rs374504636

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP4

The NM_001849.4(COL6A2):​c.544G>A​(p.Glu182Lys) variant causes a missense change. The variant allele was found at a frequency of 0.0000566 in 1,608,386 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000054 ( 0 hom. )

Consequence

COL6A2
NM_001849.4 missense

Scores

5
14

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 4.81
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.29818028).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
COL6A2NM_001849.4 linkc.544G>A p.Glu182Lys missense_variant Exon 3 of 28 ENST00000300527.9 NP_001840.3 P12110-1A0A384MDP3
COL6A2NM_058174.3 linkc.544G>A p.Glu182Lys missense_variant Exon 3 of 28 NP_478054.2 P12110-2
COL6A2NM_058175.3 linkc.544G>A p.Glu182Lys missense_variant Exon 3 of 28 NP_478055.2 P12110-3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
COL6A2ENST00000300527.9 linkc.544G>A p.Glu182Lys missense_variant Exon 3 of 28 1 NM_001849.4 ENSP00000300527.4 P12110-1

Frequencies

GnomAD3 genomes
AF:
0.0000789
AC:
12
AN:
152070
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000966
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000193
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000103
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000102
AC:
24
AN:
234810
Hom.:
0
AF XY:
0.000131
AC XY:
17
AN XY:
129640
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000878
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000114
Gnomad SAS exome
AF:
0.0000988
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000152
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000542
AC:
79
AN:
1456316
Hom.:
0
Cov.:
33
AF XY:
0.0000552
AC XY:
40
AN XY:
724604
show subpopulations
Gnomad4 AFR exome
AF:
0.0000299
Gnomad4 AMR exome
AF:
0.0000673
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000504
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000621
Gnomad4 OTH exome
AF:
0.0000332
GnomAD4 genome
AF:
0.0000789
AC:
12
AN:
152070
Hom.:
0
Cov.:
32
AF XY:
0.0000808
AC XY:
6
AN XY:
74292
show subpopulations
Gnomad4 AFR
AF:
0.0000966
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000193
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000103
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000160
Hom.:
0
Bravo
AF:
0.0000416
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000259
AC:
1
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000118
AC:
1
ExAC
AF:
0.000116
AC:
14
EpiCase
AF:
0.00
EpiControl
AF:
0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:3Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Uncertain:2
Sep 04, 2019
Revvity Omics, Revvity
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

May 08, 2024
GeneDx
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

In silico analysis indicates that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Inborn genetic diseases Uncertain:1
Oct 01, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.544G>A (p.E182K) alteration is located in exon 3 (coding exon 2) of the COL6A2 gene. This alteration results from a G to A substitution at nucleotide position 544, causing the glutamic acid (E) at amino acid position 182 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Bethlem myopathy 1A Benign:1
Jan 21, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.20
BayesDel_addAF
Benign
-0.22
T
BayesDel_noAF
Benign
-0.20
CADD
Uncertain
25
DANN
Uncertain
0.99
DEOGEN2
Benign
0.23
T;.;.;.
Eigen
Benign
-0.046
Eigen_PC
Benign
0.065
FATHMM_MKL
Uncertain
0.97
D
LIST_S2
Uncertain
0.91
D;D;.;D
M_CAP
Uncertain
0.14
D
MetaRNN
Benign
0.30
T;T;T;T
MetaSVM
Benign
-0.70
T
MutationAssessor
Benign
1.7
L;L;L;L
PrimateAI
Benign
0.46
T
PROVEAN
Benign
-1.5
N;N;N;N
REVEL
Uncertain
0.32
Sift
Benign
0.14
T;T;T;T
Sift4G
Benign
0.20
T;T;T;T
Polyphen
0.53
P;B;B;D
Vest4
0.40
MVP
0.89
MPC
0.16
ClinPred
0.049
T
GERP RS
4.3
Varity_R
0.16
gMVP
0.66

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: rs374504636; hg19: chr21-47532321; COSMIC: COSV104535883; COSMIC: COSV104535883; API