rs111938213

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6_Very_StrongBP7

The NM_001849.4(COL6A2):​c.2181G>A​(p.Ala727Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000812 in 1,613,062 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

COL6A2
NM_001849.4 synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -7.96
Variant links:
Genes affected
COL6A2 (HGNC:2212): (collagen type VI alpha 2 chain) This gene encodes one of the three alpha chains of type VI collagen, a beaded filament collagen found in most connective tissues. The product of this gene contains several domains similar to von Willebrand Factor type A domains. 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 this gene are associated with Bethlem myopathy and Ullrich scleroatonic muscular dystrophy. Three transcript variants have been identified for this gene. [provided by RefSeq, Jul 2008]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.6).
BP6
Variant 21-46125996-G-A is Benign according to our data. Variant chr21-46125996-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 572429.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-7.96 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
COL6A2NM_001849.4 linkc.2181G>A p.Ala727Ala synonymous_variant 26/28 ENST00000300527.9 NP_001840.3 P12110-1A0A384MDP3
COL6A2NM_058174.3 linkc.2181G>A p.Ala727Ala synonymous_variant 26/28 NP_478054.2 P12110-2
COL6A2NM_058175.3 linkc.2181G>A p.Ala727Ala synonymous_variant 26/28 NP_478055.2 P12110-3

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
COL6A2ENST00000300527.9 linkc.2181G>A p.Ala727Ala synonymous_variant 26/281 NM_001849.4 ENSP00000300527.4 P12110-1
COL6A2ENST00000397763.6 linkc.2181G>A p.Ala727Ala synonymous_variant 26/285 ENSP00000380870.1 P12110-2
COL6A2ENST00000409416.6 linkc.2181G>A p.Ala727Ala synonymous_variant 25/275 ENSP00000387115.1 P12110-3

Frequencies

GnomAD3 genomes
AF:
0.000394
AC:
60
AN:
152168
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00133
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.000956
GnomAD3 exomes
AF:
0.0000677
AC:
17
AN:
251056
Hom.:
0
AF XY:
0.0000442
AC XY:
6
AN XY:
135808
show subpopulations
Gnomad AFR exome
AF:
0.000986
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000882
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000486
AC:
71
AN:
1460776
Hom.:
0
Cov.:
79
AF XY:
0.0000372
AC XY:
27
AN XY:
726666
show subpopulations
Gnomad4 AFR exome
AF:
0.00134
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000504
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000117
Gnomad4 OTH exome
AF:
0.000133
GnomAD4 genome
AF:
0.000394
AC:
60
AN:
152286
Hom.:
0
Cov.:
33
AF XY:
0.000483
AC XY:
36
AN XY:
74458
show subpopulations
Gnomad4 AFR
AF:
0.00132
Gnomad4 AMR
AF:
0.0000653
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.000946
Alfa
AF:
0.000328
Hom.:
0
Bravo
AF:
0.000457
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

Significance: Likely benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Bethlem myopathy 1A Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 06, 2024- -
not provided Benign:1
Likely benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.60
CADD
Benign
1.9
DANN
Benign
0.86

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.080
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.

Other links and lift over

dbSNP: rs111938213; hg19: chr21-47545910; COSMIC: COSV56001595; COSMIC: COSV56001595; API