rs149023945

Positions:

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000171.4(GLRA1):c.117G>C(p.Ser39=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00177 in 1,613,946 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. S39S) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0017 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0018 ( 2 hom. )

Consequence

GLRA1
NM_000171.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -4.44

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 Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.65).

BP6

Variant 5-151892378-C-G is Benign according to our data. Variant chr5-151892378-C-G is described in ClinVar as [Likely_benign]. Clinvar id is 352321.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-4.44 with no splicing effect.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00166 (253/152228) while in subpopulation NFE AF= 0.00231 (157/68012). AF 95% confidence interval is 0.00201. There are 1 homozygotes in gnomad4. There are 120 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 2 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
GLRA1	NM_000171.4 linkuse as main transcript	c.117G>C	p.Ser39=	synonymous_variant	2/9	ENST00000274576.9
GLRA1	NM_001146040.2 linkuse as main transcript	c.117G>C	p.Ser39=	synonymous_variant	2/9
GLRA1	XM_047417105.1 linkuse as main transcript	c.165G>C	p.Ser55=	synonymous_variant	2/9
GLRA1	NM_001292000.2 linkuse as main transcript	c.-65-5590G>C		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GLRA1	ENST00000274576.9 linkuse as main transcript	c.117G>C	p.Ser39=	synonymous_variant	2/9	1	NM_000171.4	P4	P23415-2
GLRA1	ENST00000455880.2 linkuse as main transcript	c.117G>C	p.Ser39=	synonymous_variant	2/9	1		A1	P23415-1
GLRA1	ENST00000471351.2 linkuse as main transcript	n.400G>C		non_coding_transcript_exon_variant	2/8	1
GLRA1	ENST00000462581.6 linkuse as main transcript	c.57-5590G>C		intron_variant, NMD_transcript_variant		1

Frequencies

GnomAD3 genomes

AF:

0.00165

AC:

251

AN:

152110

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000411

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00118

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00207

Gnomad FIN

AF:

0.00424

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00229

Gnomad OTH

AF:

0.00192

GnomAD3 exomes

AF:

0.00148

AC:

373

AN:

251252

Hom.:

AF XY:

0.00162

AC XY:

220

AN XY:

135796

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.000260

Gnomad ASJ exome

AF:

0.0000993

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00134

Gnomad FIN exome

AF:

0.00444

Gnomad NFE exome

AF:

0.00185

Gnomad OTH exome

AF:

0.00228

GnomAD4 exome

AF:

0.00178

AC:

2601

AN:

1461718

Hom.:

Cov.:

AF XY:

0.00185

AC XY:

1344

AN XY:

727174

show subpopulations

Gnomad4 AFR exome

AF:

0.000119

Gnomad4 AMR exome

AF:

0.000313

Gnomad4 ASJ exome

AF:

0.0000765

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00139

Gnomad4 FIN exome

AF:

0.00431

Gnomad4 NFE exome

AF:

0.00190

Gnomad4 OTH exome

AF:

0.00167

GnomAD4 genome

AF:

0.00166

AC:

253

AN:

152228

Hom.:

Cov.:

AF XY:

0.00161

AC XY:

120

AN XY:

74416

show subpopulations

Gnomad4 AFR

AF:

0.000409

Gnomad4 AMR

AF:

0.00118

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00207

Gnomad4 FIN

AF:

0.00424

Gnomad4 NFE

AF:

0.00231

Gnomad4 OTH

AF:

0.00190

Alfa

AF:

0.00140

Hom.:

Bravo

AF:

0.00117

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00196

EpiControl

AF:

0.00196

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	May 07, 2021	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Hyperekplexia 1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Hereditary hyperekplexia

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 30, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.65

CADD

Benign

0.68

DANN

Benign

0.62

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