rs772316684

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM1PP3BS2_Supporting

The NM_001009944.3(PKD1):c.997G>A(p.Val333Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000152 in 1,577,832 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00016 ( 1 hom. )

Consequence

PKD1
NM_001009944.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 3.37

Variant links:

Genes affected

PKD1 (HGNC:9008): (polycystin 1, transient receptor potential channel interacting) This gene encodes a member of the polycystin protein family. The encoded glycoprotein contains a large N-terminal extracellular region, multiple transmembrane domains and a cytoplasmic C-tail. It is an integral membrane protein that functions as a regulator of calcium permeable cation channels and intracellular calcium homoeostasis. It is also involved in cell-cell/matrix interactions and may modulate G-protein-coupled signal-transduction pathways. It plays a role in renal tubular development, and mutations in this gene cause autosomal dominant polycystic kidney disease type 1 (ADPKD1). ADPKD1 is characterized by the growth of fluid-filled cysts that replace normal renal tissue and result in end-stage renal failure. Splice variants encoding different isoforms have been noted for this gene. Also, six pseudogenes, closely linked in a known duplicated region on chromosome 16p, have been described. [provided by RefSeq, Oct 2008]

PKD1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM1

In a domain PKD 1 (size 87) in uniprot entity PKD1_HUMAN there are 10 pathogenic changes around while only 2 benign (83%) in NM_001009944.3

PP3

MetaRNN computational evidence supports a deleterious effect, 0.75

BS2

High AC in GnomAd4 at 12 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PKD1	NM_001009944.3 link	c.997G>A	p.Val333Met	missense_variant	Exon 5 of 46	ENST00000262304.9	NP_001009944.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PKD1	ENST00000262304.9 link	c.997G>A	p.Val333Met	missense_variant	Exon 5 of 46	1	NM_001009944.3	ENSP00000262304.4		P98161-1

Frequencies

GnomAD3 genomes

AF:

0.0000788

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00439

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000122

AC:

AN:

147486

Hom.:

AF XY:

0.000161

AC XY:

AN XY:

80938

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000391

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000128

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000233

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000160

AC:

228

AN:

1425610

Hom.:

Cov.:

AF XY:

0.000137

AC XY:

AN XY:

710102

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000823

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000197

Gnomad4 OTH exome

AF:

0.0000844

GnomAD4 genome

AF:

0.0000788

AC:

AN:

152222

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74362

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.000478

Bravo

AF:

0.0000982

ExAC

AF:

0.0000454

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Athena Diagnostics

Sep 28, 2016

- -

Polycystic kidney disease, adult type

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Victorian Clinical Genetics Services, Murdoch Childrens Research Institute

May 06, 2021

Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as VUS-3C. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with polycystic kidney disease (MIM#173900). (I) 0107 - This gene is associated with autosomal dominant disease, with rare reports of biallelic variants causing disease (OMIM). (I) 0200 - Variant is predicted to result in a missense amino acid change from valine to methionine. (I) 0251 - This variant is heterozygous. (I) 0302 - Variant is present in gnomAD (v2) <0.001 for a dominant condition (19 heterozygotes, 1 homozygote). (I) 0504 - Same amino acid change has been observed in placental mammals. (SB) 0600 - Variant is located in the annotated PKD domain (Pfam). (I) 0705 - No comparable missense variants have previous evidence for pathogenicity. (I) 0809 - Previous evidence of pathogenicity for this variant is inconclusive. This variant has been described as a VUS in the ClinVar database, and has been reported in one individual with ADPKD in a large cohort study (PMID: 23300259). (I) 0905 - No published segregation evidence has been identified for this variant. (I) 1007 - No published functional evidence has been identified for this variant. (I) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign -

PKD1-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Oct 11, 2023

The PKD1 c.997G>A variant is predicted to result in the amino acid substitution p.Val333Met. This variant was reported in an individual with polycystic kidney disease (Neumann et al. 2013. PubMed ID: 23300259). This variant is reported in 0.021% of alleles in individuals of European (Non-Finnish) descent in gnomAD with one homozygote documented (http://gnomad.broadinstitute.org/variant/16-2167996-C-T). Of note, at this position in mouse is a methionine (Met). Although we suspect this variant may be benign, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.52

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.17

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.34

T;.

Eigen

Benign

-0.0086

Eigen_PC

Benign

-0.054

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.76

T;T

M_CAP

Pathogenic

0.87

MetaRNN

Pathogenic

0.75

D;D

MetaSVM

Benign

-0.40

MutationAssessor

Uncertain

2.7

M;M

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-1.0

N;N

REVEL

Pathogenic

0.83

Sift

Benign

0.067

T;T

Sift4G

Benign

0.069

T;T

Polyphen

0.86

P;P

Vest4

0.74

MutPred

0.74

Loss of methylation at R330 (P = 0.1433);Loss of methylation at R330 (P = 0.1433);

MVP

0.87

ClinPred

0.18

GERP RS

4.1

Varity_R

0.23

gMVP

0.74

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over