rs987117042

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP7

The NM_182978.4(GNAL):c.69G>A(p.Ser23Ser) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000292 in 1,369,188 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000016 ( 0 hom. )

Consequence

GNAL
NM_182978.4 synonymous

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.12

Publications

0 publications found

Variant links:

Genes affected

GNAL (HGNC:4388): (G protein subunit alpha L) This gene encodes a stimulatory G protein alpha subunit which mediates odorant signaling in the olfactory epithelium. This protein couples dopamine type 1 receptors and adenosine A2A receptors and is widely expressed in the central nervous system. Mutations in this gene have been associated with dystonia 25 and this gene is located in a susceptibility region for bipolar disorder and schizophrenia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2013]

GNAL Gene-Disease associations (from GenCC):

dystonia 25
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics

GNAL links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.39).

BP7

Synonymous conserved (PhyloP=1.12 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GNAL	NM_182978.4 link	c.69G>A	p.Ser23Ser	synonymous_variant	Exon 1 of 12	ENST00000334049.11	NP_892023.1	P38405-2
GNAL	XM_006722324.4 link	c.69G>A	p.Ser23Ser	synonymous_variant	Exon 1 of 6		XP_006722387.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GNAL	ENST00000334049.11 link	c.69G>A	p.Ser23Ser	synonymous_variant	Exon 1 of 12	1	NM_182978.4	ENSP00000334051.5		P38405-2
GNAL	ENST00000585590.1 link	n.-58G>A		upstream_gene_variant		2

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151822

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000164

AC:

AN:

1217366

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

594686

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

23808

American (AMR)

AF:

0.00

AC:

AN:

11416

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

16848

East Asian (EAS)

AF:

0.00

AC:

AN:

27148

South Asian (SAS)

AF:

0.00

AC:

AN:

52020

European-Finnish (FIN)

AF:

0.00

AC:

AN:

29372

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3464

European-Non Finnish (NFE)

AF:

0.00000199

AC:

AN:

1003396

Other (OTH)

AF:

0.00

AC:

AN:

49894

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151822

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74158

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41344

American (AMR)

AF:

0.00

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5158

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10532

Middle Eastern (MID)

AF:

0.00

AC:

AN:

312

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67920

Other (OTH)

AF:

0.00

AC:

AN:

2084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Dystonic disorder

Uncertain:1

Sep 06, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant has not been reported in the literature in individuals with GNAL-related disease. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site, but this prediction has not been confirmed by published transcriptional studies. 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. This sequence change affects codon 23 of the GNAL mRNA. It is a 'silent' change, meaning that it does not change the encoded amino acid sequence of the GNAL protein. The GNAL gene has multiple clinically relevant transcripts. The c.69G>A variant occurs in the alternate transcript NM_182978.3, which corresponds to position c.-62177G>A in NM_001142339.2, the primary transcript listed in the Methods. This variant is not present in population databases (ExAC no frequency). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.39

CADD

Benign

(source)

DANN

Benign

0.97

PhyloP100

1.1

PromoterAI

-0.055

Neutral

(source)

Splicing

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over