rs145460820

Variant summary

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

The NM_001849.4(COL6A2):​c.2982C>T​(p.Ala994=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000334 in 1,606,538 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00047 ( 0 hom., cov: 34)
Exomes 𝑓: 0.00032 ( 1 hom. )

Consequence

COL6A2
NM_001849.4 synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -4.06
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=-0.61).
BP6
Variant 21-46132474-C-T is Benign according to our data. Variant chr21-46132474-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 289156.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr21-46132474-C-T is described in Lovd as [Benign].
BP7
Synonymous conserved (PhyloP=-4.06 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
COL6A2NM_001849.4 linkuse as main transcriptc.2982C>T p.Ala994= synonymous_variant 28/28 ENST00000300527.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
COL6A2ENST00000300527.9 linkuse as main transcriptc.2982C>T p.Ala994= synonymous_variant 28/281 NM_001849.4 P1P12110-1

Frequencies

GnomAD3 genomes
AF:
0.000473
AC:
72
AN:
152244
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00110
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000827
Gnomad FIN
AF:
0.00103
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000823
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000483
AC:
116
AN:
240238
Hom.:
1
AF XY:
0.000488
AC XY:
64
AN XY:
131176
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.000349
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000549
Gnomad SAS exome
AF:
0.000855
Gnomad FIN exome
AF:
0.000489
Gnomad NFE exome
AF:
0.000606
Gnomad OTH exome
AF:
0.000503
GnomAD4 exome
AF:
0.000320
AC:
465
AN:
1454176
Hom.:
1
Cov.:
34
AF XY:
0.000337
AC XY:
244
AN XY:
723098
show subpopulations
Gnomad4 AFR exome
AF:
0.0000599
Gnomad4 AMR exome
AF:
0.000314
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000253
Gnomad4 SAS exome
AF:
0.000906
Gnomad4 FIN exome
AF:
0.000307
Gnomad4 NFE exome
AF:
0.000304
Gnomad4 OTH exome
AF:
0.000299
GnomAD4 genome
AF:
0.000473
AC:
72
AN:
152362
Hom.:
0
Cov.:
34
AF XY:
0.000483
AC XY:
36
AN XY:
74502
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000827
Gnomad4 FIN
AF:
0.00103
Gnomad4 NFE
AF:
0.000823
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000492
Hom.:
0
Bravo
AF:
0.000283
EpiCase
AF:
0.000327
EpiControl
AF:
0.000593

ClinVar

Significance: Likely benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
Likely benign, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenFeb 01, 2023COL6A2: BP4, BP7 -
Likely benign, criteria provided, single submitterclinical testingGeneDxJul 24, 2019- -
not specified Benign:1
Likely benign, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Jul 18, 2016- -
Bethlem myopathy 1A Benign:1
Likely benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 12, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.61
CADD
Benign
1.3
DANN
Benign
0.92

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs145460820; hg19: chr21-47552388; COSMIC: COSV52423417; COSMIC: COSV52423417; API