1-55058666-CGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGT-CGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGTGT
Variant summary
Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP6_Very_StrongBS1BS2
The NM_174936.4(PCSK9):c.1503+68_1503+71dupGTGT variant causes a intron change involving the alteration of a non-conserved nucleotide. Variant has been reported in ClinVar as Likely benign (★★).
Frequency
Genomes: 𝑓 0.0030 ( 2 hom., cov: 0)
Exomes 𝑓: 0.00094 ( 0 hom. )
Consequence
PCSK9
NM_174936.4 intron
NM_174936.4 intron
Scores
Not classified
Clinical Significance
Conservation
PhyloP100: -1.20
Genes affected
PCSK9 (HGNC:20001): (proprotein convertase subtilisin/kexin type 9) This gene encodes a member of the subtilisin-like proprotein convertase family, which includes proteases that process protein and peptide precursors trafficking through regulated or constitutive branches of the secretory pathway. The encoded protein undergoes an autocatalytic processing event with its prosegment in the ER and is constitutively secreted as an inactive protease into the extracellular matrix and trans-Golgi network. It is expressed in liver, intestine and kidney tissues and escorts specific receptors for lysosomal degradation. It plays a role in cholesterol and fatty acid metabolism. Mutations in this gene have been associated with autosomal dominant familial hypercholesterolemia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -16 ACMG points.
BP6
Variant 1-55058666-C-CGTGT is Benign according to our data. Variant chr1-55058666-C-CGTGT is described in ClinVar as [Likely_benign]. Clinvar id is 928567.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00296 (422/142496) while in subpopulation AFR AF= 0.00425 (161/37860). AF 95% confidence interval is 0.00372. There are 2 homozygotes in gnomad4. There are 201 alleles in male gnomad4 subpopulation. Median coverage is 0. This position pass quality control queck.
BS2
High AC in GnomAd4 at 422 AD gene.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00296 AC: 421AN: 142416Hom.: 2 Cov.: 0
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GnomAD4 exome AF: 0.000942 AC: 1310AN: 1390592Hom.: 0 Cov.: 0 AF XY: 0.000999 AC XY: 689AN XY: 689450
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GnomAD4 genome AF: 0.00296 AC: 422AN: 142496Hom.: 2 Cov.: 0 AF XY: 0.00291 AC XY: 201AN XY: 69036
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ClinVar
Significance: Benign/Likely benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not specified Benign:1
Benign, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Sep 30, 2019 | Variant summary: PCSK9 c.1503+68_1503+71dupGTGT is located at a highly polymorphic GT repeat region in intron and not widely known to affect splicing. 4/4 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant was absent in 149146 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.1503+68_1503+71dupGTGT in individuals affected with Familial Hypercholesterolemia and no experimental evidence demonstrating its impact on protein function have been reported. One database lists this variant as benign (LOVD). Based on the evidence outlined above, the variant was classified as benign. - |
Hypercholesterolemia, autosomal dominant, 3 Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jan 31, 2024 | - - |
Computational scores
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Find out detailed SpliceAI scores and Pangolin per-transcript scores at