rs372722904

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001044.5(SLC6A3):​c.1838C>T​(p.Thr613Met) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000822 in 1,581,500 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000070 ( 0 hom. )

Consequence

SLC6A3
NM_001044.5 missense, splice_region

Scores

5
11
Splicing: ADA: 0.005831
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.09

Publications

2 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 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.3717588).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SLC6A3NM_001044.5 linkc.1838C>T p.Thr613Met missense_variant, splice_region_variant Exon 14 of 15 ENST00000270349.12 NP_001035.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SLC6A3ENST00000270349.12 linkc.1838C>T p.Thr613Met missense_variant, splice_region_variant Exon 14 of 15 1 NM_001044.5 ENSP00000270349.9
SLC6A3ENST00000512002.2 linkn.219C>T splice_region_variant, non_coding_transcript_exon_variant Exon 2 of 3 1
SLC6A3ENST00000713696.1 linkc.*33C>T splice_region_variant Exon 14 of 15 ENSP00000519000.1
SLC6A3ENST00000713696.1 linkc.*33C>T 3_prime_UTR_variant Exon 14 of 15 ENSP00000519000.1

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
151936
Hom.:
0
Cov.:
33
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:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000491
AC:
1
AN:
203686
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000323
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000700
AC:
10
AN:
1429564
Hom.:
0
Cov.:
31
AF XY:
0.00000565
AC XY:
4
AN XY:
708338
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32778
American (AMR)
AF:
0.0000240
AC:
1
AN:
41604
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25584
East Asian (EAS)
AF:
0.00
AC:
0
AN:
38284
South Asian (SAS)
AF:
0.00
AC:
0
AN:
82420
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51138
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5736
European-Non Finnish (NFE)
AF:
0.00000732
AC:
8
AN:
1093042
Other (OTH)
AF:
0.0000170
AC:
1
AN:
58978
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.455
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
AF:
0.0000197
AC:
3
AN:
151936
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74184
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41366
American (AMR)
AF:
0.00
AC:
0
AN:
15260
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5154
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4788
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10590
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.0000441
AC:
3
AN:
67992
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.608
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
Bravo
AF:
0.0000227
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000233
AC:
2

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Parkinsonism-dystonia, infantile Uncertain:1
Aug 26, 2021
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces threonine with methionine at codon 613 of the SLC6A3 protein (p.Thr613Met). The threonine residue is moderately conserved and there is a moderate physicochemical difference between threonine and methionine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with SLC6A3-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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.

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.15
BayesDel_addAF
Benign
-0.032
T
BayesDel_noAF
Benign
-0.28
CADD
Pathogenic
29
DANN
Uncertain
1.0
DEOGEN2
Benign
0.38
T
Eigen
Benign
0.10
Eigen_PC
Benign
0.10
LIST_S2
Uncertain
0.93
D
M_CAP
Uncertain
0.093
D
MetaRNN
Benign
0.37
T
MetaSVM
Benign
-0.55
T
MutationAssessor
Uncertain
2.2
M
PhyloP100
2.1
PrimateAI
Benign
0.48
T
PROVEAN
Benign
-1.9
N
Sift
Benign
0.044
D
Sift4G
Uncertain
0.027
D
Vest4
0.44
ClinPred
0.86
D
GERP RS
3.3
Varity_R
0.041
gMVP
0.71
Mutation Taster
=86/14
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.0058
dbscSNV1_RF
Benign
0.11
SpliceAI score (max)
0.16
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: rs372722904; hg19: chr5-1401031; COSMIC: COSV99548744; API