rs1553557605
Positions:
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_004369.4(COL6A3):c.4684G>T(p.Val1562Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 32)
Consequence
COL6A3
NM_004369.4 missense
NM_004369.4 missense
Scores
17
Clinical Significance
Conservation
PhyloP100: 0.00400
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]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 0 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (MetaRNN=0.11164871).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
COL6A3 | NM_004369.4 | c.4684G>T | p.Val1562Leu | missense_variant | 10/44 | ENST00000295550.9 | |
COL6A3 | NM_057167.4 | c.4066G>T | p.Val1356Leu | missense_variant | 9/43 | ||
COL6A3 | NM_057166.5 | c.2863G>T | p.Val955Leu | missense_variant | 7/41 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
COL6A3 | ENST00000295550.9 | c.4684G>T | p.Val1562Leu | missense_variant | 10/44 | 1 | NM_004369.4 | P1 | |
COL6A3 | ENST00000472056.5 | c.2863G>T | p.Val955Leu | missense_variant | 7/41 | 1 | |||
COL6A3 | ENST00000353578.9 | c.4066G>T | p.Val1356Leu | missense_variant | 9/43 | 5 | |||
COL6A3 | ENST00000684597.1 | c.117-103G>T | intron_variant |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Cov.: 34
GnomAD4 exome
Cov.:
34
GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Bethlem myopathy 1A Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Oct 04, 2022 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt COL6A3 protein function. ClinVar contains an entry for this variant (Variation ID: 476526). This variant has not been reported in the literature in individuals affected with COL6A3-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces valine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 1562 of the COL6A3 protein (p.Val1562Leu). - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
N
LIST_S2
Benign
T;T;T;T;.
M_CAP
Benign
D
MetaRNN
Benign
T;T;T;T;T
MetaSVM
Benign
T
MutationTaster
Benign
D;D;D;D;D;D
PrimateAI
Benign
T
PROVEAN
Benign
N;N;N;.;N
REVEL
Benign
Sift
Benign
T;T;T;.;T
Sift4G
Benign
T;T;T;T;T
Polyphen
B;B;.;.;B
Vest4
MutPred
0.48
.;Loss of helix (P = 0.1706);.;.;.;
MVP
MPC
0.17
ClinPred
T
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at