chr21-46001222-C-T

Variant names:

Variant summary

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

The ENST00000498614.5(COL6A1):n.26C>T variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.036 in 1,595,018 control chromosomes in the GnomAD database, including 1,286 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.026 ( 75 hom., cov: 34)

Exomes 𝑓: 0.037 ( 1211 hom. )

Consequence

COL6A1
ENST00000498614.5 non_coding_transcript_exon

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 1.36

Publications

3 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 (BayesDel_noAF=-0.77).

BP6

Variant 21-46001222-C-T is Benign according to our data. Variant chr21-46001222-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 93836.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0262 (3993/152282) while in subpopulation NFE AF = 0.0441 (2996/67974). AF 95% confidence interval is 0.0428. There are 75 homozygotes in GnomAd4. There are 1794 alleles in the male GnomAd4 subpopulation. Median coverage is 34. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 75 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL6A1	NM_001848.3 link	c.1823-31C>T		intron_variant	Intron 29 of 34	ENST00000361866.8	NP_001839.2	P12109A0A384P5H7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL6A1	ENST00000361866.8 link	c.1823-31C>T		intron_variant	Intron 29 of 34	1	NM_001848.3	ENSP00000355180.3		P12109

Frequencies

GnomAD3 genomes

AF:

0.0262

AC:

3994

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00663

Gnomad AMI

AF:

0.0614

Gnomad AMR

AF:

0.0133

Gnomad ASJ

AF:

0.0138

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00827

Gnomad FIN

AF:

0.0302

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0441

Gnomad OTH

AF:

0.0253

GnomAD2 exomes

AF:

0.0266

AC:

6263

AN:

235740

AF XY:

0.0269

show subpopulations

Gnomad AFR exome

AF:

0.00749

Gnomad AMR exome

AF:

0.0119

Gnomad ASJ exome

AF:

0.0188

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0342

Gnomad NFE exome

AF:

0.0428

Gnomad OTH exome

AF:

0.0259

GnomAD4 exome

AF:

0.0370

AC:

53417

AN:

1442736

Hom.:

1211

Cov.:

AF XY:

0.0363

AC XY:

26050

AN XY:

716954

show subpopulations

African (AFR)

AF:

0.00552

AC:

184

AN:

33342

American (AMR)

AF:

0.0129

AC:

576

AN:

44616

Ashkenazi Jewish (ASJ)

AF:

0.0165

AC:

429

AN:

26074

East Asian (EAS)

AF:

0.000101

AC:

AN:

39526

South Asian (SAS)

AF:

0.0109

AC:

938

AN:

86142

European-Finnish (FIN)

AF:

0.0369

AC:

1471

AN:

39844

Middle Eastern (MID)

AF:

0.00453

AC:

AN:

5740

European-Non Finnish (NFE)

AF:

0.0434

AC:

48049

AN:

1107510

Other (OTH)

AF:

0.0290

AC:

1740

AN:

59942

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.468

Heterozygous variant carriers

2416

4832

7249

9665

12081

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

1754

3508

5262

7016

8770

<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:

0.0262

AC:

3993

AN:

152282

Hom.:

Cov.:

AF XY:

0.0241

AC XY:

1794

AN XY:

74460

show subpopulations

African (AFR)

AF:

0.00661

AC:

275

AN:

41574

American (AMR)

AF:

0.0133

AC:

204

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.0138

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5176

South Asian (SAS)

AF:

0.00828

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.0302

AC:

321

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0441

AC:

2996

AN:

67974

Other (OTH)

AF:

0.0250

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.494

Heterozygous variant carriers

213

426

639

852

1065

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

138

184

230

<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:

0.0338

Hom.:

Bravo

AF:

0.0245

Asia WGS

AF:

0.00636

AC:

AN:

3476

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Sep 05, 2012

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Benign:1

Jun 26, 2018

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.77

CADD

Benign

5.4

(source)

DANN

Benign

0.81

PhyloP100

1.4

PromoterAI

-0.050

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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