rs371637449

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_004369.4(COL6A3):​c.6982C>T​(p.Pro2328Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000185 in 1,457,982 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P2328T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

COL6A3
NM_004369.4 missense

Scores

10
9

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.71

Publications

1 publications found
Variant links:
Genes affected
COL6A3 (HGNC:2213): (collagen type VI alpha 3 chain) This gene encodes the alpha-3 chain, one of the three alpha chains of type VI collagen, a beaded filament collagen found in most connective tissues. The alpha-3 chain of type VI collagen is much larger than the alpha-1 and -2 chains. This difference in size is largely due to an increase in the number of subdomains, similar to von Willebrand Factor type A domains, that are found in the amino terminal globular domain of all the alpha chains. 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 the type VI collagen genes are associated with Bethlem myopathy, a rare autosomal dominant proximal myopathy with early childhood onset. Mutations in this gene are also a cause of Ullrich congenital muscular dystrophy, also referred to as Ullrich scleroatonic muscular dystrophy, an autosomal recessive congenital myopathy that is more severe than Bethlem myopathy. Multiple transcript variants have been identified, but the full-length nature of only some of these variants has been described. [provided by RefSeq, Jun 2009]
COL6A3 Gene-Disease associations (from GenCC):
  • Bethlem myopathy 1A
    Inheritance: AD, AR, SD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Ambry Genetics
  • collagen 6-related myopathy
    Inheritance: AD, AR Classification: DEFINITIVE Submitted by: ClinGen
  • Ullrich congenital muscular dystrophy 1C
    Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
  • dystonia 27
    Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED, NO_KNOWN Submitted by: Illumina, Labcorp Genetics (formerly Invitae), ClinGen, Ambry Genetics, Orphanet
  • Ullrich congenital muscular dystrophy 1A
    Inheritance: AR, AD, SD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp
  • Bethlem myopathy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • Ullrich congenital muscular dystrophy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
COL6A3NM_004369.4 linkc.6982C>T p.Pro2328Ser missense_variant Exon 31 of 44 ENST00000295550.9 NP_004360.2
COL6A3NM_057167.4 linkc.6364C>T p.Pro2122Ser missense_variant Exon 30 of 43 NP_476508.2
COL6A3NM_057166.5 linkc.5161C>T p.Pro1721Ser missense_variant Exon 28 of 41 NP_476507.3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
COL6A3ENST00000295550.9 linkc.6982C>T p.Pro2328Ser missense_variant Exon 31 of 44 1 NM_004369.4 ENSP00000295550.4
COL6A3ENST00000472056.5 linkc.5161C>T p.Pro1721Ser missense_variant Exon 28 of 41 1 ENSP00000418285.1
COL6A3ENST00000353578.9 linkc.6364C>T p.Pro2122Ser missense_variant Exon 30 of 43 5 ENSP00000315873.4
COL6A3ENST00000491769.1 linkn.1236C>T non_coding_transcript_exon_variant Exon 8 of 20 5

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000410
AC:
1
AN:
244138
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000906
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000185
AC:
27
AN:
1457982
Hom.:
0
Cov.:
31
AF XY:
0.0000193
AC XY:
14
AN XY:
724662
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33448
American (AMR)
AF:
0.00
AC:
0
AN:
44294
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26030
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39684
South Asian (SAS)
AF:
0.0000118
AC:
1
AN:
85106
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53228
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5762
European-Non Finnish (NFE)
AF:
0.0000234
AC:
26
AN:
1110170
Other (OTH)
AF:
0.00
AC:
0
AN:
60260
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.436
Heterozygous variant carriers
0
1
2
4
5
6
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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
Cov.:
32
Alfa
AF:
0.0000530
Hom.:
0
TwinsUK
AF:
0.000270
AC:
1
ALSPAC
AF:
0.00
AC:
0
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.098
BayesDel_addAF
Uncertain
0.083
D
BayesDel_noAF
Benign
-0.10
CADD
Benign
20
DANN
Benign
0.94
DEOGEN2
Uncertain
0.56
.;D;.;D;.
Eigen
Benign
-0.30
Eigen_PC
Benign
-0.35
FATHMM_MKL
Benign
0.72
D
LIST_S2
Uncertain
0.95
D;D;D;D;.
M_CAP
Uncertain
0.25
D
MetaRNN
Uncertain
0.57
D;D;D;D;D
MetaSVM
Uncertain
0.57
D
MutationAssessor
Uncertain
2.3
.;M;.;.;.
PhyloP100
2.7
PrimateAI
Benign
0.34
T
PROVEAN
Uncertain
-3.9
D;D;D;D;D
REVEL
Benign
0.22
Sift
Uncertain
0.010
D;D;D;D;D
Sift4G
Uncertain
0.030
D;D;D;D;D
Polyphen
0.023
B;D;.;.;B
Vest4
0.19
MVP
0.84
MPC
0.15
ClinPred
0.21
T
GERP RS
3.7
Varity_R
0.11
gMVP
0.29
Mutation Taster
=89/11
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
Splicevardb
2.0
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

Other links and lift over

dbSNP: rs371637449; hg19: chr2-238256497; API