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rs201854898

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 0P and 1B. BP6

The NM_001849.4(COL6A2):c.2894G>A(p.Arg965His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000398 in 1,609,518 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R965C) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 34)
Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

COL6A2
NM_001849.4 missense

Scores

13
6

Clinical Significance

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

Conservation

PhyloP100: 3.51
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 Likely_benign. Variant got -1 ACMG points.

BP6
Variant 21-46132386-G-A is Benign according to our data. Variant chr21-46132386-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1933928.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1}.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
COL6A2NM_001849.4 linkuse as main transcriptc.2894G>A p.Arg965His missense_variant 28/28 ENST00000300527.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
COL6A2ENST00000300527.9 linkuse as main transcriptc.2894G>A p.Arg965His missense_variant 28/281 NM_001849.4 P1P12110-1

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152224
Hom.:
0
Cov.:
34
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000285
AC:
7
AN:
245468
Hom.:
0
AF XY:
0.00000747
AC XY:
1
AN XY:
133804
show subpopulations
Gnomad AFR exome
AF:
0.0000625
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000131
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000180
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000425
AC:
62
AN:
1457176
Hom.:
0
Cov.:
35
AF XY:
0.0000372
AC XY:
27
AN XY:
724990
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000504
Gnomad4 SAS exome
AF:
0.000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000414
Gnomad4 OTH exome
AF:
0.0000663
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152342
Hom.:
0
Cov.:
34
AF XY:
0.0000134
AC XY:
1
AN XY:
74500
show subpopulations
Gnomad4 AFR
AF:
0.0000240
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000207
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000280
Hom.:
0
Bravo
AF:
0.00000378
ExAC
AF:
0.0000330
AC:
4
EpiCase
AF:
0.00
EpiControl
AF:
0.000119

ClinVar

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

Submissions by phenotype

not provided Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingRevvity Omics, RevvityMar 01, 2021- -
Bethlem myopathy 1A Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeNov 13, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.20
BayesDel_addAF
Benign
-0.095
T
BayesDel_noAF
Benign
-0.14
Cadd
Pathogenic
32
Dann
Uncertain
1.0
DEOGEN2
Benign
0.29
T
Eigen
Uncertain
0.43
Eigen_PC
Uncertain
0.35
FATHMM_MKL
Uncertain
0.78
D
LIST_S2
Uncertain
0.86
D
M_CAP
Uncertain
0.28
D
MetaRNN
Uncertain
0.49
T
MetaSVM
Uncertain
0.024
D
MutationAssessor
Uncertain
2.2
M
MutationTaster
Benign
1.0
D
PrimateAI
Uncertain
0.51
T
PROVEAN
Benign
-2.2
N
REVEL
Uncertain
0.64
Sift
Uncertain
0.014
D
Sift4G
Uncertain
0.015
D
Polyphen
1.0
D
Vest4
0.40
MutPred
0.70
Gain of ubiquitination at K966 (P = 0.1245);
MVP
0.94
MPC
0.65
ClinPred
0.31
T
GERP RS
3.5
Varity_R
0.086
gMVP
0.80

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: rs201854898; hg19: chr21-47552300; COSMIC: COSV52425683; COSMIC: COSV52425683; API