Genetic Variant SLC6A4:c.1818+948C>T (chr17-30202224-G-A) – ACMG Classification: Benign (-9 pts)

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBS1BS2_Supporting

The NM_001045.6(SLC6A4):c.1818+948C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0196 in 152,210 control chromosomes in the GnomAD database, including 41 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.020 ( 41 hom., cov: 33)

Consequence

SLC6A4
NM_001045.6 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.22

Publications

4 publications found

Variant links:

Genes affected

SLC6A4 (HGNC:11050): (solute carrier family 6 member 4) This gene encodes an integral membrane protein that transports the neurotransmitter serotonin from synaptic spaces into presynaptic neurons. The encoded protein terminates the action of serotonin and recycles it in a sodium-dependent manner. This protein is a target of psychomotor stimulants, such as amphetamines and cocaine, and is a member of the sodium:neurotransmitter symporter family. A repeat length polymorphism in the promoter of this gene has been shown to affect the rate of serotonin uptake. There have been conflicting results in the literature about the possible effect, if any, that this polymorphism may play in behavior and depression. [provided by RefSeq, May 2019]

SLC6A4 Gene-Disease associations (from GenCC):

autism spectrum disorder
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

SLC6A4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.96).

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0196 (2980/152210) while in subpopulation NFE AF = 0.0277 (1881/68018). AF 95% confidence interval is 0.0266. There are 41 homozygotes in GnomAd4. There are 1498 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High AC in GnomAd4 at 2980 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC6A4	NM_001045.6 link	c.1818+948C>T		intron_variant	Intron 14 of 14	ENST00000650711.1	NP_001036.1	P31645-1B2R7Y7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC6A4	ENST00000650711.1 link	c.1818+948C>T		intron_variant	Intron 14 of 14		NM_001045.6	ENSP00000498537.1		P31645-1

Frequencies

GnomAD3 genomes

AF:

0.0196

AC:

2980

AN:

152092

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00514

Gnomad AMI

AF:

0.0197

Gnomad AMR

AF:

0.00989

Gnomad ASJ

AF:

0.0113

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00974

Gnomad FIN

AF:

0.0562

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0277

Gnomad OTH

AF:

0.0167

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome

AF:

0.0196

AC:

2980

AN:

152210

Hom.:

Cov.:

AF XY:

0.0201

AC XY:

1498

AN XY:

74400

show subpopulations

African (AFR)

AF:

0.00513

AC:

213

AN:

41538

American (AMR)

AF:

0.00988

AC:

151

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.0113

AC:

AN:

3466

East Asian (EAS)

AF:

0.000193

AC:

AN:

5186

South Asian (SAS)

AF:

0.00975

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.0562

AC:

595

AN:

10580

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0277

AC:

1881

AN:

68018

Other (OTH)

AF:

0.0166

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

143

285

428

570

713

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

108

144

180

<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:

0.0240

Hom.:

118

Bravo

AF:

0.0157

Asia WGS

AF:

0.00491

AC:

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.96

CADD

Benign

0.91

(source)

DANN

Benign

0.69

PhyloP100

-1.2

Mutation Taster

=100/0

polymorphism

(source)

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over