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

Scores

Not classified

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -1.20
Variant links:
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

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
PCSK9NM_174936.4 linkc.1503+68_1503+71dupGTGT intron_variant ENST00000302118.5 NP_777596.2 Q8NBP7-1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
PCSK9ENST00000302118.5 linkc.1503+19_1503+20insGTGT intron_variant 1 NM_174936.4 ENSP00000303208.5 Q8NBP7-1

Frequencies

GnomAD3 genomes
AF:
0.00296
AC:
421
AN:
142416
Hom.:
2
Cov.:
0
show subpopulations
Gnomad AFR
AF:
0.00424
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00110
Gnomad ASJ
AF:
0.000595
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000914
Gnomad FIN
AF:
0.00536
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00286
Gnomad OTH
AF:
0.00154
GnomAD4 exome
AF:
0.000942
AC:
1310
AN:
1390592
Hom.:
0
Cov.:
0
AF XY:
0.000999
AC XY:
689
AN XY:
689450
show subpopulations
Gnomad4 AFR exome
AF:
0.00143
Gnomad4 AMR exome
AF:
0.000860
Gnomad4 ASJ exome
AF:
0.000805
Gnomad4 EAS exome
AF:
0.000162
Gnomad4 SAS exome
AF:
0.00139
Gnomad4 FIN exome
AF:
0.00322
Gnomad4 NFE exome
AF:
0.000827
Gnomad4 OTH exome
AF:
0.000905
GnomAD4 genome
AF:
0.00296
AC:
422
AN:
142496
Hom.:
2
Cov.:
0
AF XY:
0.00291
AC XY:
201
AN XY:
69036
show subpopulations
Gnomad4 AFR
AF:
0.00425
Gnomad4 AMR
AF:
0.00110
Gnomad4 ASJ
AF:
0.000595
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000915
Gnomad4 FIN
AF:
0.00536
Gnomad4 NFE
AF:
0.00286
Gnomad4 OTH
AF:
0.00153

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 submitterclinical testingWomen's Health and Genetics/Laboratory Corporation of America, LabCorpSep 30, 2019Variant 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 submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpJan 31, 2024- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs35115360; hg19: chr1-55524339; API