rs782028471

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_005629.4(SLC6A8):​c.1627G>A​(p.Glu543Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000273 in 1,209,700 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 12 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E543Q) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 1 hem., cov: 25)
Exomes 𝑓: 0.000028 ( 0 hom. 11 hem. )

Consequence

SLC6A8
NM_005629.4 missense

Scores

1
16

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 0.537

Publications

1 publications found
Variant links:
Genes affected
SLC6A8 (HGNC:11055): (solute carrier family 6 member 8) The protein encoded by this gene is a plasma membrane protein whose function is to transport creatine into and out of cells. Defects in this gene can result in X-linked creatine deficiency syndrome. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]
SLC6A8 Gene-Disease associations (from GenCC):
  • creatine transporter deficiency
    Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, ClinGen, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.089541465).
BP6
Variant X-153694749-G-A is Benign according to our data. Variant chrX-153694749-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 212212.
BS2
High Hemizygotes in GnomAdExome4 at 11 XL gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SLC6A8NM_005629.4 linkc.1627G>A p.Glu543Lys missense_variant Exon 12 of 13 ENST00000253122.10 NP_005620.1 P48029-1X5D9C4
SLC6A8NM_001142805.2 linkc.1597G>A p.Glu533Lys missense_variant Exon 12 of 13 NP_001136277.1 P48029Q59EV7
SLC6A8NM_001142806.1 linkc.1282G>A p.Glu428Lys missense_variant Exon 12 of 13 NP_001136278.1 P48029-4

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SLC6A8ENST00000253122.10 linkc.1627G>A p.Glu543Lys missense_variant Exon 12 of 13 1 NM_005629.4 ENSP00000253122.5 P48029-1
SLC6A8ENST00000430077.6 linkc.1282G>A p.Glu428Lys missense_variant Exon 12 of 13 2 ENSP00000403041.2 P48029-4
SLC6A8ENST00000485324.1 linkn.1934G>A non_coding_transcript_exon_variant Exon 5 of 6 2
SLC6A8ENST00000413787.1 linkc.*173G>A downstream_gene_variant 5 ENSP00000400463.1 H7C1I2

Frequencies

GnomAD3 genomes
AF:
0.0000178
AC:
2
AN:
112486
Hom.:
0
Cov.:
25
show subpopulations
Gnomad AFR
AF:
0.0000323
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:
0.0000188
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000110
AC:
2
AN:
182609
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000724
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000123
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000283
AC:
31
AN:
1097214
Hom.:
0
Cov.:
38
AF XY:
0.0000303
AC XY:
11
AN XY:
362958
show subpopulations
African (AFR)
AF:
0.0000379
AC:
1
AN:
26374
American (AMR)
AF:
0.0000284
AC:
1
AN:
35197
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
19379
East Asian (EAS)
AF:
0.00
AC:
0
AN:
30205
South Asian (SAS)
AF:
0.00
AC:
0
AN:
54097
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
40388
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
3644
European-Non Finnish (NFE)
AF:
0.0000333
AC:
28
AN:
841902
Other (OTH)
AF:
0.0000217
AC:
1
AN:
46028
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.495
Heterozygous variant carriers
0
2
4
5
7
9
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
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:
0.0000178
AC:
2
AN:
112486
Hom.:
0
Cov.:
25
AF XY:
0.0000288
AC XY:
1
AN XY:
34678
show subpopulations
African (AFR)
AF:
0.0000323
AC:
1
AN:
30998
American (AMR)
AF:
0.00
AC:
0
AN:
10735
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
2659
East Asian (EAS)
AF:
0.00
AC:
0
AN:
3563
South Asian (SAS)
AF:
0.00
AC:
0
AN:
2757
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
6174
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
240
European-Non Finnish (NFE)
AF:
0.0000188
AC:
1
AN:
53159
Other (OTH)
AF:
0.00
AC:
0
AN:
1516
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.00
Hom.:
0
ExAC
AF:
0.0000165
AC:
2
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:3Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not specified Uncertain:1
Apr 23, 2015
Genetic Services Laboratory, University of Chicago
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Creatine transporter deficiency Uncertain:1
Jul 19, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 543 of the SLC6A8 protein (p.Glu543Lys). This variant is present in population databases (rs782028471, gnomAD 0.008%). This variant has not been reported in the literature in individuals affected with SLC6A8-related conditions. ClinVar contains an entry for this variant (Variation ID: 212212). 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 SLC6A8 protein function. 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. -

Creatine deficiency syndrome 1 Uncertain:1
Nov 11, 2019
Natera, Inc.
Significance:Uncertain significance
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

Inborn genetic diseases Benign:1
Sep 02, 2024
Ambry Genetics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.054
BayesDel_addAF
Benign
-0.38
T
BayesDel_noAF
Benign
-0.60
CADD
Benign
0.010
DANN
Benign
0.57
DEOGEN2
Benign
0.083
T;.
FATHMM_MKL
Benign
0.10
N
LIST_S2
Benign
0.81
T;T
M_CAP
Uncertain
0.17
D
MetaRNN
Benign
0.090
T;T
MetaSVM
Benign
-1.0
T
MutationAssessor
Benign
-1.0
N;.
PhyloP100
0.54
PrimateAI
Benign
0.39
T
PROVEAN
Benign
0.70
N;N
REVEL
Benign
0.15
Sift
Benign
0.63
T;T
Sift4G
Benign
1.0
T;T
Polyphen
0.0020
B;.
Vest4
0.23
MVP
0.28
MPC
0.17
ClinPred
0.016
T
GERP RS
-6.8
Varity_R
0.067
gMVP
0.71
Mutation Taster
=86/14
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.15
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: rs782028471; hg19: chrX-152960204; API