rs145288025

Positions:

chr2-227695916-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_025243.4(SLC19A3):c.1145G>A(p.Ser382Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000159 in 1,614,080 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00069 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00010 ( 0 hom. )

Consequence

SLC19A3
NM_025243.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: -0.332

Variant links:

Genes affected

SLC19A3 (HGNC:16266): (solute carrier family 19 member 3) This gene encodes a ubiquitously expressed transmembrane thiamine transporter that lacks folate transport activity. Mutations in this gene cause biotin-responsive basal ganglia disease (BBGD); a recessive disorder manifested in childhood that progresses to chronic encephalopathy, dystonia, quadriparesis, and death if untreated. Patients with BBGD have bilateral necrosis in the head of the caudate nucleus and in the putamen. Administration of high doses of biotin in the early progression of the disorder eliminates pathological symptoms while delayed treatment results in residual paraparesis, mild cognitive disability, or dystonia. Administration of thiamine is ineffective in the treatment of this disorder. Experiments have failed to show that this protein can transport biotin. Mutations in this gene also cause a Wernicke's-like encephalopathy.[provided by RefSeq, Jan 2010]

SLC19A3 links:

SLC19A3 (HGNC:):

SLC19A3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.020988911).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC19A3	NM_025243.4 linkuse as main transcript	c.1145G>A	p.Ser382Asn	missense_variant	4/6	ENST00000644224.2	NP_079519.1	Q9BZV2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC19A3	ENST00000644224.2 linkuse as main transcript	c.1145G>A	p.Ser382Asn	missense_variant	4/6		NM_025243.4	ENSP00000495385.1		Q9BZV2

Frequencies

GnomAD3 genomes

AF:

0.000690

AC:

105

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00229

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.000247

AC:

AN:

251478

Hom.:

AF XY:

0.000177

AC XY:

AN XY:

135912

show subpopulations

Gnomad AFR exome

AF:

0.00234

Gnomad AMR exome

AF:

0.000405

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000791

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000103

AC:

151

AN:

1461866

Hom.:

Cov.:

AF XY:

0.0000949

AC XY:

AN XY:

727232

show subpopulations

Gnomad4 AFR exome

AF:

0.00182

Gnomad4 AMR exome

AF:

0.000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000495

Gnomad4 OTH exome

AF:

0.000199

GnomAD4 genome

AF:

0.000690

AC:

105

AN:

152214

Hom.:

Cov.:

AF XY:

0.000672

AC XY:

AN XY:

74412

show subpopulations

Gnomad4 AFR

AF:

0.00229

Gnomad4 AMR

AF:

0.000458

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000947

Alfa

AF:

0.000162

Hom.:

Bravo

AF:

0.000888

ESP6500AA

AF:

0.00182

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000354

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000237

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jul 19, 2016	- -
Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Jun 13, 2024	Observed with another variant in the opposite allele (in trans) in patient with congenital diaphragmatic hernia, seizures, and dysmorphic features in published literature; however, a pathogenic variant in another gene was also identified (PMID: 37589195); In silico analysis indicates that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 37589195) -
Uncertain significance, criteria provided, single submitter	clinical testing	Athena Diagnostics	Jun 16, 2020	- -

Biotin-responsive basal ganglia disease

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 2018	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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.46

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.60

D;D;.

Eigen

Benign

-0.24

Eigen_PC

Benign

-0.38

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.59

.;T;T

M_CAP

Benign

0.045

MetaRNN

Benign

0.021

T;T;T

MetaSVM

Benign

-0.41

MutationAssessor

Pathogenic

3.2

M;M;.

PrimateAI

Benign

0.32

PROVEAN

Benign

-1.7

.;N;.

REVEL

Uncertain

0.47

Sift

Benign

0.059

.;T;.

Sift4G

Benign

0.32

.;T;.

Polyphen

0.84

P;P;.

Vest4

0.31

MVP

0.86

MPC

0.084

ClinPred

0.065

GERP RS

0.97

Varity_R

0.077

gMVP

0.25

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over