rs199789515

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2PP2PP3_Moderate

The NM_000112.4(SLC26A2):​c.797C>T​(p.Thr266Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000322 in 1,614,130 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000033 ( 0 hom. )

Consequence

SLC26A2
NM_000112.4 missense

Scores

8
9
1

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 7.91

Publications

4 publications found
Variant links:
Genes affected
SLC26A2 (HGNC:10994): (solute carrier family 26 member 2) The diastrophic dysplasia sulfate transporter is a transmembrane glycoprotein implicated in the pathogenesis of several human chondrodysplasias. It apparently is critical in cartilage for sulfation of proteoglycans and matrix organization. [provided by RefSeq, Jul 2008]
SLC26A2 Gene-Disease associations (from GenCC):
  • achondrogenesis type IB
    Inheritance: AR Classification: DEFINITIVE, MODERATE, SUPPORTIVE Submitted by: ClinGen, G2P, Ambry Genetics, Orphanet
  • atelosteogenesis type II
    Inheritance: AR Classification: DEFINITIVE, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, ClinGen, Orphanet
  • diastrophic dysplasia
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, ClinGen, Labcorp Genetics (formerly Invitae), Orphanet
  • multiple epiphyseal dysplasia
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • multiple epiphyseal dysplasia type 4
    Inheritance: AR Classification: DEFINITIVE, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, G2P
  • SLC26A2-related skeletal dysplasia
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • skeletal dysplasia
    Inheritance: AR Classification: STRONG Submitted by: PanelApp Australia

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 26 curated pathogenic missense variants (we use a threshold of 10). The gene has 6 curated benign missense variants. Gene score misZ: 0.031413 (below the threshold of 3.09). Trascript score misZ: 1.4892 (below the threshold of 3.09). GenCC associations: The gene is linked to multiple epiphyseal dysplasia type 4, atelosteogenesis type II, achondrogenesis type IB, diastrophic dysplasia, multiple epiphyseal dysplasia.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.877

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000112.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SLC26A2
NM_000112.4
MANE Select
c.797C>Tp.Thr266Ile
missense
Exon 3 of 3NP_000103.2P50443

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SLC26A2
ENST00000286298.5
TSL:1 MANE Select
c.797C>Tp.Thr266Ile
missense
Exon 3 of 3ENSP00000286298.4P50443
SLC26A2
ENST00000862081.1
c.797C>Tp.Thr266Ile
missense
Exon 4 of 4ENSP00000532140.1
SLC26A2
ENST00000862082.1
c.797C>Tp.Thr266Ile
missense
Exon 3 of 3ENSP00000532141.1

Frequencies

GnomAD3 genomes
AF:
0.0000263
AC:
4
AN:
152202
Hom.:
0
Cov.:
32
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:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000588
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000438
AC:
11
AN:
251316
AF XY:
0.0000368
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:
0.0000880
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.0000328
AC:
48
AN:
1461810
Hom.:
0
Cov.:
33
AF XY:
0.0000358
AC XY:
26
AN XY:
727208
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33476
American (AMR)
AF:
0.00
AC:
0
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26132
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39698
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86254
European-Finnish (FIN)
AF:
0.0000187
AC:
1
AN:
53418
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000396
AC:
44
AN:
1111946
Other (OTH)
AF:
0.0000497
AC:
3
AN:
60394
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.492
Heterozygous variant carriers
0
4
9
13
18
22
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:
0.0000263
AC:
4
AN:
152320
Hom.:
0
Cov.:
32
AF XY:
0.0000134
AC XY:
1
AN XY:
74480
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41564
American (AMR)
AF:
0.00
AC:
0
AN:
15304
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5188
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4824
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10624
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000588
AC:
4
AN:
68026
Other (OTH)
AF:
0.00
AC:
0
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome 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
Alfa
AF:
0.0000464
Hom.:
0
Bravo
AF:
0.0000189
ExAC
AF:
0.0000576
AC:
7
Asia WGS
AF:
0.000289
AC:
1
AN:
3478
EpiCase
AF:
0.00
EpiControl
AF:
0.000119

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Multiple epiphyseal dysplasia type 4 (1)
-
1
-
not specified (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.90
BayesDel_addAF
Pathogenic
0.32
D
BayesDel_noAF
Pathogenic
0.40
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.81
D
Eigen
Uncertain
0.65
Eigen_PC
Uncertain
0.65
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.97
D
M_CAP
Uncertain
0.12
D
MetaRNN
Pathogenic
0.88
D
MetaSVM
Uncertain
0.57
D
MutationAssessor
Benign
1.6
L
PhyloP100
7.9
PrimateAI
Uncertain
0.65
T
PROVEAN
Pathogenic
-4.7
D
REVEL
Pathogenic
0.90
Sift
Uncertain
0.023
D
Sift4G
Uncertain
0.0020
D
Polyphen
1.0
D
Vest4
0.80
MVP
1.0
MPC
0.33
ClinPred
0.43
T
GERP RS
5.1
Varity_R
0.60
gMVP
0.88
Mutation Taster
=14/86
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
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: rs199789515; hg19: chr5-149359953; API