rs529066905

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_001009944.3(PKD1):c.776G>A(p.Cys259Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.000261 in 1,533,570 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00026 ( 0 hom. )

Consequence

PKD1
NM_001009944.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 6.18

Publications

5 publications found

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 Gene-Disease associations (from GenCC):

autosomal dominant polycystic kidney disease
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
polycystic kidney disease 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
autosomal recessive polycystic kidney disease
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
Caroli disease
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp

PKD1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PKD1	NM_001009944.3 link	c.776G>A	p.Cys259Tyr	missense_variant	Exon 5 of 46	ENST00000262304.9	NP_001009944.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PKD1	ENST00000262304.9 link	c.776G>A	p.Cys259Tyr	missense_variant	Exon 5 of 46	1	NM_001009944.3	ENSP00000262304.4	P98161-1
PKD1	ENST00000423118.5 link	c.776G>A	p.Cys259Tyr	missense_variant	Exon 5 of 46	1		ENSP00000399501.1	P98161-3
PKD1	ENST00000488185.2 link	c.-140G>A		upstream_gene_variant		5		ENSP00000456672.1	H3BSE9
PKD1	ENST00000570150.1 link	n.-92G>A		upstream_gene_variant		5

Frequencies

GnomAD3 genomes

AF:

0.000243

AC:

AN:

152074

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000208

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000486

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000152

AC:

AN:

138576

AF XY:

0.000159

show subpopulations

Gnomad AFR exome

AF:

0.000148

Gnomad AMR exome

AF:

0.0000814

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000313

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000264

AC:

364

AN:

1381378

Hom.:

Cov.:

AF XY:

0.000271

AC XY:

185

AN XY:

682724

show subpopulations

African (AFR)

AF:

0.000159

AC:

AN:

31494

American (AMR)

AF:

0.0000837

AC:

AN:

35832

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25148

East Asian (EAS)

AF:

0.00

AC:

AN:

35844

South Asian (SAS)

AF:

0.0000503

AC:

AN:

79552

European-Finnish (FIN)

AF:

0.00

AC:

AN:

37450

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4056

European-Non Finnish (NFE)

AF:

0.000317

AC:

341

AN:

1074392

Other (OTH)

AF:

0.000191

AC:

AN:

57610

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000243

AC:

AN:

152192

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74392

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41536

American (AMR)

AF:

0.0000653

AC:

AN:

15314

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5160

South Asian (SAS)

AF:

0.000208

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000486

AC:

AN:

67962

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.526

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000194

Hom.:

Bravo

AF:

0.000178

ExAC

AF:

0.0000618

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Feb 21, 2022

GeneDx

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant does not alter protein structure/function; This variant is associated with the following publications: (PMID: 17582161, 33502802, Izzi2022[paper], 31738409) -

Aug 17, 2021

Athena Diagnostics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Uncertain:1

Nov 05, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: PKD1 c.776G>A (p.Cys259Tyr) results in a non-conservative amino acid change located in the WSC domain profile (IPR002889) of the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00015 in 138576 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in PKD1 causing Polycystic Kidney Disease 1 (0.00015 vs 0.0005), allowing no conclusion about variant significance. c.776G>A has been reported in the literature in individuals affected with Polycystic Kidney Disease 1 (Rossetti_2007, Izzi_2022, Mansilla_2021). These data indicate that the variant may be associated with disease. Co-occurrences with other pathogenic variant(s) have been reported (Yu_2022, PKD1 c.4369_4370delTC, p.Ala1458fsX64), providing supporting evidence for a benign role. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The available evidence is currently insufficient to determine the role of this variant in disease. The following publications have been ascertained in the context of this evaluation (PMID: 35497784, 31738409, 17582161, 35778421). ClinVar contains an entry for this variant (Variation ID: 448009). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Polycystic kidney disease, adult type

Uncertain:1

Dec 06, 2019

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

PKD1-related disorder

Uncertain:1

Nov 21, 2023

PreventionGenetics, part of Exact Sciences

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

The PKD1 c.776G>A variant is predicted to result in the amino acid substitution p.Cys259Tyr. This variant was reported in an individual with polycystic kidney disease (Rossetti et al. 2007. PubMed ID: 17582161). This variant is reported in 0.033% of alleles in individuals of European (Non-Finnish) descent in gnomAD (http://gnomad.broadinstitute.org/variant/16-2168217-C-T). At this time, 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

Pathogenic

0.60

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.22

CADD

Uncertain

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.27

T;.

Eigen

Uncertain

0.34

Eigen_PC

Benign

0.20

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.66

T;T

M_CAP

Pathogenic

0.84

MetaRNN

Uncertain

0.73

D;D

MetaSVM

Benign

-0.34

MutationAssessor

Uncertain

2.7

M;M

PhyloP100

6.2

PrimateAI

Uncertain

0.76

PROVEAN

Benign

-2.3

N;N

REVEL

Uncertain

0.40

Sift

Uncertain

0.010

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.70

MVP

0.75

ClinPred

0.14

GERP RS

4.4

PromoterAI

0.044

Neutral

(source)

Varity_R

0.34

gMVP

0.92

Mutation Taster

=13/87

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over