rs200261890

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001848.3(COL6A1):c.2348G>A(p.Arg783Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000284 in 1,614,092 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R783W) has been classified as Benign.

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 35)

Exomes 𝑓: 0.00030 ( 4 hom. )

Consequence

COL6A1
NM_001848.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: 2.50

Publications

6 publications found

Variant links:

Genes affected

COL6A1 (HGNC:2211): (collagen type VI alpha 1 chain) The collagens are a superfamily of proteins that play a role in maintaining the integrity of various tissues. Collagens are extracellular matrix proteins and have a triple-helical domain as their common structural element. Collagen VI is a major structural component of microfibrils. The basic structural unit of collagen VI is a heterotrimer of the alpha1(VI), alpha2(VI), and alpha3(VI) chains. The alpha2(VI) and alpha3(VI) chains are encoded by the COL6A2 and COL6A3 genes, respectively. The protein encoded by this gene is the alpha 1 subunit of type VI collagen (alpha1(VI) chain). Mutations in the genes that code for the collagen VI subunits result in the autosomal dominant disorder, Bethlem myopathy. [provided by RefSeq, Jul 2008]

COL6A1 Gene-Disease associations (from GenCC):

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

COL6A1 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=0.011096865).

BP6

Variant 21-46002624-G-A is Benign according to our data. Variant chr21-46002624-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 93852.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000164 (25/152380) while in subpopulation SAS AF = 0.00331 (16/4834). AF 95% confidence interval is 0.00208. There are 0 homozygotes in GnomAd4. There are 17 alleles in the male GnomAd4 subpopulation. Median coverage is 35. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 4 AR,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001848.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COL6A1	NM_001848.3	MANE Select	c.2348G>A	p.Arg783Gln	missense	Exon 33 of 35	NP_001839.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
COL6A1	ENST00000361866.8	TSL:1 MANE Select	c.2348G>A	p.Arg783Gln	missense	Exon 33 of 35	ENSP00000355180.3
COL6A1	ENST00000498614.5	TSL:1	n.582G>A		non_coding_transcript_exon	Exon 4 of 6
COL6A1	ENST00000612273.2	TSL:5	c.473G>A	p.Arg158Gln	missense	Exon 4 of 7	ENSP00000483630.2

Frequencies

GnomAD3 genomes

AF:

0.000171

AC:

AN:

152262

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00144

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00351

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000589

AC:

148

AN:

251252

AF XY:

0.000641

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00238

Gnomad EAS exome

AF:

0.00109

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000616

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.000297

AC:

434

AN:

1461712

Hom.:

Cov.:

AF XY:

0.000355

AC XY:

258

AN XY:

727170

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00287

AC:

AN:

26136

East Asian (EAS)

AF:

0.00113

AC:

AN:

39696

South Asian (SAS)

AF:

0.00264

AC:

228

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53292

Middle Eastern (MID)

AF:

0.000693

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000405

AC:

AN:

1111974

Other (OTH)

AF:

0.000613

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

107

143

179

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<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:

0.000164

AC:

AN:

152380

Hom.:

Cov.:

AF XY:

0.000228

AC XY:

AN XY:

74510

show subpopulations

African (AFR)

AF:

0.0000240

AC:

AN:

41590

American (AMR)

AF:

0.00

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00144

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5182

South Asian (SAS)

AF:

0.00331

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.519

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000255

Hom.:

Bravo

AF:

0.000128

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000659

AC:

Asia WGS

AF:

0.00202

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (2)

Bethlem myopathy 1A (1)

Collagen 6-related myopathy (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.073

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.14

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.28

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.18

FATHMM_MKL

Benign

0.69

LIST_S2

Benign

0.75

M_CAP

Uncertain

0.25

MetaRNN

Benign

0.011

MetaSVM

Benign

-0.33

MutationAssessor

Benign

2.0

PhyloP100

2.5

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-2.3

REVEL

Uncertain

0.32

Sift

Uncertain

0.012

Sift4G

Uncertain

0.0070

Polyphen

0.90

Vest4

0.35

MVP

0.68

MPC

0.71

ClinPred

0.043

GERP RS

4.0

Varity_R

0.085

gMVP

0.31

Mutation Taster

=96/4

polymorphism

(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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over