Variant chr5-151822777-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PP3_StrongPP5_Moderate

The NM_000171.4(GLRA1):c.1246G>A(p.Asp416Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000547 in 1,461,640 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

GLRA1
NM_000171.4 missense

Scores

Clinical Significance

Likely pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 7.72

Variant links:

Genes affected

GLRA1 (HGNC:4326): (glycine receptor alpha 1) The protein encoded by this gene is a subunit of a pentameric inhibitory glycine receptor, which mediates postsynaptic inhibition in the central nervous system. Defects in this gene are a cause of startle disease (STHE), also known as hereditary hyperekplexia or congenital stiff-person syndrome. Multiple transcript variants encoding different isoforms have been found. [provided by RefSeq, Dec 2015]

GLRA1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.992

PP5

Variant 5-151822777-C-T is Pathogenic according to our data. Variant chr5-151822777-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 545477.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
GLRA1	NM_000171.4 linkuse as main transcript	c.1246G>A	p.Asp416Asn	missense_variant	9/9	ENST00000274576.9
GLRA1	NM_001146040.2 linkuse as main transcript	c.1270G>A	p.Asp424Asn	missense_variant	9/9
GLRA1	NM_001292000.2 linkuse as main transcript	c.997G>A	p.Asp333Asn	missense_variant	8/8
GLRA1	XM_047417105.1 linkuse as main transcript	c.1294G>A	p.Asp432Asn	missense_variant	9/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GLRA1	ENST00000274576.9 linkuse as main transcript	c.1246G>A	p.Asp416Asn	missense_variant	9/9	1	NM_000171.4	P4	P23415-2
GLRA1	ENST00000455880.2 linkuse as main transcript	c.1270G>A	p.Asp424Asn	missense_variant	9/9	1		A1	P23415-1
GLRA1	ENST00000462581.6 linkuse as main transcript	c.*1004G>A		3_prime_UTR_variant, NMD_transcript_variant	8/8	1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251398

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135864

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000547

AC:

AN:

1461640

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727130

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

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:

0.00000630

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Hyperekplexia 1

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Neurogenetics Lab, King Edward Memorial Hospital and Seth Gordhandas Sunderdas Medical College

The p.Asp424Asn variant in the GLRA1 gene has been detected in a patient with Hyperekplexia. The variant was detected in the homozygous condition in the patient and the same was segregating from the parents. This clearly suggests the autosomal recessive mode of inheritance. The patient was responding to the clonazepam treatment. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

1.0

BayesDel_addAF

Pathogenic

0.27

BayesDel_noAF

Pathogenic

0.15

CADD

Pathogenic

DANN

Pathogenic

1.0

Eigen

Pathogenic

0.89

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Uncertain

0.93

LIST_S2

Pathogenic

1.0

D;D

M_CAP

Pathogenic

0.82

MetaRNN

Pathogenic

0.99

D;D

MetaSVM

Pathogenic

1.1

MutationAssessor

Pathogenic

3.6

.;H

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.73

PROVEAN

Pathogenic

-4.7

D;D

REVEL

Pathogenic

0.95

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

1.0

D;D

Vest4

0.98

MutPred

0.90

.;Gain of MoRF binding (P = 0.0544);

MVP

0.96

MPC

0.33

ClinPred

1.0

GERP RS

5.0

Varity_R

0.93

gMVP

0.96

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