Genetic Variant CLCN6:p.Gly6Trp (chr1-11806278-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001286.5(CLCN6):c.16G>T(p.Gly6Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G6R) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

CLCN6
NM_001286.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.82

Publications

1 publications found

Variant links:

Genes affected

CLCN6 (HGNC:2024): (chloride voltage-gated channel 6) This gene encodes a member of the voltage-dependent chloride channel protein family. Members of this family can function as either chloride channels or antiporters. This protein is primarily localized to late endosomes and functions as a chloride/proton antiporter. Alternate splicing results in both coding and non-coding variants. Additional alternately spliced variants have been described but their full-length structure is unknown. [provided by RefSeq, Mar 2012]

CLCN6 links:

MTHFR (HGNC:7436): (methylenetetrahydrofolate reductase) The protein encoded by this gene catalyzes the conversion of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate, a co-substrate for homocysteine remethylation to methionine. Genetic variation in this gene influences susceptibility to occlusive vascular disease, neural tube defects, colon cancer and acute leukemia, and mutations in this gene are associated with methylenetetrahydrofolate reductase deficiency.[provided by RefSeq, Oct 2009]

MTHFR Gene-Disease associations (from GenCC):

homocystinuria due to methylene tetrahydrofolate reductase deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, ClinGen, Orphanet, Labcorp Genetics (formerly Invitae)

MTHFR links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001286.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CLCN6	NM_001286.5	MANE Select	c.16G>T	p.Gly6Trp	missense	Exon 1 of 23	NP_001277.2	P51797-1
CLCN6	NM_001256959.2		c.16G>T	p.Gly6Trp	missense	Exon 1 of 22	NP_001243888.2	P51797-6
CLCN6	NR_046428.2		n.88G>T		non_coding_transcript_exon	Exon 1 of 23

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CLCN6	ENST00000346436.11	TSL:1 MANE Select	c.16G>T	p.Gly6Trp	missense	Exon 1 of 23	ENSP00000234488.9	P51797-1
CLCN6	ENST00000376490.7	TSL:1	n.16G>T		non_coding_transcript_exon	Exon 1 of 11
CLCN6	ENST00000376491.7	TSL:1	n.16G>T		non_coding_transcript_exon	Exon 1 of 11

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1341040

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

662468

African (AFR)

AF:

0.00

AC:

AN:

26232

American (AMR)

AF:

0.00

AC:

AN:

20146

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21972

East Asian (EAS)

AF:

0.00

AC:

AN:

31512

South Asian (SAS)

AF:

0.00

AC:

AN:

67656

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50974

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5426

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1062012

Other (OTH)

AF:

0.00

AC:

AN:

55110

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Uncertain

0.010

CADD

Pathogenic

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.30

Eigen

Uncertain

0.34

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.92

M_CAP

Pathogenic

0.64

MetaRNN

Uncertain

0.53

MetaSVM

Pathogenic

0.87

MutationAssessor

Benign

1.6

PhyloP100

2.8

PrimateAI

Uncertain

0.73

PROVEAN

Benign

-2.0

REVEL

Uncertain

0.60

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0

Polyphen

0.86

Vest4

0.41

MutPred

0.42

Gain of MoRF binding (P = 0.0108)

MVP

0.88

MPC

0.39

ClinPred

0.91

GERP RS

4.1

PromoterAI

-0.086

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.18

gMVP

0.52

Mutation Taster

=79/21

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over