NM_000827.4:c.2270+8740G>A

Variant names:

• chr5-153779155-G-A
• rs1381120
• NM_000827.4:c.2270+8740G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000827.4(GRIA1):​c.2270+8740G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.196 in 152,158 control chromosomes in the GnomAD database, including 3,119 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.20 (3119 hom., cov: 32)
• Consequence: GRIA1 NM_000827.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.235
• Publications: 1 publications found

Genes affected

GRIA1 (HGNC:4571): (glutamate ionotropic receptor AMPA type subunit 1) 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 with multiple subunits, each possessing transmembrane regions, and all arranged to form a ligand-gated ion channel. The classification of glutamate receptors is based on their activation by different pharmacologic agonists. This gene belongs to a family of alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate (AMPA) receptors. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

GRIA1 Gene-Disease associations (from GenCC):

• intellectual developmental disorder, autosomal dominant 67

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
• intellectual developmental disorder, autosomal recessive 76

  Inheritance: AR, Unknown Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.224 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRIA1	NM_000827.4	c.2270+8740G>A		intron_variant	Intron 13 of 15	ENST00000285900.10	NP_000818.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GRIA1	ENST00000285900.10	c.2270+8740G>A		intron_variant	Intron 13 of 15	1	NM_000827.4	ENSP00000285900.4

Frequencies

GnomAD3 genomes AF: 0.196 AC: 29787 AN: 152042 Hom.: 3118 Cov.: 32

Gnomad AFR AF: 0.229

Gnomad AMI AF: 0.174

Gnomad AMR AF: 0.156

Gnomad ASJ AF: 0.304

Gnomad EAS AF: 0.0144

Gnomad SAS AF: 0.196

Gnomad FIN AF: 0.176

Gnomad MID AF: 0.301

Gnomad NFE AF: 0.196

Gnomad OTH AF: 0.207

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.196 AC: 29783 AN: 152158 Hom.: 3119 Cov.: 32 AF XY: 0.191 AC XY: 14236 AN XY: 74400

African (AFR) AF: 0.228 AC: 9467 AN: 41490

American (AMR) AF: 0.156 AC: 2379 AN: 15292

Ashkenazi Jewish (ASJ) AF: 0.304 AC: 1057 AN: 3472

East Asian (EAS) AF: 0.0145 AC: 75 AN: 5186

South Asian (SAS) AF: 0.194 AC: 935 AN: 4824

European-Finnish (FIN) AF: 0.176 AC: 1864 AN: 10592

Middle Eastern (MID) AF: 0.306 AC: 90 AN: 294

European-Non Finnish (NFE) AF: 0.196 AC: 13324 AN: 67986

Other (OTH) AF: 0.205 AC: 433 AN: 2110

Alfa AF: 0.190 Hom.: 330

Bravo AF: 0.196

Asia WGS AF: 0.109 AC: 380 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	1.0
DANN	Benign	0.77
PhyloP100		-0.23
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs1381120; hg19: chr5-153158715;