rs2235579

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_001287.6(CLCN7):​c.1170A>T​(p.Ala390Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.513 in 1,612,790 control chromosomes in the GnomAD database, including 214,127 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.52 ( 20872 hom., cov: 35)
Exomes 𝑓: 0.51 ( 193255 hom. )

Consequence

CLCN7
NM_001287.6 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: -2.59
Variant links:
Genes affected
CLCN7 (HGNC:2025): (chloride voltage-gated channel 7) The product of this gene belongs to the CLC chloride channel family of proteins. Chloride channels play important roles in the plasma membrane and in intracellular organelles. This gene encodes chloride channel 7. Defects in this gene are the cause of osteopetrosis autosomal recessive type 4 (OPTB4), also called infantile malignant osteopetrosis type 2 as well as the cause of autosomal dominant osteopetrosis type 2 (OPTA2), also called autosomal dominant Albers-Schonberg disease or marble disease autosoml dominant. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. OPTA2 is the most common form of osteopetrosis, occurring in adolescence or adulthood. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.82).
BP6
Variant 16-1453878-T-A is Benign according to our data. Variant chr16-1453878-T-A is described in ClinVar as [Benign]. Clinvar id is 257949.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-1453878-T-A is described in Lovd as [Benign].
BP7
Synonymous conserved (PhyloP=-2.59 with no splicing effect.
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.67 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CLCN7NM_001287.6 linkc.1170A>T p.Ala390Ala synonymous_variant Exon 14 of 25 ENST00000382745.9 NP_001278.1 P51798-1
CLCN7NM_001114331.3 linkc.1098A>T p.Ala366Ala synonymous_variant Exon 13 of 24 NP_001107803.1 P51798-2
CLCN7XM_011522354.2 linkc.996A>T p.Ala332Ala synonymous_variant Exon 14 of 25 XP_011520656.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CLCN7ENST00000382745.9 linkc.1170A>T p.Ala390Ala synonymous_variant Exon 14 of 25 1 NM_001287.6 ENSP00000372193.4 P51798-1

Frequencies

GnomAD3 genomes
AF:
0.520
AC:
79105
AN:
152094
Hom.:
20843
Cov.:
35
show subpopulations
Gnomad AFR
AF:
0.518
Gnomad AMI
AF:
0.700
Gnomad AMR
AF:
0.534
Gnomad ASJ
AF:
0.520
Gnomad EAS
AF:
0.689
Gnomad SAS
AF:
0.560
Gnomad FIN
AF:
0.548
Gnomad MID
AF:
0.541
Gnomad NFE
AF:
0.495
Gnomad OTH
AF:
0.519
GnomAD3 exomes
AF:
0.534
AC:
133950
AN:
250664
Hom.:
36074
AF XY:
0.531
AC XY:
72160
AN XY:
135772
show subpopulations
Gnomad AFR exome
AF:
0.522
Gnomad AMR exome
AF:
0.572
Gnomad ASJ exome
AF:
0.498
Gnomad EAS exome
AF:
0.665
Gnomad SAS exome
AF:
0.542
Gnomad FIN exome
AF:
0.547
Gnomad NFE exome
AF:
0.502
Gnomad OTH exome
AF:
0.530
GnomAD4 exome
AF:
0.512
AC:
748269
AN:
1460578
Hom.:
193255
Cov.:
50
AF XY:
0.513
AC XY:
372661
AN XY:
726598
show subpopulations
Gnomad4 AFR exome
AF:
0.520
Gnomad4 AMR exome
AF:
0.563
Gnomad4 ASJ exome
AF:
0.502
Gnomad4 EAS exome
AF:
0.702
Gnomad4 SAS exome
AF:
0.541
Gnomad4 FIN exome
AF:
0.551
Gnomad4 NFE exome
AF:
0.498
Gnomad4 OTH exome
AF:
0.527
GnomAD4 genome
AF:
0.520
AC:
79180
AN:
152212
Hom.:
20872
Cov.:
35
AF XY:
0.523
AC XY:
38930
AN XY:
74422
show subpopulations
Gnomad4 AFR
AF:
0.519
Gnomad4 AMR
AF:
0.535
Gnomad4 ASJ
AF:
0.520
Gnomad4 EAS
AF:
0.689
Gnomad4 SAS
AF:
0.562
Gnomad4 FIN
AF:
0.548
Gnomad4 NFE
AF:
0.495
Gnomad4 OTH
AF:
0.517
Alfa
AF:
0.467
Hom.:
4978
Bravo
AF:
0.524
Asia WGS
AF:
0.621
AC:
2155
AN:
3478
EpiCase
AF:
0.507
EpiControl
AF:
0.506

ClinVar

Significance: Benign
Submissions summary: Benign:10
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:3
-
Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

-
PreventionGenetics, part of Exact Sciences
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

-
Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

not provided Benign:3
Feb 03, 2025
Labcorp Genetics (formerly Invitae), Labcorp
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

- -

Nov 10, 2018
GeneDx
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Hypopigmentation, organomegaly, and delayed myelination and development Benign:1
Jul 14, 2021
Genome-Nilou Lab
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Autosomal recessive osteopetrosis 4 Benign:1
Jul 14, 2021
Genome-Nilou Lab
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Autosomal dominant osteopetrosis 2 Benign:1
Jul 14, 2021
Genome-Nilou Lab
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Osteopetrosis Benign:1
Jan 13, 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. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.82
CADD
Benign
0.36
DANN
Benign
0.82
RBP_binding_hub_radar
0.92
RBP_regulation_power_radar
2.7

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs2235579; hg19: chr16-1503879; COSMIC: COSV51969010; COSMIC: COSV51969010; API