rs45497993

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_000342.4(SLC4A1):c.2688T>C(p.Asp896Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0032 in 1,613,688 control chromosomes in the GnomAD database, including 152 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.017 ( 82 hom., cov: 32)

Exomes 𝑓: 0.0017 ( 70 hom. )

Consequence

SLC4A1
NM_000342.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -2.27

Publications

1 publications found

Variant links:

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]

SLC4A1 Gene-Disease associations (from GenCC):

autosomal dominant distal renal tubular acidosis
Inheritance: AD, AR Classification: STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae)
hereditary spherocytosis type 4
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
renal tubular acidosis, distal, 4, with hemolytic anemia
Inheritance: AD, AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae)
southeast Asian ovalocytosis
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
dehydrated hereditary stomatocytosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hereditary spherocytosis
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
cryohydrocytosis
Inheritance: Unknown, AD Classification: SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet

SLC4A1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.63).

BP6

Variant 17-44250506-A-G is Benign according to our data. Variant chr17-44250506-A-G is described in ClinVar as Benign. ClinVar VariationId is 255912.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-2.27 with no splicing effect.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0584 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SLC4A1	NM_000342.4 link	c.2688T>C	p.Asp896Asp	synonymous_variant	Exon 20 of 20	ENST00000262418.12	NP_000333.1	P02730-1
SLC4A1	XM_011525129.3 link	c.2598T>C	p.Asp866Asp	synonymous_variant	Exon 19 of 19		XP_011523431.1
SLC4A1	XM_005257593.6 link	c.2493T>C	p.Asp831Asp	synonymous_variant	Exon 18 of 18		XP_005257650.1	P02730-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SLC4A1	ENST00000262418.12 link	c.2688T>C	p.Asp896Asp	synonymous_variant	Exon 20 of 20	1	NM_000342.4	ENSP00000262418.6		P02730-1
SLC4A1	ENST00000399246.3 link	c.1590T>C	p.Asp530Asp	synonymous_variant	Exon 15 of 15	5		ENSP00000382190.3		A0A0A0MS98

Frequencies

GnomAD3 genomes

AF:

0.0174

AC:

2647

AN:

152090

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0602

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00766

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.0134

GnomAD2 exomes

AF:

0.00462

AC:

1160

AN:

251206

AF XY:

0.00344

show subpopulations

Gnomad AFR exome

AF:

0.0633

Gnomad AMR exome

AF:

0.00315

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000616

Gnomad OTH exome

AF:

0.00196

GnomAD4 exome

AF:

0.00171

AC:

2505

AN:

1461480

Hom.:

Cov.:

AF XY:

0.00143

AC XY:

1039

AN XY:

727044

show subpopulations

African (AFR)

AF:

0.0614

AC:

2054

AN:

33468

American (AMR)

AF:

0.00353

AC:

158

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39682

South Asian (SAS)

AF:

0.000151

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53254

Middle Eastern (MID)

AF:

0.00277

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000333

AC:

AN:

1111814

Other (OTH)

AF:

0.00376

AC:

227

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

127

254

381

508

635

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

128

192

256

320

<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:

0.0175

AC:

2661

AN:

152208

Hom.:

Cov.:

AF XY:

0.0170

AC XY:

1267

AN XY:

74424

show subpopulations

African (AFR)

AF:

0.0603

AC:

2505

AN:

41526

American (AMR)

AF:

0.00765

AC:

117

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.000207

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

67996

Other (OTH)

AF:

0.0132

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

120

240

359

479

599

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

120

150

<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:

0.00628

Hom.:

Bravo

AF:

0.0204

Asia WGS

AF:

0.00375

AC:

AN:

3478

EpiCase

AF:

0.000382

EpiControl

AF:

0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Jan 13, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jun 04, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Sep 11, 2020

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Autosomal dominant distal renal tubular acidosis

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. -

Hereditary spherocytosis type 4

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Hemolytic anemia

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.63

CADD

Benign

0.65

(source)

DANN

Benign

0.66

PhyloP100

-2.3

Mutation Taster

=98/2

polymorphism (auto)

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over