rs78365682
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Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6BP7
The NM_004369.4(COL6A3):c.1056C>T(p.Leu352=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00007 in 1,614,180 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 0.00037 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000038 ( 0 hom. )
Consequence
COL6A3
NM_004369.4 synonymous
NM_004369.4 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: -0.100
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 Likely_benign. Variant got -4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.51).
BP6
?
Variant 2-237387838-G-A is Benign according to our data. Variant chr2-237387838-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 259295.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=1}.
BP7
?
Synonymous conserved (PhyloP=-0.1 with no splicing effect.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
COL6A3 | NM_004369.4 | c.1056C>T | p.Leu352= | synonymous_variant | 4/44 | ENST00000295550.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
COL6A3 | ENST00000295550.9 | c.1056C>T | p.Leu352= | synonymous_variant | 4/44 | 1 | NM_004369.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.000361 AC: 55AN: 152222Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.0000717 AC: 18AN: 250948Hom.: 0 AF XY: 0.0000516 AC XY: 7AN XY: 135672
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GnomAD4 exome AF: 0.0000383 AC: 56AN: 1461840Hom.: 0 Cov.: 32 AF XY: 0.0000413 AC XY: 30AN XY: 727220
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GnomAD4 genome ? AF: 0.000374 AC: 57AN: 152340Hom.: 0 Cov.: 33 AF XY: 0.000295 AC XY: 22AN XY: 74490
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ClinVar
Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Dec 12, 2017 | - - |
not specified Benign:1
Likely benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | - | - - |
Bethlem myopathy 1A Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Jun 05, 2023 | - - |
Computational scores
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Name
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at