NM_004070.4:c.80A>T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_004070.4(CLCNKA):c.80A>T(p.His27Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000382 in 1,542,778 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000037 ( 0 hom. )

Consequence

CLCNKA
NM_004070.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0540

Publications

0 publications found

Variant links:

Genes affected

CLCNKA (HGNC:2026): (chloride voltage-gated channel Ka) This gene is a member of the CLC family of voltage-gated chloride channels. The encoded protein is predicted to have 12 transmembrane domains, and requires a beta subunit called barttin to form a functional channel. It is thought to function in salt reabsorption in the kidney and potassium recycling in the inner ear. The gene is highly similar to CLCNKB, which is located 10 kb downstream from this gene. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

CLCNKA Gene-Disease associations (from GenCC):

Bartter disease type 4B
Inheritance: Unknown, AR Classification: MODERATE, LIMITED Submitted by: Ambry Genetics, G2P
Bartter syndrome type 4
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

CLCNKA links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.08092436).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CLCNKA	NM_004070.4 link	c.80A>T	p.His27Leu	missense_variant	Exon 2 of 20	ENST00000331433.5	NP_004061.3	P51800-1
CLCNKA	NM_001042704.2 link	c.80A>T	p.His27Leu	missense_variant	Exon 2 of 20		NP_001036169.1	P51800-3
CLCNKA	NM_001257139.2 link	c.80A>T	p.His27Leu	missense_variant	Exon 2 of 19		NP_001244068.1	P51800-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CLCNKA	ENST00000331433.5 link	c.80A>T	p.His27Leu	missense_variant	Exon 2 of 20	1	NM_004070.4	ENSP00000332771.4		P51800-1

Frequencies

GnomAD3 genomes

AF:

0.0000461

AC:

AN:

151960

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

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:

0.00633

Gnomad NFE

AF:

0.0000589

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000194

AC:

AN:

154400

AF XY:

0.0000123

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:

0.0000481

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000374

AC:

AN:

1390700

Hom.:

Cov.:

AF XY:

0.0000335

AC XY:

AN XY:

685846

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32024

American (AMR)

AF:

0.00

AC:

AN:

35236

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

23824

East Asian (EAS)

AF:

0.0000273

AC:

AN:

36596

South Asian (SAS)

AF:

0.0000131

AC:

AN:

76046

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48788

Middle Eastern (MID)

AF:

0.000181

AC:

AN:

5510

European-Non Finnish (NFE)

AF:

0.0000428

AC:

AN:

1075062

Other (OTH)

AF:

0.0000521

AC:

AN:

57614

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152078

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74362

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41498

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5140

South Asian (SAS)

AF:

0.00

AC:

AN:

4804

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000589

AC:

AN:

67944

Other (OTH)

AF:

0.00

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.511

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000453

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Oct 06, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.80A>T (p.H27L) alteration is located in exon 2 (coding exon 1) of the CLCNKA gene. This alteration results from a A to T substitution at nucleotide position 80, causing the histidine (H) at amino acid position 27 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.087

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.37

CADD

Benign

5.1

(source)

DANN

Benign

0.80

DEOGEN2

Benign

0.081

.;.;T

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.021

LIST_S2

Benign

0.010

T;T;T

M_CAP

Benign

0.041

MetaRNN

Benign

0.081

T;T;T

MetaSVM

Benign

-0.81

MutationAssessor

Benign

0.69

N;N;N

PhyloP100

0.054

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.79

N;N;N

REVEL

Benign

0.22

Sift

Uncertain

0.025

D;D;D

Sift4G

Uncertain

0.018

D;D;D

Polyphen

0.0

.;.;B

Vest4

0.20

MVP

0.42

MPC

0.43

ClinPred

0.027

GERP RS

1.1

Varity_R

0.095

gMVP

0.18

Mutation Taster

=99/1

polymorphism

(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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NM_004070.4:c.80A>T

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