NM_021956.5:c.613C>T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BS1_Supporting

The NM_021956.5(GRIK2):c.613C>T(p.Pro205Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000142 in 1,604,028 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

GRIK2
NM_021956.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 7.90

Variant links:

Genes affected

GRIK2 (HGNC:4580): (glutamate ionotropic receptor kainate type subunit 2) Glutamate receptors are the predominant excitatory neurotransmitter receptors in the mammalian brain and are activated in a variety of normal neurophysiologic processes. This gene product belongs to the kainate family of glutamate receptors, which are composed of four subunits and function as ligand-activated ion channels. The subunit encoded by this gene is subject to RNA editing at multiple sites within the first and second transmembrane domains, which is thought to alter the structure and function of the receptor complex. Alternatively spliced transcript variants encoding different isoforms have also been described for this gene. Mutations in this gene have been associated with autosomal recessive cognitive disability. [provided by RefSeq, Jul 2008]

GRIK2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0000988 (15/151898) while in subpopulation AFR AF= 0.000169 (7/41444). AF 95% confidence interval is 0.0000789. There are 0 homozygotes in gnomad4. There are 6 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRIK2	NM_021956.5 link	c.613C>T	p.Pro205Ser	missense_variant	Exon 5 of 17	ENST00000369134.9	NP_068775.1	Q13002-1Q8IY40A0A8D9PH75A8K0H7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GRIK2	ENST00000369134.9 link	c.613C>T	p.Pro205Ser	missense_variant	Exon 5 of 17	5	NM_021956.5	ENSP00000358130.6		Q13002-1F8WEZ8

Frequencies

GnomAD3 genomes

AF:

0.0000988

AC:

AN:

151782

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.0000736

Gnomad OTH

AF:

0.000480

GnomAD3 exomes

AF:

0.000125

AC:

AN:

247960

Hom.:

AF XY:

0.0000969

AC XY:

AN XY:

134214

show subpopulations

Gnomad AFR exome

AF:

0.000249

Gnomad AMR exome

AF:

0.000385

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000107

Gnomad OTH exome

AF:

0.000334

GnomAD4 exome

AF:

0.000146

AC:

212

AN:

1452130

Hom.:

Cov.:

AF XY:

0.000123

AC XY:

AN XY:

722832

show subpopulations

Gnomad4 AFR exome

AF:

0.0000905

Gnomad4 AMR exome

AF:

0.000475

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000160

Gnomad4 OTH exome

AF:

0.000150

GnomAD4 genome

AF:

0.0000988

AC:

AN:

151898

Hom.:

Cov.:

AF XY:

0.0000808

AC XY:

AN XY:

74220

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000736

Gnomad4 OTH

AF:

0.000475

Alfa

AF:

0.000126

Hom.:

Bravo

AF:

0.000151

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000115

AC:

EpiCase

AF:

0.000110

EpiControl

AF:

0.000239

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 12, 2016

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Intellectual disability, autosomal recessive 6

Uncertain:1

Sep 16, 2020

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

not provided

Uncertain:1

Breakthrough Genomics, Breakthrough Genomics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Benign

-0.019

BayesDel_noAF

Uncertain

0.050

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.19

T;.;.;T;T;.;T

Eigen

Uncertain

0.38

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

D;D;D;D;D;D;D

M_CAP

Uncertain

0.10

MetaRNN

Uncertain

0.66

D;D;D;D;D;D;D

MetaSVM

Uncertain

-0.19

MutationAssessor

Benign

1.5

L;L;L;.;.;.;.

PrimateAI

Pathogenic

0.86

PROVEAN

Uncertain

-3.3

D;D;D;D;.;.;.

REVEL

Uncertain

0.62

Sift

Benign

0.18

T;T;T;D;.;.;.

Sift4G

Benign

0.34

T;T;T;T;T;T;T

Polyphen

0.47

P;B;B;.;.;.;.

Vest4

0.65

MVP

0.88

MPC

1.1

ClinPred

0.064

GERP RS

5.6

Varity_R

0.33

gMVP

0.64

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over