Variant chrX-123184570-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_000828.5(GRIA3):c.35T>C(p.Leu12Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000456 in 1,097,187 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 21)

Exomes 𝑓: 0.0000046 ( 0 hom. 2 hem. )

Consequence

GRIA3
NM_000828.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.47

Variant links:

Genes affected

GRIA3 (HGNC:4573): (glutamate ionotropic receptor AMPA type subunit 3) Glutamate receptors are the predominant excitatory neurotransmitter receptors in the mammalian brain and are activated in a variety of normal neurophysiologic processes. These receptors are heteromeric protein complexes composed of multiple subunits, arranged to form ligand-gated ion channels. The classification of glutamate receptors is based on their activation by different pharmacologic agonists. The subunit encoded by this gene belongs to a family of AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate)-sensitive glutamate receptors, and is subject to RNA editing (AGA->GGA; R->G). Alternative splicing at this locus results in different isoforms, which may vary in their signal transduction properties. [provided by RefSeq, Jul 2008]

GRIA3 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BS2

High Hemizygotes in GnomAdExome4 at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
GRIA3	NM_000828.5 linkuse as main transcript	c.35T>C	p.Leu12Pro	missense_variant	1/16	ENST00000622768.5	NP_000819.4
GRIA3	NM_007325.5 linkuse as main transcript	c.35T>C	p.Leu12Pro	missense_variant	1/16	ENST00000620443.2	NP_015564.5
GRIA3	NM_001256743.2 linkuse as main transcript	c.35T>C	p.Leu12Pro	missense_variant	1/4		NP_001243672.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GRIA3	ENST00000620443.2 linkuse as main transcript	c.35T>C	p.Leu12Pro	missense_variant	1/16	1	NM_007325.5	ENSP00000478489	P4	P42263-2
GRIA3	ENST00000622768.5 linkuse as main transcript	c.35T>C	p.Leu12Pro	missense_variant	1/16	5	NM_000828.5	ENSP00000481554	A1	P42263-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000218

AC:

AN:

183481

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

67911

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000146

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000456

AC:

AN:

1097187

Hom.:

Cov.:

AF XY:

0.00000552

AC XY:

AN XY:

362567

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000114

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:

0.00000119

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 04, 2024

This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 12 of the GRIA3 protein (p.Leu12Pro). This variant is present in population databases (rs779764392, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with GRIA3-related conditions. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Uncertain

0.072

BayesDel_noAF

Uncertain

0.080

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.25

T;T;T;T;T;.

FATHMM_MKL

Benign

0.74

LIST_S2

Benign

0.75

.;T;T;T;.;T

M_CAP

Benign

0.023

MetaRNN

Uncertain

0.46

T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.69

.;N;.;.;N;N

MutationTaster

Benign

1.0

D;D;D;D;D;D

PrimateAI

Uncertain

0.60

Sift4G

Uncertain

0.053

T;T;T;T;T;T

Polyphen

0.39, 0.52

.;B;.;.;B;P

Vest4

0.51

MutPred

0.83

Loss of helix (P = 0.0068);Loss of helix (P = 0.0068);Loss of helix (P = 0.0068);Loss of helix (P = 0.0068);Loss of helix (P = 0.0068);Loss of helix (P = 0.0068);

MVP

0.97

ClinPred

0.18

GERP RS

5.3

Varity_R

0.38

gMVP

0.79

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

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