rs148851677
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Variant summary
Our verdict is Benign. Variant got -18 ACMG points: 2P and 20B. PM1BP4_StrongBP6_Very_StrongBS1BS2
The NM_004562.3(PRKN):āc.101A>Gā(p.Gln34Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00155 in 1,612,808 control chromosomes in the GnomAD database, including 32 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (ā ā ).
Frequency
Genomes: š 0.0033 ( 4 hom., cov: 32)
Exomes š: 0.0014 ( 28 hom. )
Consequence
PRKN
NM_004562.3 missense
NM_004562.3 missense
Scores
7
10
Clinical Significance
Conservation
PhyloP100: 2.70
Genes affected
PRKN (HGNC:8607): (parkin RBR E3 ubiquitin protein ligase) The precise function of this gene is unknown; however, the encoded protein is a component of a multiprotein E3 ubiquitin ligase complex that mediates the targeting of substrate proteins for proteasomal degradation. Mutations in this gene are known to cause Parkinson disease and autosomal recessive juvenile Parkinson disease. Alternative splicing of this gene produces multiple transcript variants encoding distinct isoforms. Additional splice variants of this gene have been described but currently lack transcript support. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -18 ACMG points.
PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 4 uncertain in NM_004562.3
BP4
Computational evidence support a benign effect (MetaRNN=0.011427194).
BP6
Variant 6-162443380-T-C is Benign according to our data. Variant chr6-162443380-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 468584.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-162443380-T-C is described in Lovd as [Benign].
BS1
Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00326 (496/152152) while in subpopulation SAS AF= 0.0162 (78/4828). AF 95% confidence interval is 0.0133. There are 4 homozygotes in gnomad4. There are 252 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 4 AR gene
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PRKN | NM_004562.3 | c.101A>G | p.Gln34Arg | missense_variant | 2/12 | ENST00000366898.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PRKN | ENST00000366898.6 | c.101A>G | p.Gln34Arg | missense_variant | 2/12 | 1 | NM_004562.3 | P1 |
Frequencies
GnomAD3 genomes AF: 0.00324 AC: 493AN: 152034Hom.: 4 Cov.: 32
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GnomAD3 exomes AF: 0.00292 AC: 733AN: 251368Hom.: 12 AF XY: 0.00334 AC XY: 454AN XY: 135846
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GnomAD4 exome AF: 0.00137 AC: 2007AN: 1460656Hom.: 28 Cov.: 33 AF XY: 0.00171 AC XY: 1243AN XY: 726604
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GnomAD4 genome AF: 0.00326 AC: 496AN: 152152Hom.: 4 Cov.: 32 AF XY: 0.00339 AC XY: 252AN XY: 74396
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ClinVar
Significance: Benign/Likely benign
Submissions summary: Benign:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Autosomal recessive juvenile Parkinson disease 2 Benign:2
Likely benign, criteria provided, single submitter | research | Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard | - | The heterozygous p.Gln34Arg variant in PARK2 has been identified in at least 5 individuals with Parkinson disease (PMID: 16793319, 22766139), but also has been identified in >1% of South Asian chromosomes and 7 homozygotes by ExAC (http://gnomad.broadinstitute.org/). In vitro functional studies provide some evidence that the p.Gln34Arg variant may not impact protein structure (PMID: 21348451). However, these types of assays may not accurately represent biological function. In summary, although additional studies are required to fully establish its clinical significance, this variant meets criteria to be classified as likely benign for Parkinson disease. - |
Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Apr 28, 2017 | This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to determine this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. - |
not provided Benign:2
Benign, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Jul 01, 2024 | PRKN: BS1, BS2 - |
Benign, criteria provided, single submitter | clinical testing | Invitae | Jan 15, 2024 | - - |
not specified Benign:1
Benign, criteria provided, single submitter | clinical testing | Athena Diagnostics | Nov 12, 2020 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Uncertain
DEOGEN2
Benign
T;.;.;T
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Benign
T;T;T;T
MetaRNN
Benign
T;T;T;T
MetaSVM
Uncertain
D
MutationTaster
Benign
D;D;D;D;D;N
PrimateAI
Benign
T
PROVEAN
Benign
N;N;N;N
REVEL
Uncertain
Sift
Uncertain
D;D;T;D
Sift4G
Benign
T;T;T;T
Polyphen
D;.;.;.
Vest4
MVP
MPC
ClinPred
T
GERP RS
Varity_R
gMVP
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