chr7-143316198-T-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000083.3(CLCN1):​c.-15T>G variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0029 in 1,455,576 control chromosomes in the GnomAD database, including 150 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0045 ( 11 hom., cov: 32)
Exomes 𝑓: 0.0029 ( 150 hom. )
Failed GnomAD Quality Control

Consequence

CLCN1
NM_000083.3 5_prime_UTR

Scores

2

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.0770
Variant links:
Genes affected
CLCN1 (HGNC:2019): (chloride voltage-gated channel 1) The CLCN family of voltage-dependent chloride channel genes comprises nine members (CLCN1-7, Ka and Kb) which demonstrate quite diverse functional characteristics while sharing significant sequence homology. The protein encoded by this gene regulates the electric excitability of the skeletal muscle membrane. Mutations in this gene cause two forms of inherited human muscle disorders: recessive generalized myotonia congenita (Becker) and dominant myotonia (Thomsen). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2012]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.81).
BP6
Variant 7-143316198-T-G is Benign according to our data. Variant chr7-143316198-T-G is described in ClinVar as [Benign]. Clinvar id is 383611.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BA1
GnomAdExome4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.0703 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
CLCN1NM_000083.3 linkuse as main transcriptc.-15T>G 5_prime_UTR_variant 1/23 ENST00000343257.7
CLCN1NR_046453.2 linkuse as main transcriptn.88T>G non_coding_transcript_exon_variant 1/22

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
CLCN1ENST00000343257.7 linkuse as main transcriptc.-15T>G 5_prime_UTR_variant 1/231 NM_000083.3 P4
CLCN1ENST00000650516.2 linkuse as main transcriptc.-15T>G 5_prime_UTR_variant 1/23 A2

Frequencies

GnomAD3 genomes
AF:
0.00
AC:
681
AN:
150862
Hom.:
11
Cov.:
32
FAILED QC
Gnomad AFR
AF:
0.00125
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0363
Gnomad ASJ
AF:
0.000576
Gnomad EAS
AF:
0.00839
Gnomad SAS
AF:
0.000835
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000192
Gnomad OTH
AF:
0.00966
GnomAD3 exomes
AF:
0.0117
AC:
2875
AN:
246726
Hom.:
118
AF XY:
0.00917
AC XY:
1227
AN XY:
133864
show subpopulations
Gnomad AFR exome
AF:
0.000881
Gnomad AMR exome
AF:
0.0761
Gnomad ASJ exome
AF:
0.000700
Gnomad EAS exome
AF:
0.00699
Gnomad SAS exome
AF:
0.000818
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000134
Gnomad OTH exome
AF:
0.0111
GnomAD4 exome
AF:
0.00290
AC:
4216
AN:
1455576
Hom.:
150
Cov.:
32
AF XY:
0.00260
AC XY:
1886
AN XY:
724338
show subpopulations
Gnomad4 AFR exome
AF:
0.000569
Gnomad4 AMR exome
AF:
0.0724
Gnomad4 ASJ exome
AF:
0.000574
Gnomad4 EAS exome
AF:
0.0151
Gnomad4 SAS exome
AF:
0.000882
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000108
Gnomad4 OTH exome
AF:
0.00246
GnomAD4 genome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.00450
AC:
680
AN:
150970
Hom.:
11
Cov.:
32
AF XY:
0.00480
AC XY:
354
AN XY:
73698
show subpopulations
Gnomad4 AFR
AF:
0.00125
Gnomad4 AMR
AF:
0.0362
Gnomad4 ASJ
AF:
0.000576
Gnomad4 EAS
AF:
0.00841
Gnomad4 SAS
AF:
0.000836
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000192
Gnomad4 OTH
AF:
0.00956
Alfa
AF:
0.00406
Hom.:
2

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Benign:1
Benign, criteria provided, single submitterclinical testingGeneDxOct 31, 2016This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.81
CADD
Benign
1.5
DANN
Benign
0.74

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: rs182668076; hg19: chr7-143013291; API