rs141892165

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.1612-10G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00117 in 1,553,530 control chromosomes in the GnomAD database, including 18 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0065 ( 9 hom., cov: 34)

Exomes 𝑓: 0.00059 ( 9 hom. )

Consequence

COL6A1
NM_001848.3 intron

Scores

Splicing: ADA: 0.0001818

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -0.867

Publications

2 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):

Bethlem myopathy 1A
Inheritance: AR, AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, G2P
collagen 6-related myopathy
Inheritance: SD, AD, AR Classification: DEFINITIVE Submitted by: ClinGen
Ullrich congenital muscular dystrophy 1A
Inheritance: AD, AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
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=-0.92).

BP6

Variant 21-45998887-G-A is Benign according to our data. Variant chr21-45998887-G-A is described in ClinVar as Benign. ClinVar VariationId is 93823.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00653 (995/152336) while in subpopulation AFR AF = 0.0231 (961/41558). AF 95% confidence interval is 0.0219. There are 9 homozygotes in GnomAd4. There are 478 alleles in the male GnomAd4 subpopulation. Median coverage is 34. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 9 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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COL6A1	NM_001848.3	MANE Select	c.1612-10G>A		intron	N/A	NP_001839.2	P12109

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COL6A1	ENST00000361866.8	TSL:1 MANE Select	c.1612-10G>A		intron	N/A	ENSP00000355180.3	P12109
	COL6A1	ENST00000866134.1		c.565-3640G>A		intron	N/A	ENSP00000536193.1

Frequencies

GnomAD3 genomes

AF:

0.00652

AC:

992

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0231

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00164

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00287

GnomAD2 exomes

AF:

0.00159

AC:

254

AN:

159668

AF XY:

0.00117

show subpopulations

Gnomad AFR exome

AF:

0.0242

Gnomad AMR exome

AF:

0.00112

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000484

Gnomad OTH exome

AF:

0.000224

GnomAD4 exome

AF:

0.000592

AC:

829

AN:

1401194

Hom.:

Cov.:

AF XY:

0.000528

AC XY:

365

AN XY:

691258

show subpopulations

African (AFR)

AF:

0.0207

AC:

661

AN:

31986

American (AMR)

AF:

0.00128

AC:

AN:

35866

Ashkenazi Jewish (ASJ)

AF:

0.0000397

AC:

AN:

25186

East Asian (EAS)

AF:

0.000137

AC:

AN:

36536

South Asian (SAS)

AF:

0.0000881

AC:

AN:

79472

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48368

Middle Eastern (MID)

AF:

0.000702

AC:

AN:

5700

European-Non Finnish (NFE)

AF:

0.0000407

AC:

AN:

1079992

Other (OTH)

AF:

0.00105

AC:

AN:

58088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.449

Heterozygous variant carriers

124

166

207

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

110

<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:

0.00653

AC:

995

AN:

152336

Hom.:

Cov.:

AF XY:

0.00642

AC XY:

478

AN XY:

74490

show subpopulations

African (AFR)

AF:

0.0231

AC:

961

AN:

41558

American (AMR)

AF:

0.00163

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68040

Other (OTH)

AF:

0.00284

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

103

155

206

258

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.00397

Hom.:

Bravo

AF:

0.00706

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (2)

Bethlem myopathy 1A (1)

COL6A1-related disorder (1)

Collagen 6-related myopathy (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.92

CADD

Benign

2.0

(source)

DANN

Benign

0.54

PhyloP100

-0.87

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00018

dbscSNV1_RF

Benign

0.034

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

Computational scores

Splicing

Publications

Other links and lift over