21-45987627-G-A
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Variant summary
Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2
The NM_001848.3(COL6A1):c.777G>A(p.Pro259=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000868 in 1,611,166 control chromosomes in the GnomAD database, including 17 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).
Frequency
Genomes: 𝑓 0.0045 ( 9 hom., cov: 32)
Exomes 𝑓: 0.00049 ( 8 hom. )
Consequence
COL6A1
NM_001848.3 synonymous
NM_001848.3 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: -8.49
Genes affected
COL6A1 (HGNC:2211): (collagen type VI alpha 1 chain) The collagens are a superfamily of proteins that play a role in maintaining the integrity of various tissues. Collagens are extracellular matrix proteins and have a triple-helical domain as their common structural element. Collagen VI is a major structural component of microfibrils. The basic structural unit of collagen VI is a heterotrimer of the alpha1(VI), alpha2(VI), and alpha3(VI) chains. The alpha2(VI) and alpha3(VI) chains are encoded by the COL6A2 and COL6A3 genes, respectively. The protein encoded by this gene is the alpha 1 subunit of type VI collagen (alpha1(VI) chain). Mutations in the genes that code for the collagen VI subunits result in the autosomal dominant disorder, Bethlem myopathy. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -21 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.64).
BP6
Variant 21-45987627-G-A is Benign according to our data. Variant chr21-45987627-G-A is described in ClinVar as [Benign]. Clinvar id is 258306.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-8.49 with no splicing effect.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00446 (679/152258) while in subpopulation AFR AF= 0.0159 (661/41540). AF 95% confidence interval is 0.0149. There are 9 homozygotes in gnomad4. There are 328 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 9 AD,AR gene
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
COL6A1 | NM_001848.3 | c.777G>A | p.Pro259= | synonymous_variant | 8/35 | ENST00000361866.8 | NP_001839.2 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
COL6A1 | ENST00000361866.8 | c.777G>A | p.Pro259= | synonymous_variant | 8/35 | 1 | NM_001848.3 | ENSP00000355180 | P1 | |
COL6A1 | ENST00000492851.1 | n.429G>A | non_coding_transcript_exon_variant | 2/2 | 3 |
Frequencies
GnomAD3 genomes AF: 0.00447 AC: 680AN: 152142Hom.: 9 Cov.: 32
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GnomAD3 exomes AF: 0.00108 AC: 267AN: 247982Hom.: 0 AF XY: 0.000698 AC XY: 94AN XY: 134692
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GnomAD4 exome AF: 0.000494 AC: 720AN: 1458908Hom.: 8 Cov.: 34 AF XY: 0.000433 AC XY: 314AN XY: 725710
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GnomAD4 genome AF: 0.00446 AC: 679AN: 152258Hom.: 9 Cov.: 32 AF XY: 0.00441 AC XY: 328AN XY: 74452
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ClinVar
Significance: Benign
Submissions summary: Benign:4
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not provided Benign:2
Benign, criteria provided, single submitter | clinical testing | GeneDx | Nov 15, 2019 | This variant is associated with the following publications: (PMID: 26653219) - |
Benign, criteria provided, single submitter | not provided | Breakthrough Genomics, Breakthrough Genomics | - | - - |
not specified Benign:1
Benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | - | - - |
Bethlem myopathy 1A Benign:1
Benign, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jan 28, 2024 | - - |
Computational scores
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BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
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Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at