rs756708244

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_006996.3(SLC19A2):​c.980G>T​(p.Arg327Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000744 in 1,613,774 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R327C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

SLC19A2
NM_006996.3 missense

Scores

4
15

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.47

Publications

2 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.25498185).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SLC19A2NM_006996.3 linkc.980G>T p.Arg327Leu missense_variant Exon 3 of 6 ENST00000236137.10 NP_008927.1 O60779-1A0A024R928
SLC19A2NM_001319667.1 linkc.377G>T p.Arg126Leu missense_variant Exon 2 of 5 NP_001306596.1 O60779-2A0A024R8Y5

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SLC19A2ENST00000236137.10 linkc.980G>T p.Arg327Leu missense_variant Exon 3 of 6 1 NM_006996.3 ENSP00000236137.5 O60779-1
SLC19A2ENST00000367804.4 linkc.377G>T p.Arg126Leu missense_variant Exon 2 of 5 1 ENSP00000356778.3 O60779-2
SLC19A2ENST00000646596.1 linkc.980G>T p.Arg327Leu missense_variant Exon 3 of 6 ENSP00000494404.1 A0A2R8Y5B5

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
152046
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000242
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000398
AC:
1
AN:
251432
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:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000879
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000753
AC:
11
AN:
1461728
Hom.:
0
Cov.:
32
AF XY:
0.00000413
AC XY:
3
AN XY:
727164
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33464
American (AMR)
AF:
0.00
AC:
0
AN:
44716
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26130
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86254
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5756
European-Non Finnish (NFE)
AF:
0.00000989
AC:
11
AN:
1111898
Other (OTH)
AF:
0.00
AC:
0
AN:
60390
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.448
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
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:
0.00000658
AC:
1
AN:
152046
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74274
show subpopulations
African (AFR)
AF:
0.0000242
AC:
1
AN:
41372
American (AMR)
AF:
0.00
AC:
0
AN:
15254
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5190
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4814
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68016
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
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
Bravo
AF:
0.0000113
ExAC
AF:
0.00000824
AC:
1

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Monogenic diabetes Uncertain:1
Mar 03, 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 (4 predictors), BP4 (7 predictors) -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.12
BayesDel_addAF
Uncertain
0.013
T
BayesDel_noAF
Benign
-0.22
CADD
Benign
21
DANN
Uncertain
0.99
DEOGEN2
Uncertain
0.64
D;.;D;.
Eigen
Benign
-0.37
Eigen_PC
Benign
-0.25
FATHMM_MKL
Benign
0.62
D
LIST_S2
Benign
0.82
T;T;.;T
M_CAP
Benign
0.041
D
MetaRNN
Benign
0.25
T;T;T;T
MetaSVM
Benign
-0.94
T
MutationAssessor
Benign
1.8
L;.;L;.
PhyloP100
1.5
PrimateAI
Benign
0.27
T
PROVEAN
Uncertain
-2.9
D;D;.;.
REVEL
Benign
0.23
Sift
Benign
0.050
D;T;.;.
Sift4G
Benign
0.18
T;T;.;.
Polyphen
0.055
B;P;B;.
Vest4
0.37
MutPred
0.53
Loss of solvent accessibility (P = 0.0238);.;Loss of solvent accessibility (P = 0.0238);Loss of solvent accessibility (P = 0.0238);
MVP
0.67
MPC
0.26
ClinPred
0.90
D
GERP RS
4.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.12
gMVP
0.35
Mutation Taster
=90/10
polymorphism

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

Other links and lift over

dbSNP: rs756708244; hg19: chr1-169439252; API