rs431905516

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2PP3_ModeratePP5

The NM_001044.5(SLC6A3):​c.1561C>T​(p.Arg521Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000411 in 1,460,600 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

SLC6A3
NM_001044.5 missense

Scores

10
6
3

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2U:1

Conservation

PhyloP100: 0.485

Publications

10 publications found
Variant links:
Genes affected
SLC6A3 (HGNC:11049): (solute carrier family 6 member 3) This gene encodes a dopamine transporter which is a member of the sodium- and chloride-dependent neurotransmitter transporter family. The 3' UTR of this gene contains a 40 bp tandem repeat, referred to as a variable number tandem repeat or VNTR, which can be present in 3 to 11 copies. Variation in the number of repeats is associated with idiopathic epilepsy, attention-deficit hyperactivity disorder, dependence on alcohol and cocaine, susceptibility to Parkinson disease and protection against nicotine dependence.[provided by RefSeq, Nov 2009]
SLC6A3 Gene-Disease associations (from GenCC):
  • classic dopamine transporter deficiency syndrome
    Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
  • SLC6A3-related dopamine transporter deficiency syndrome
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • parkinsonism-dystonia, infantile
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.909
PP5
Variant 5-1406226-G-A is Pathogenic according to our data. Variant chr5-1406226-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 97018.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SLC6A3NM_001044.5 linkc.1561C>T p.Arg521Trp missense_variant Exon 12 of 15 ENST00000270349.12 NP_001035.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SLC6A3ENST00000270349.12 linkc.1561C>T p.Arg521Trp missense_variant Exon 12 of 15 1 NM_001044.5 ENSP00000270349.9
SLC6A3ENST00000713696.1 linkc.1426C>T p.Arg476Trp missense_variant Exon 11 of 15 ENSP00000519000.1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.00000801
AC:
2
AN:
249788
AF XY:
0.0000148
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 FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000889
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000411
AC:
6
AN:
1460600
Hom.:
0
Cov.:
32
AF XY:
0.00000413
AC XY:
3
AN XY:
726624
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.00
AC:
0
AN:
44722
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26126
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39698
South Asian (SAS)
AF:
0.0000116
AC:
1
AN:
86256
European-Finnish (FIN)
AF:
0.0000383
AC:
2
AN:
52262
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00000270
AC:
3
AN:
1111912
Other (OTH)
AF:
0.00
AC:
0
AN:
60378
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.467
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Cov.:
33
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.00000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:2Uncertain:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Classic dopamine transporter deficiency syndrome Pathogenic:2
Feb 22, 2019
Revvity Omics, Revvity
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Jan 01, 2011
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Parkinsonism-dystonia, infantile Uncertain:1
Dec 06, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Experimental studies have shown that this missense change affects SLC6A3 function (PMID: 21112253). 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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt SLC6A3 protein function. ClinVar contains an entry for this variant (Variation ID: 97018). This missense change has been observed in individual(s) with dopamine transporter deficiency syndrome (PMID: 21112253). This variant is present in population databases (rs431905516, gnomAD 0.003%). This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 521 of the SLC6A3 protein (p.Arg521Trp). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.37
BayesDel_addAF
Pathogenic
0.26
D
BayesDel_noAF
Pathogenic
0.24
CADD
Uncertain
26
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.68
D
Eigen
Benign
0.012
Eigen_PC
Benign
-0.16
FATHMM_MKL
Uncertain
0.76
D
LIST_S2
Pathogenic
1.0
D
M_CAP
Pathogenic
0.62
D
MetaRNN
Pathogenic
0.91
D
MetaSVM
Uncertain
0.18
D
MutationAssessor
Pathogenic
3.0
M
PhyloP100
0.48
PrimateAI
Uncertain
0.62
T
PROVEAN
Pathogenic
-7.0
D
REVEL
Pathogenic
0.70
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0010
D
Polyphen
1.0
D
Vest4
0.83
MutPred
0.63
Loss of ubiquitination at K525 (P = 0.0566);
MVP
0.97
MPC
1.6
ClinPred
0.95
D
GERP RS
-2.3
Varity_R
0.81
gMVP
0.83
Mutation Taster
=7/93
disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs431905516; hg19: chr5-1406341; COSMIC: COSV54364068; COSMIC: COSV54364068; API