rs386833446
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Variant summary
Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PP3_Strong
The NM_000111.3(SLC26A3):āc.1136G>Cā(p.Gly379Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000149 in 1,614,044 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 (ā ā ).
Frequency
Genomes: š 0.0000066 ( 0 hom., cov: 32)
Exomes š: 0.00016 ( 0 hom. )
Consequence
SLC26A3
NM_000111.3 missense
NM_000111.3 missense
Scores
13
5
1
Clinical Significance
Conservation
PhyloP100: 7.30
Genes affected
SLC26A3 (HGNC:3018): (solute carrier family 26 member 3) The protein encoded by this gene is a transmembrane glycoprotein that transports chloride ions across the cell membrane in exchange for bicarbonate ions. It is localized to the mucosa of the lower intestinal tract, particularly to the apical membrane of columnar epithelium and some goblet cells. The protein is essential for intestinal chloride absorption, and mutations in this gene have been associated with congenital chloride diarrhea. [provided by RefSeq, Oct 2008]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 6 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.965
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
SLC26A3 | NM_000111.3 | c.1136G>C | p.Gly379Ala | missense_variant | 10/21 | ENST00000340010.10 | NP_000102.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
SLC26A3 | ENST00000340010.10 | c.1136G>C | p.Gly379Ala | missense_variant | 10/21 | 1 | NM_000111.3 | ENSP00000345873 | P1 | |
SLC26A3 | ENST00000468551.1 | n.414G>C | non_coding_transcript_exon_variant | 4/5 | 2 | |||||
SLC26A3 | ENST00000379083.7 | c.*927G>C | 3_prime_UTR_variant, NMD_transcript_variant | 10/20 | 2 | ENSP00000368375 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152178Hom.: 0 Cov.: 32
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GnomAD3 exomes AF: 0.0000239 AC: 6AN: 251036Hom.: 0 AF XY: 0.0000147 AC XY: 2AN XY: 135638
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GnomAD4 exome AF: 0.000164 AC: 240AN: 1461866Hom.: 0 Cov.: 32 AF XY: 0.000140 AC XY: 102AN XY: 727240
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GnomAD4 genome AF: 0.00000657 AC: 1AN: 152178Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74342
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ClinVar
Significance: Uncertain significance
Submissions summary: Pathogenic:1Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Congenital secretory diarrhea, chloride type Pathogenic:1Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Feb 25, 2022 | - - |
Likely pathogenic, no assertion criteria provided | literature only | Juha Muilu Group; Institute for Molecular Medicine Finland (FIMM) | - | - - |
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Oct 28, 2021 | This sequence change replaces glycine, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 379 of the SLC26A3 protein (p.Gly379Ala). This variant is present in population databases (rs386833446, gnomAD 0.005%). This missense change has been observed in individual(s) with congenital chloride diarrhea (PMID: 21394828). ClinVar contains an entry for this variant (Variation ID: 55964). 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) performed at Invitae indicates that this missense variant is expected to disrupt SLC26A3 protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Pathogenic
DANN
Uncertain
DEOGEN2
Uncertain
D
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D
MetaSVM
Pathogenic
D
MutationAssessor
Pathogenic
M
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D
REVEL
Pathogenic
Sift
Pathogenic
D
Sift4G
Pathogenic
D
Polyphen
D
Vest4
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at