chr16-2109089-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001009944.3(PKD1):c.6078C>T(p.Val2026Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00159 in 1,603,832 control chromosomes in the GnomAD database, including 20 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00085 ( 1 hom., cov: 33)

Exomes 𝑓: 0.0017 ( 19 hom. )

Consequence

PKD1
NM_001009944.3 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 0.620

Publications

0 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: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.56).

BP6

Variant 16-2109089-G-A is Benign according to our data. Variant chr16-2109089-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 256986.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.62 with no splicing effect.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000847 (129/152370) while in subpopulation SAS AF = 0.0118 (57/4832). AF 95% confidence interval is 0.00935. There are 1 homozygotes in GnomAd4. There are 81 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 19 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PKD1	NM_001009944.3 link	c.6078C>T	p.Val2026Val	synonymous_variant	Exon 15 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.6078C>T	p.Val2026Val	synonymous_variant	Exon 15 of 46	1	NM_001009944.3	ENSP00000262304.4		P98161-1

Frequencies

GnomAD3 genomes

AF:

0.000847

AC:

129

AN:

152252

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.0118

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000882

Gnomad OTH

AF:

0.000956

GnomAD2 exomes

AF:

0.00191

AC:

466

AN:

243746

AF XY:

0.00256

show subpopulations

Gnomad AFR exome

AF:

0.0000658

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000483

Gnomad NFE exome

AF:

0.000897

Gnomad OTH exome

AF:

0.000502

GnomAD4 exome

AF:

0.00166

AC:

2415

AN:

1451462

Hom.:

Cov.:

AF XY:

0.00204

AC XY:

1471

AN XY:

720444

show subpopulations

African (AFR)

AF:

0.000150

AC:

AN:

33318

American (AMR)

AF:

0.000180

AC:

AN:

44544

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26048

East Asian (EAS)

AF:

0.0000254

AC:

AN:

39438

South Asian (SAS)

AF:

0.0117

AC:

1006

AN:

86078

European-Finnish (FIN)

AF:

0.0000393

AC:

AN:

50884

Middle Eastern (MID)

AF:

0.000945

AC:

AN:

5290

European-Non Finnish (NFE)

AF:

0.00119

AC:

1317

AN:

1106056

Other (OTH)

AF:

0.00119

AC:

AN:

59806

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

158

315

473

630

788

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

128

192

256

320

<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:

0.000847

AC:

129

AN:

152370

Hom.:

Cov.:

AF XY:

0.00109

AC XY:

AN XY:

74506

show subpopulations

African (AFR)

AF:

0.000168

AC:

AN:

41592

American (AMR)

AF:

0.0000653

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5190

South Asian (SAS)

AF:

0.0118

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.0000941

AC:

AN:

10632

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000882

AC:

AN:

68022

Other (OTH)

AF:

0.000946

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.000916

Hom.:

Bravo

AF:

0.000536

Asia WGS

AF:

0.00318

AC:

AN:

3478

EpiCase

AF:

0.000927

EpiControl

AF:

0.000830

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:5

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Dec 19, 2022

Genetic Services Laboratory, University of Chicago

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

May 03, 2021

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Polycystic kidney disease, adult type

Benign:1

Dec 19, 2018

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Polycystic kidney disease

Benign:1

Department of Pathology and Laboratory Medicine, Sinai Health System

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

The PKD1 p.Val2026Val variant was identified as a polymorphism in 1 of 164 proband chromosomes (frequency: 0.006) from individuals or families with ADPKD (Garcia-Gonzalez 2007). The variant was also identified in dbSNP (ID: rs147253810) as â€šÃ„ÃºNAâ€šÃ„Ã¹, with a minor allele frequency of 0.0016 (8 of 5000 chromosomes) in the 1000 Genome Project; the NHLBI GO Exome Sequencing Project in 8 of 8572 European American chromosomes, the Exome Aggregation Consortium database (March 14, 2016) in 245 (3 homozygous) of 114048 chromosomes (freq. 0.002148) in the following populations: South Asian in 199 of 16220 chromosomes (freq. 0.01227), European (Non-Finnish) in 42 of 61954 chromosomes (freq. 0.0006779), Latino in 2 of 11342 chromosomes (freq. 0.0001763), African in 1 of 8888 chromosomes (freq. 0.0001125), and other in 1 of 840 chromosomes (freq. 0.00119), but was not seen in East Asian and Finnish populations, increasing the likelihood this could be a low frequency benign variant. In addition we cannot be certain that data from control databases is specific to PKD1 and not from one of the six PKD1 pseudogenes. The variant was identified in GeneInsight COGR (as benign) and the ADPKD Mutation Database (as likely neutral). The p.Val2026Val variant is not expected to have clinical significance because it does not result in a change of amino acid and is not located in a known consensus splice site. In addition, in silico or computational prediction software programs (SpliceSiteFinder, MaxEntScan, NNSPLICE, GeneSplicer, HumanSpliceFinder) do not predict a difference in splicing. In summary, based on the above information, this variant is classified as benign. -

not provided

Benign:1

Nov 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

PKD1: BP4, BP7, BS1, BS2 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.56

CADD

Benign

4.3

(source)

DANN

Benign

0.80

PhyloP100

0.62

Mutation Taster

=100/0

polymorphism

(source)

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

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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