rs755931467

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP2PP3

The NM_001829.4(CLCN3):​c.491C>T​(p.Ala164Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000186 in 1,613,486 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 (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

CLCN3
NM_001829.4 missense

Scores

3
12
3

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.05

Publications

2 publications found
Variant links:
Genes affected
CLCN3 (HGNC:2021): (chloride voltage-gated channel 3) This gene encodes a member of the voltage-gated chloride channel (ClC) family. The encoded protein is present in all cell types and localized in plasma membranes and in intracellular vesicles. It is a multi-pass membrane protein which contains a ClC domain and two additional C-terminal CBS (cystathionine beta-synthase) domains. The ClC domain catalyzes the selective flow of Cl- ions across cell membranes, and the CBS domain may have a regulatory function. This protein plays a role in both acidification and transmitter loading of GABAergic synaptic vesicles, and in smooth muscle cell activation and neointima formation. This protein is required for lysophosphatidic acid (LPA)-activated Cl- current activity and fibroblast-to-myofibroblast differentiation. The protein activity is regulated by Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) in glioma cells. Multiple alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Aug 2011]
CLCN3 Gene-Disease associations (from GenCC):
  • complex neurodevelopmental disorder
    Inheritance: AD Classification: STRONG Submitted by: Illumina
  • neurodevelopmental disorder with hypotonia and brain abnormalities
    Inheritance: AD Classification: STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Broad Center for Mendelian Genomics, Ambry Genetics
  • neurodevelopmental disorder with seizures and brain abnormalities
    Inheritance: AR Classification: LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in the CLCN3 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 11 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Gene score misZ: 4.3745 (above the threshold of 3.09). Trascript score misZ: 5.1954 (above the threshold of 3.09). GenCC associations: The gene is linked to neurodevelopmental disorder with seizures and brain abnormalities, neurodevelopmental disorder with hypotonia and brain abnormalities, complex neurodevelopmental disorder.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.773

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001829.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CLCN3
NM_001829.4
MANE Select
c.491C>Tp.Ala164Val
missense
Exon 5 of 13NP_001820.2P51790-1
CLCN3
NM_173872.4
c.491C>Tp.Ala164Val
missense
Exon 5 of 14NP_776297.2P51790-2
CLCN3
NM_001243372.2
c.491C>Tp.Ala164Val
missense
Exon 5 of 12NP_001230301.1P51790-4

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
CLCN3
ENST00000513761.6
TSL:1 MANE Select
c.491C>Tp.Ala164Val
missense
Exon 5 of 13ENSP00000424603.1P51790-1
CLCN3
ENST00000347613.9
TSL:1
c.491C>Tp.Ala164Val
missense
Exon 5 of 14ENSP00000261514.5P51790-2
CLCN3
ENST00000898875.1
c.557C>Tp.Ala186Val
missense
Exon 6 of 14ENSP00000568934.1

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152170
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
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:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000399
AC:
1
AN:
250884
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.0000617
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:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1461316
Hom.:
0
Cov.:
31
AF XY:
0.00000275
AC XY:
2
AN XY:
726988
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33448
American (AMR)
AF:
0.00
AC:
0
AN:
44606
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26124
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39650
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86192
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53412
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
0.00000180
AC:
2
AN:
1111746
Other (OTH)
AF:
0.00
AC:
0
AN:
60370
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.00000657
AC:
1
AN:
152170
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74340
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41428
American (AMR)
AF:
0.00
AC:
0
AN:
15282
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5196
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4830
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68032
Other (OTH)
AF:
0.00
AC:
0
AN:
2088
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.575
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.00
Hom.:
0
Bravo
AF:
0.00000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Neurodevelopmental disorder with hypotonia and brain abnormalities (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.29
BayesDel_addAF
Uncertain
0.048
T
BayesDel_noAF
Uncertain
0.010
CADD
Uncertain
25
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.75
D
Eigen
Uncertain
0.26
Eigen_PC
Benign
0.20
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Uncertain
0.93
D
M_CAP
Uncertain
0.15
D
MetaRNN
Pathogenic
0.77
D
MetaSVM
Uncertain
0.70
D
MutationAssessor
Uncertain
2.4
M
PhyloP100
4.0
PrimateAI
Pathogenic
0.88
D
PROVEAN
Uncertain
-3.5
D
REVEL
Uncertain
0.57
Sift
Uncertain
0.013
D
Sift4G
Benign
0.17
T
Polyphen
0.97
D
Vest4
0.56
MutPred
0.54
Gain of helix (P = 0.0078)
MVP
0.76
MPC
2.1
ClinPred
0.94
D
GERP RS
4.4
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.25
gMVP
0.98
Mutation Taster
=52/48
polymorphism

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

Other links and lift over

dbSNP: rs755931467; hg19: chr4-170610266; API