSL:1 MANE Select	c.3103G>A	p.Asp1035Asn	missense	Exon 13 of 13	ENSP00000332549.3	Q12879-1
GRIN2A	ENST00000396573.6	TSL:1	c.3103G>A	p.Asp1035Asn	missense	Exon 14 of 14	ENSP00000379818.2	Q12879-1
GRIN2A	ENST00000562109.5	TSL:1	c.3103G>A	p.Asp1035Asn	missense	Exon 13 of 14	ENSP00000454998.1	Q12879-2

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152118

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000358

AC:

AN:

251276

AF XY:

0.0000368

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000704

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000342

AC:

AN:

1461866

Hom.:

Cov.:

AF XY:

0.0000413

AC XY:

AN XY:

727238

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.0000224

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:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000405

AC:

AN:

1111986

Other (OTH)

AF:

0.0000331

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152236

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74434

show subpopulations

African (AFR)

AF:

0.0000481

AC:

AN:

41548

American (AMR)

AF:

0.0000654

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5164

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68008

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.519

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:

0.0000889

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000330

AC:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (2)

Landau-Kleffner syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.074

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.68

CADD

Benign

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.32

Eigen

Benign

-0.25

Eigen_PC

Benign

-0.042

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.85

M_CAP

Benign

0.041

MetaRNN

Benign

0.077

MetaSVM

Benign

-0.93

MutationAssessor

Benign

0.69

PhyloP100

5.6

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.24

REVEL

Benign

0.084

Sift

Benign

0.47

Sift4G

Benign

0.23

Polyphen

0.077

Vest4

0.059

MVP

0.48

MPC

0.28

ClinPred

0.085

GERP RS

5.3

Varity_R

0.11

gMVP

0.16

Mutation Taster

=70/30

polymorphism

(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