12-100404104-G-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The NM_139319.3(SLC17A8):c.1120G>T(p.Ala374Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000543 in 1,614,112 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00092 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00050 ( 4 hom. )

Consequence

SLC17A8
NM_139319.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:4

Conservation

PhyloP100: 10.0

Publications

7 publications found

Variant links:

Genes affected

SLC17A8 (HGNC:20151): (solute carrier family 17 member 8) This gene encodes a vesicular glutamate transporter. The encoded protein transports the neurotransmitter glutamate into synaptic vesicles before it is released into the synaptic cleft. Mutations in this gene are the cause of autosomal-dominant nonsyndromic type 25 deafness. Alternate splicing results in multiple transcript variants.[provided by RefSeq, May 2010]

SLC17A8 Gene-Disease associations (from GenCC):

nonsyndromic genetic hearing loss
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
autosomal dominant nonsyndromic hearing loss 25
Inheritance: AD, Unknown Classification: STRONG, LIMITED Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)
autosomal dominant nonsyndromic hearing loss
Inheritance: AD Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

SLC17A8 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 (MetaRNN=0.022830486).

BP6

Variant 12-100404104-G-T is Benign according to our data. Variant chr12-100404104-G-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 225471.

BS2

High AC in GnomAd4 at 140 AD,Unknown gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC17A8	NM_139319.3 link	c.1120G>T	p.Ala374Ser	missense_variant	Exon 9 of 12	ENST00000323346.10	NP_647480.1
SLC17A8	NM_001145288.2 link	c.970G>T	p.Ala324Ser	missense_variant	Exon 8 of 11		NP_001138760.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
SLC17A8	ENST00000323346.10 link	c.1120G>T	p.Ala374Ser	missense_variant	Exon 9 of 12	1	NM_139319.3	ENSP00000316909.4
SLC17A8	ENST00000392989.3 link	c.970G>T	p.Ala324Ser	missense_variant	Exon 8 of 11	1		ENSP00000376715.3
SLC17A8	ENST00000547922.1 link	n.195G>T		non_coding_transcript_exon_variant	Exon 2 of 2	3

Frequencies

GnomAD3 genomes

AF:

0.000920

AC:

140

AN:

152152

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:

0.00577

Gnomad SAS

AF:

0.00249

Gnomad FIN

AF:

0.00538

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000588

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.00125

AC:

314

AN:

251366

AF XY:

0.00135

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00544

Gnomad FIN exome

AF:

0.00448

Gnomad NFE exome

AF:

0.000282

Gnomad OTH exome

AF:

0.000816

GnomAD4 exome

AF:

0.000504

AC:

737

AN:

1461842

Hom.:

Cov.:

AF XY:

0.000573

AC XY:

417

AN XY:

727232

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00403

AC:

160

AN:

39700

South Asian (SAS)

AF:

0.00225

AC:

194

AN:

86254

European-Finnish (FIN)

AF:

0.00453

AC:

242

AN:

53412

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000764

AC:

AN:

1111984

Other (OTH)

AF:

0.000911

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.476

Heterozygous variant carriers

136

182

227

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.000919

AC:

140

AN:

152270

Hom.:

Cov.:

AF XY:

0.00126

AC XY:

AN XY:

74454

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41550

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00578

AC:

AN:

5186

South Asian (SAS)

AF:

0.00249

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00538

AC:

AN:

10604

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000588

AC:

AN:

68032

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.000467

Hom.:

Bravo

AF:

0.000302

ExAC

AF:

0.00124

AC:

151

Asia WGS

AF:

0.00173

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:4

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Autosomal dominant nonsyndromic hearing loss 25

Uncertain:2Benign:1

Apr 22, 2020

Foundation for Research in Genetics and Endocrinology, FRIGE's Institute of Human Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

A heterozygous missense variation in exon 9 of the SLC17A5 gene that results in the amino acid substitution of Serine for Alanine at codon 374 was detected. The observed variant c.1120G>T (p.Ala374Ser) has a minor allele frequency of 0.2% and 0.12% in the 1000 genomes and ExAC databases respectively. The observed variant has previously been reported in a patient affected with deafness (Miyagawa et al. 2013) and is reported as a variant of uncertain significance in the ClinVar database. The in silico prediction of the variant are possibly damaging by PolyPhen-2 (HumDiv) and damaging by SIFT, LRT and MutationTaster2. The reference codon is conserved across species. In summary, the variant meets our criteria to be classified as a variant of uncertain significance. -

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Mar 18, 2016

Soonchunhyang University Bucheon Hospital, Soonchunhyang University Medical Center

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:reference population

- -

not provided

Benign:2

Oct 30, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Nov 25, 2019

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 23967202, 30245029) -

SLC17A8-related disorder

Benign:1

Apr 05, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.64

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Uncertain

0.060

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.67

D;.

Eigen

Pathogenic

0.85

Eigen_PC

Pathogenic

0.85

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

D;D

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.023

T;T

MetaSVM

Benign

-0.59

MutationAssessor

Benign

1.8

L;.

PhyloP100

PrimateAI

Uncertain

0.75

PROVEAN

Uncertain

-2.9

D;D

REVEL

Uncertain

0.47

Sift

Uncertain

0.0030

D;D

Sift4G

Uncertain

0.0050

D;D

Polyphen

1.0

D;D

Vest4

0.77

MVP

0.64

MPC

0.61

ClinPred

0.081

GERP RS

5.6

Varity_R

0.71

gMVP

0.77

Mutation Taster

=49/51

disease causing

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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