rs61734338

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_006996.3(SLC19A2):c.824G>T(p.Arg275Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000175 in 1,613,916 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 17/22 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. R275C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00083 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 2 hom. )

Consequence

SLC19A2
NM_006996.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 0.835

Publications

4 publications found

Variant links:

Genes affected

SLC19A2 (HGNC:10938): (solute carrier family 19 member 2) This gene encodes the thiamin transporter protein. Mutations in this gene cause thiamin-responsive megaloblastic anemia syndrome (TRMA), which is an autosomal recessive disorder characterized by diabetes mellitus, megaloblastic anemia and sensorineural deafness. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Feb 2016]

SLC19A2 Gene-Disease associations (from GenCC):

thiamine-responsive megaloblastic anemia syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia, Genomics England PanelApp

SLC19A2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0074035227).

BP6

Variant 1-169470170-C-A is Benign according to our data. Variant chr1-169470170-C-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 393365.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000828 (126/152232) while in subpopulation AFR AF = 0.00294 (122/41538). AF 95% confidence interval is 0.00251. There are 0 homozygotes in GnomAd4. There are 63 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC19A2	NM_006996.3 link	c.824G>T	p.Arg275Leu	missense_variant	Exon 3 of 6	ENST00000236137.10	NP_008927.1	O60779-1A0A024R928
SLC19A2	NM_001319667.1 link	c.221G>T	p.Arg74Leu	missense_variant	Exon 2 of 5		NP_001306596.1	O60779-2A0A024R8Y5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SLC19A2	ENST00000236137.10 link	c.824G>T	p.Arg275Leu	missense_variant	Exon 3 of 6	1	NM_006996.3	ENSP00000236137.5	O60779-1
SLC19A2	ENST00000367804.4 link	c.221G>T	p.Arg74Leu	missense_variant	Exon 2 of 5	1		ENSP00000356778.3	O60779-2
SLC19A2	ENST00000646596.1 link	c.824G>T	p.Arg275Leu	missense_variant	Exon 3 of 6			ENSP00000494404.1	A0A2R8Y5B5

Frequencies

GnomAD3 genomes

AF:

0.000828

AC:

126

AN:

152114

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00295

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000267

AC:

AN:

251252

AF XY:

0.000177

show subpopulations

Gnomad AFR exome

AF:

0.00363

Gnomad AMR exome

AF:

0.000232

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000107

AC:

157

AN:

1461684

Hom.:

Cov.:

AF XY:

0.0000963

AC XY:

AN XY:

727138

show subpopulations

African (AFR)

AF:

0.00379

AC:

127

AN:

33466

American (AMR)

AF:

0.000313

AC:

AN:

44690

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111872

Other (OTH)

AF:

0.000232

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.464

Heterozygous variant carriers

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:

0.000828

AC:

126

AN:

152232

Hom.:

Cov.:

AF XY:

0.000847

AC XY:

AN XY:

74424

show subpopulations

African (AFR)

AF:

0.00294

AC:

122

AN:

41538

American (AMR)

AF:

0.000262

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68010

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.000368

Hom.:

Bravo

AF:

0.00117

ESP6500AA

AF:

0.00363

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000362

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:2

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

May 15, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Monogenic diabetes

Uncertain:1

Oct 13, 2017

Personalized Diabetes Medicine Program, University of Maryland School of Medicine

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:research

ACMG criteria: PP3 (2 predictors), BP4 (9 predictors)=VUS -

Megaloblastic anemia, thiamine-responsive, with diabetes mellitus and sensorineural deafness

Uncertain:1

Mar 01, 2022

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The SLC19A2 c.824G>T; p.Arg275Leu variant (rs61734338), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 393365). This variant is found in the African/African-American population with an allele frequency of 0.34% (84/24956 alleles, including a single homozygote) in the Genome Aggregation Database. The arginine at codon 275 is weakly conserved, and computational analyses are uncertain whether this variant is neutral or deleterious (REVEL: 0.228). While the high population frequency suggests that this is likely a benign variant, given the lack of clinical and functional data, the significance of this variant is uncertain at this time. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.095

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.31

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.12

T;.;T;.

Eigen

Benign

-0.93

Eigen_PC

Benign

-0.75

FATHMM_MKL

Benign

0.13

LIST_S2

Benign

0.77

T;T;.;T

M_CAP

Benign

0.019

MetaRNN

Benign

0.0074

T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.43

N;.;N;.

PhyloP100

0.83

PrimateAI

Benign

0.35

PROVEAN

Benign

-0.080

N;N;.;.

REVEL

Benign

0.23

Sift

Benign

0.69

T;T;.;.

Sift4G

Benign

0.40

T;T;.;.

Polyphen

0.0

B;B;B;.

Vest4

0.30

MVP

0.38

MPC

0.21

ClinPred

0.026

GERP RS

1.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.056

gMVP

0.46

Mutation Taster

=87/13

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

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over