rs11896521

Positions:

chr2-237374829-T-G

Variant summary

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

The NM_004369.4(COL6A3):c.3262A>C(p.Lys1088Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0167 in 1,613,924 control chromosomes in the GnomAD database, including 1,501 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.055 ( 569 hom., cov: 32)

Exomes 𝑓: 0.013 ( 932 hom. )

Consequence

COL6A3
NM_004369.4 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:13

Conservation

PhyloP100: 3.12

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0013917685).

BP6

Variant 2-237374829-T-G is Benign according to our data. Variant chr2-237374829-T-G is described in ClinVar as [Benign]. Clinvar id is 94924.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-237374829-T-G is described in Lovd as [Benign]. Variant chr2-237374829-T-G is described in Lovd as [Likely_benign].

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.149 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL6A3	NM_004369.4 linkuse as main transcript	c.3262A>C	p.Lys1088Gln	missense_variant	8/44	ENST00000295550.9	NP_004360.2	P12111-1D9ZGF2Q8N4Z1Q63HQ4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COL6A3	ENST00000295550.9 linkuse as main transcript	c.3262A>C	p.Lys1088Gln	missense_variant	8/44	1	NM_004369.4	ENSP00000295550.4		P12111-1

Frequencies

GnomAD3 genomes

AF:

0.0550

AC:

8364

AN:

151942

Hom.:

567

Cov.:

show subpopulations

Gnomad AFR

AF:

0.152

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0740

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.0456

Gnomad SAS

AF:

0.0342

Gnomad FIN

AF:

0.0340

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.00128

Gnomad OTH

AF:

0.0408

GnomAD3 exomes

AF:

0.0374

AC:

9392

AN:

251150

Hom.:

525

AF XY:

0.0318

AC XY:

4319

AN XY:

135822

show subpopulations

Gnomad AFR exome

AF:

0.149

Gnomad AMR exome

AF:

0.120

Gnomad ASJ exome

AF:

0.000794

Gnomad EAS exome

AF:

0.0433

Gnomad SAS exome

AF:

0.0344

Gnomad FIN exome

AF:

0.0288

Gnomad NFE exome

AF:

0.00179

Gnomad OTH exome

AF:

0.0238

GnomAD4 exome

AF:

0.0127

AC:

18533

AN:

1461864

Hom.:

932

Cov.:

AF XY:

0.0124

AC XY:

9018

AN XY:

727234

show subpopulations

Gnomad4 AFR exome

AF:

0.149

Gnomad4 AMR exome

AF:

0.114

Gnomad4 ASJ exome

AF:

0.00122

Gnomad4 EAS exome

AF:

0.0487

Gnomad4 SAS exome

AF:

0.0321

Gnomad4 FIN exome

AF:

0.0266

Gnomad4 NFE exome

AF:

0.000933

Gnomad4 OTH exome

AF:

0.0196

GnomAD4 genome

AF:

0.0551

AC:

8381

AN:

152060

Hom.:

569

Cov.:

AF XY:

0.0568

AC XY:

4224

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.152

Gnomad4 AMR

AF:

0.0742

Gnomad4 ASJ

AF:

0.000576

Gnomad4 EAS

AF:

0.0451

Gnomad4 SAS

AF:

0.0341

Gnomad4 FIN

AF:

0.0340

Gnomad4 NFE

AF:

0.00128

Gnomad4 OTH

AF:

0.0404

Alfa

AF:

0.00933

Hom.:

132

Bravo

AF:

0.0621

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.138

AC:

610

ESP6500EA

AF:

0.00151

AC:

ExAC

AF:

0.0360

AC:

4377

Asia WGS

AF:

0.0620

AC:

216

AN:

3478

EpiCase

AF:

0.00115

EpiControl

AF:

0.000652

ClinVar

Significance: Benign

Submissions summary: Benign:13

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:7

Benign, criteria provided, single submitter	clinical testing	GeneDx	Feb 18, 2016	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. -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, no assertion criteria provided	clinical testing	Clinical Genetics, Academic Medical Center	-	- -
Benign, no assertion criteria provided	clinical testing	Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+	-	- -
Benign, criteria provided, single submitter	clinical testing	Unidad de Genómica Garrahan, Hospital de Pediatría Garrahan	Jul 31, 2024	This variant is classified as Benign based on local population frequency. This variant was detected in 20% of patients studied in a panel designed for Epileptic and Developmental Encephalopathy, Progressive Myoclonus Epilepsy and Abnormal Movements and Neurodegeneration with brain iron accumulation. Number of patients: 19. Only high quality variants are reported. -
Benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Sep 16, 2014	- -
Benign, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Aug 15, 2013	- -

not provided

Benign:3

Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Nov 14, 2017	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -

Bethlem myopathy 1A

Benign:2

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 31, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -

Collagen 6-related myopathy

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

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

0.077

BayesDel_addAF

Benign

-0.52

BayesDel_noAF

Benign

-0.38

CADD

Benign

DANN

Benign

0.88

DEOGEN2

Benign

0.23

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

Eigen

Benign

-0.38

Eigen_PC

Benign

-0.26

FATHMM_MKL

Benign

0.75

LIST_S2

Benign

0.45

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

MetaRNN

Benign

0.0014

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

MetaSVM

Benign

-0.84

MutationAssessor

Benign

1.2

.;L;.;.;.;.;.

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.25

N;N;N;.;N;N;N

REVEL

Uncertain

0.30

Sift

Benign

1.0

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

Sift4G

Benign

0.73

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

Polyphen

0.34

B;B;.;.;B;.;.

Vest4

0.050

MPC

0.26

ClinPred

0.038

GERP RS

4.4

Varity_R

0.12

gMVP

0.69

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over