NM_001044.5:c.1768-7_1768-6delCT

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BS1_Supporting

The NM_001044.5(SLC6A3):c.1768-7_1768-6delCT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000233 in 1,590,956 control chromosomes in the GnomAD database, including 1 homozygotes. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 1 hom., cov: 33)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

SLC6A3
NM_001044.5 splice_region, intron

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.833

Publications

0 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

SLC6A3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000046 (7/152288) while in subpopulation EAS AF = 0.00136 (7/5162). AF 95% confidence interval is 0.000636. There are 1 homozygotes in GnomAd4. There are 2 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC6A3	NM_001044.5 link	c.1768-7_1768-6delCT		splice_region_variant, intron_variant	Intron 13 of 14	ENST00000270349.12	NP_001035.1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein
SLC6A3	ENST00000270349.12 link	c.1768-7_1768-6delCT	splice_region_variant, intron_variant	Intron 13 of 14	1	NM_001044.5	ENSP00000270349.9
SLC6A3	ENST00000512002.2 link	n.149-7_149-6delCT	splice_region_variant, intron_variant	Intron 1 of 2	1
SLC6A3	ENST00000713696.1 link	c.1682-7_1682-6delCT	splice_region_variant, intron_variant	Intron 13 of 14			ENSP00000519000.1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152170

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:

0.00135

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000798

AC:

AN:

212956

AF XY:

0.0000785

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00102

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000209

AC:

AN:

1438668

Hom.:

AF XY:

0.0000154

AC XY:

AN XY:

713504

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33042

American (AMR)

AF:

0.0000234

AC:

AN:

42724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25694

East Asian (EAS)

AF:

0.000565

AC:

AN:

38908

South Asian (SAS)

AF:

0.00

AC:

AN:

83292

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51746

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5750

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1098108

Other (OTH)

AF:

0.000118

AC:

AN:

59404

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.443

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:

0.0000460

AC:

AN:

152288

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74468

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41566

American (AMR)

AF:

0.00

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00136

AC:

AN:

5162

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.545

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000604

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Parkinsonism-dystonia, infantile

Uncertain:1

Jun 20, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change falls in intron 13 of the SLC6A3 gene. It does not directly change the encoded amino acid sequence of the SLC6A3 protein. It affects a nucleotide within the consensus splice site. This variant is present in population databases (rs781468421, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with SLC6A3-related conditions. ClinVar contains an entry for this variant (Variation ID: 538068). Variants that disrupt the consensus splice site are a relatively common cause of aberrant splicing (PMID: 17576681, 9536098). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant is not likely to affect RNA splicing. 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

PhyloP100

0.83

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over