Genetic Variant SLC17A1:p.Trp458Cys (chr6-25798815-C-A) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PP3_Strong

The NM_005074.5(SLC17A1):c.1374G>T(p.Trp458Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,457,254 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

SLC17A1
NM_005074.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.97

Publications

5 publications found

Variant links:

Genes affected

SLC17A1 (HGNC:10929): (solute carrier family 17 member 1) Predicted to enable sialic acid transmembrane transporter activity. Involved in urate metabolic process and urate transport. Located in apical plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

SLC17A1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.958

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC17A1	NM_005074.5 link	c.1374G>T	p.Trp458Cys	missense_variant	Exon 12 of 13	ENST00000244527.10	NP_005065.2	Q14916-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC17A1	ENST00000244527.10 link	c.1374G>T	p.Trp458Cys	missense_variant	Exon 12 of 13	5	NM_005074.5	ENSP00000244527.4		Q14916-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251144

AF XY:

0.00000737

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:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.86e-7

AC:

AN:

1457254

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

724720

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33434

American (AMR)

AF:

0.00

AC:

AN:

44686

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26004

East Asian (EAS)

AF:

0.00

AC:

AN:

39648

South Asian (SAS)

AF:

0.00

AC:

AN:

85280

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53200

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

9.02e-7

AC:

AN:

1109112

Other (OTH)

AF:

0.00

AC:

AN:

60150

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.98

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

-0.070

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.46

T;T;.

Eigen

Pathogenic

0.72

Eigen_PC

Uncertain

0.59

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.95

.;D;D

M_CAP

Benign

0.068

MetaRNN

Pathogenic

0.96

D;D;D

MetaSVM

Uncertain

-0.098

MutationAssessor

Pathogenic

3.7

H;H;.

PhyloP100

3.0

PrimateAI

Uncertain

0.48

PROVEAN

Pathogenic

-12

D;D;D

REVEL

Uncertain

0.42

Sift

Pathogenic

0.0

D;D;D

Sift4G

Pathogenic

0.0

D;D;D

Polyphen

1.0

D;D;D

Vest4

0.78

MutPred

0.87

Gain of methylation at K462 (P = 0.1374);Gain of methylation at K462 (P = 0.1374);.;

MVP

0.71

MPC

0.63

ClinPred

1.0

GERP RS

4.0

Varity_R

0.61

gMVP

0.76

Mutation Taster

=89/11

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over