rs34934127

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_004369.4(COL6A3):c.1786G>T(p.Ala596Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00378 in 1,614,130 control chromosomes in the GnomAD database, including 187 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.019 ( 92 hom., cov: 33)

Exomes 𝑓: 0.0022 ( 95 hom. )

Consequence

COL6A3
NM_004369.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:9

Conservation

PhyloP100: 4.59

Publications

15 publications found

Variant links:

Genes affected

COL6A3 (HGNC:2213): (collagen type VI alpha 3 chain) This gene encodes the alpha-3 chain, one of the three alpha chains of type VI collagen, a beaded filament collagen found in most connective tissues. The alpha-3 chain of type VI collagen is much larger than the alpha-1 and -2 chains. This difference in size is largely due to an increase in the number of subdomains, similar to von Willebrand Factor type A domains, that are found in the amino terminal globular domain of all the alpha chains. These domains have been shown to bind extracellular matrix proteins, an interaction that explains the importance of this collagen in organizing matrix components. Mutations in the type VI collagen genes are associated with Bethlem myopathy, a rare autosomal dominant proximal myopathy with early childhood onset. Mutations in this gene are also a cause of Ullrich congenital muscular dystrophy, also referred to as Ullrich scleroatonic muscular dystrophy, an autosomal recessive congenital myopathy that is more severe than Bethlem myopathy. Multiple transcript variants have been identified, but the full-length nature of only some of these variants has been described. [provided by RefSeq, Jun 2009]

COL6A3 Gene-Disease associations (from GenCC):

Bethlem myopathy 1A
Inheritance: AD, AR, SD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Ambry Genetics
collagen 6-related myopathy
Inheritance: AD, AR Classification: DEFINITIVE Submitted by: ClinGen
Ullrich congenital muscular dystrophy 1C
Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
dystonia 27
Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED, NO_KNOWN Submitted by: Illumina, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics, Orphanet
Ullrich congenital muscular dystrophy 1A
Inheritance: AR, AD, SD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp
Bethlem myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Ullrich congenital muscular dystrophy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

COL6A3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.004594147).

BP6

Variant 2-237381026-C-A is Benign according to our data. Variant chr2-237381026-C-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 94912.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0625 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL6A3	NM_004369.4 link	c.1786G>T	p.Ala596Ser	missense_variant	Exon 5 of 44	ENST00000295550.9	NP_004360.2	P12111-1D9ZGF2Q8N4Z1Q63HQ4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL6A3	ENST00000295550.9 link	c.1786G>T	p.Ala596Ser	missense_variant	Exon 5 of 44	1	NM_004369.4	ENSP00000295550.4		P12111-1

Frequencies

GnomAD3 genomes

AF:

0.0186

AC:

2825

AN:

152156

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0644

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00700

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000456

Gnomad OTH

AF:

0.00813

GnomAD2 exomes

AF:

0.00492

AC:

1236

AN:

251448

AF XY:

0.00326

show subpopulations

Gnomad AFR exome

AF:

0.0634

Gnomad AMR exome

AF:

0.00315

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000545

Gnomad OTH exome

AF:

0.00277

GnomAD4 exome

AF:

0.00223

AC:

3264

AN:

1461856

Hom.:

Cov.:

AF XY:

0.00198

AC XY:

1441

AN XY:

727228

show subpopulations

African (AFR)

AF:

0.0685

AC:

2292

AN:

33480

American (AMR)

AF:

0.00338

AC:

151

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.000626

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.0120

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

0.000341

AC:

379

AN:

1112006

Other (OTH)

AF:

0.00525

AC:

317

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

192

384

576

768

960

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

160

240

320

400

<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:

0.0187

AC:

2840

AN:

152274

Hom.:

Cov.:

AF XY:

0.0182

AC XY:

1354

AN XY:

74464

show subpopulations

African (AFR)

AF:

0.0646

AC:

2682

AN:

41534

American (AMR)

AF:

0.00699

AC:

107

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.000207

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000456

AC:

AN:

68018

Other (OTH)

AF:

0.00804

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

131

261

392

522

653

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

120

150

<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:

0.00680

Hom.:

Bravo

AF:

0.0204

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.0651

AC:

287

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.00625

AC:

759

Asia WGS

AF:

0.00549

AC:

AN:

3478

EpiCase

AF:

0.000763

EpiControl

AF:

0.000830

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:9

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:4

Nov 05, 2012

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 22, 2016

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This 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. -

Genetic Services Laboratory, University of Chicago

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

Likely benign based on allele frequency in 1000 Genomes Project or ESP global frequency and its presence in a patient with a rare or unrelated disease phenotype. NOT Sanger confirmed. -

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:3

Dec 15, 2017

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Sep 28, 2015

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Bethlem myopathy 1A

Benign:1

Jan 28, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Collagen 6-related myopathy

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

AlphaMissense

Benign

0.16

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.11

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.24

.;T;.;T;.;.;.;T

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.86

D;D;D;D;.;D;D;D

MetaRNN

Benign

0.0046

T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.35

MutationAssessor

Uncertain

2.1

.;M;.;.;.;.;.;.

PhyloP100

4.6

PrimateAI

Benign

0.44

PROVEAN

Benign

-0.62

N;N;N;N;N;N;N;N

REVEL

Uncertain

0.41

Sift

Benign

0.28

T;T;T;T;T;T;T;T

Sift4G

Benign

0.14

T;T;T;T;T;D;D;D

Polyphen

1.0

D;D;.;.;D;.;.;.

Vest4

0.66

MVP

0.88

MPC

0.62

ClinPred

0.036

GERP RS

5.8

Varity_R

0.19

gMVP

0.65

Mutation Taster

=91/9

polymorphism (auto)

(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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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