rs35807245
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Variant summary
Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_ModerateBP6_Very_StrongBP7BS1BS2
The NM_000342.4(SLC4A1):c.1770G>A(p.Lys590Lys) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0185 in 1,614,060 control chromosomes in the GnomAD database, including 354 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).
Frequency
Genomes: 𝑓 0.015 ( 28 hom., cov: 32)
Exomes 𝑓: 0.019 ( 326 hom. )
Consequence
SLC4A1
NM_000342.4 synonymous
NM_000342.4 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 1.08
Genes affected
SLC4A1 (HGNC:11027): (solute carrier family 4 member 1 (Diego blood group)) The protein encoded by this gene is part of the anion exchanger (AE) family and is expressed in the erythrocyte plasma membrane, where it functions as a chloride/bicarbonate exchanger involved in carbon dioxide transport from tissues to lungs. The protein comprises two domains that are structurally and functionally distinct. The N-terminal 40kDa domain is located in the cytoplasm and acts as an attachment site for the red cell skeleton by binding ankyrin. The glycosylated C-terminal membrane-associated domain contains 12-14 membrane spanning segments and carries out the stilbene disulphonate-sensitive exchange transport of anions. The cytoplasmic tail at the extreme C-terminus of the membrane domain binds carbonic anhydrase II. The encoded protein associates with the red cell membrane protein glycophorin A and this association promotes the correct folding and translocation of the exchanger. This protein is predominantly dimeric but forms tetramers in the presence of ankyrin. Many mutations in this gene are known in man, and these mutations can lead to two types of disease: destabilization of red cell membrane leading to hereditary spherocytosis, and defective kidney acid secretion leading to distal renal tubular acidosis. Other mutations that do not give rise to disease result in novel blood group antigens, which form the Diego blood group system. Southeast Asian ovalocytosis (SAO, Melanesian ovalocytosis) results from the heterozygous presence of a deletion in the encoded protein and is common in areas where Plasmodium falciparum malaria is endemic. One null mutation in this gene is known, resulting in very severe anemia and nephrocalcinosis. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -19 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.31).
BP6
Variant 17-44255703-C-T is Benign according to our data. Variant chr17-44255703-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 255907.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-44255703-C-T is described in Lovd as [Benign]. Variant chr17-44255703-C-T is described in Lovd as [Likely_benign].
BP7
Synonymous conserved (PhyloP=1.08 with no splicing effect.
BS1
Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.0149 (2263/152236) while in subpopulation AMR AF= 0.02 (306/15294). AF 95% confidence interval is 0.019. There are 28 homozygotes in gnomad4. There are 1050 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 28 AD,AR,BG gene
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| SLC4A1 | NM_000342.4 | c.1770G>A | p.Lys590Lys | synonymous_variant | 14/20 | ENST00000262418.12 | NP_000333.1 | |
| SLC4A1 | XM_011525129.3 | c.1770G>A | p.Lys590Lys | synonymous_variant | 14/19 | XP_011523431.1 | ||
| SLC4A1 | XM_005257593.6 | c.1575G>A | p.Lys525Lys | synonymous_variant | 12/18 | XP_005257650.1 | ||
| SLC4A1 | XM_011525130.2 | c.1770G>A | p.Lys590Lys | synonymous_variant | 14/18 | XP_011523432.1 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| SLC4A1 | ENST00000262418.12 | c.1770G>A | p.Lys590Lys | synonymous_variant | 14/20 | 1 | NM_000342.4 | ENSP00000262418.6 | ||
| SLC4A1 | ENST00000399246.3 | c.778-482G>A | intron_variant | 5 | ENSP00000382190.3 |
Frequencies
GnomAD3 genomes 0.0149 AC: 2263AN: 152118Hom.: 28 Cov.: 32
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GnomAD3 exomes AF: 0.0161 AC: 4060AN: 251460Hom.: 51 AF XY: 0.0163 AC XY: 2218AN XY: 135902
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GnomAD4 exome AF: 0.0188 AC: 27523AN: 1461824Hom.: 326 Cov.: 33 AF XY: 0.0183 AC XY: 13343AN XY: 727212
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GnomAD4 genome 0.0149 AC: 2263AN: 152236Hom.: 28 Cov.: 32 AF XY: 0.0141 AC XY: 1050AN XY: 74418
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ClinVar
Significance: Benign/Likely benign
Submissions summary: Benign:8
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not provided Benign:4
| Likely benign, criteria provided, single submitter | not provided | Breakthrough Genomics, Breakthrough Genomics | - | - - |
| Benign, criteria provided, single submitter | clinical testing | ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories | Nov 16, 2023 | - - |
| Benign, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jan 31, 2024 | - - |
| Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Sep 27, 2021 | - - |
Autosomal dominant distal renal tubular acidosis Benign:1
| Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
not specified Benign:1
| Benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | - | - - |
Hereditary spherocytosis type 4 Benign:1
| Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
Hemolytic anemia Benign:1
| Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
Computational scores
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Name
Calibrated prediction
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
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