rs104893920
Variant summary
Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM1PM2PP3_StrongPP5_Very_Strong
The NM_000112.4(SLC26A2):c.1273A>G(p.Asn425Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,802 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 Likely pathogenic (★★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000027 ( 0 hom. )
Consequence
SLC26A2
NM_000112.4 missense
NM_000112.4 missense
Scores
16
2
1
Clinical Significance
Conservation
PhyloP100: 9.27
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]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Pathogenic. Variant got 16 ACMG points.
PM1
?
In a transmembrane_region Helical (size 20) in uniprot entity S26A2_HUMAN there are 4 pathogenic changes around while only 1 benign (80%) in NM_000112.4
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.989
PP5
?
Variant 5-149980866-A-G is Pathogenic according to our data. Variant chr5-149980866-A-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 4093.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr5-149980866-A-G is described in Lovd as [Pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
SLC26A2 | NM_000112.4 | c.1273A>G | p.Asn425Asp | missense_variant | 3/3 | ENST00000286298.5 | |
SLC26A2 | XM_017009191.3 | c.1273A>G | p.Asn425Asp | missense_variant | 3/4 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
SLC26A2 | ENST00000286298.5 | c.1273A>G | p.Asn425Asp | missense_variant | 3/3 | 1 | NM_000112.4 | P1 | |
SLC26A2 | ENST00000503336.1 | c.372+2515A>G | intron_variant | 3 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461802Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1AN XY: 727198
GnomAD4 exome
AF:
AC:
4
AN:
1461802
Hom.:
Cov.:
34
AF XY:
AC XY:
1
AN XY:
727198
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:3Other:1
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Diastrophic dysplasia;C0265274:Achondrogenesis, type IB;C1847593:Multiple epiphyseal dysplasia type 4;C1850554:Atelosteogenesis type II Pathogenic:2
Pathogenic, criteria provided, single submitter | clinical testing | Invitae | Jun 08, 2023 | This variant is not present in population databases (gnomAD no frequency). For these reasons, this variant has been classified as Pathogenic. Experimental studies have shown that this missense change affects SLC26A2 function (PMID: 11448940). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on SLC26A2 protein function. ClinVar contains an entry for this variant (Variation ID: 4093). This missense change has been observed in individual(s) with diastrophic dysplasia (PMID: 8528239, 9342225, 21155763). This sequence change replaces asparagine, which is neutral and polar, with aspartic acid, which is acidic and polar, at codon 425 of the SLC26A2 protein (p.Asn425Asp). - |
Likely pathogenic, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Aug 23, 2021 | - - |
Achondrogenesis, type IB Pathogenic:1
Pathogenic, no assertion criteria provided | literature only | OMIM | Jan 01, 1996 | - - |
Diastrophic dysplasia Other:1
not provided, no classification provided | literature only | GeneReviews | - | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Pathogenic
D
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Pathogenic
D
LIST_S2
Pathogenic
D
M_CAP
Uncertain
D
MetaRNN
Pathogenic
D
MetaSVM
Pathogenic
D
MutationAssessor
Pathogenic
M
MutationTaster
Benign
A
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D
REVEL
Pathogenic
Sift
Pathogenic
D
Sift4G
Pathogenic
D
Polyphen
D
Vest4
MutPred
Loss of helix (P = 0.2022);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at