Variant chr4-88038323-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1PM5

The NM_000297.4(PKD2):c.916C>G(p.Arg306Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000372 in 1,613,598 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R306Q) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

PKD2
NM_000297.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 4.91

Variant links:

Genes affected

PKD2 (HGNC:9009): (polycystin 2, transient receptor potential cation channel) This gene encodes a member of the polycystin protein family. The encoded protein is a multi-pass membrane protein that functions as a calcium permeable cation channel, and is involved in calcium transport and calcium signaling in renal epithelial cells. This protein interacts with polycystin 1, and they may be partners in a common signaling cascade involved in tubular morphogenesis. Mutations in this gene are associated with autosomal dominant polycystic kidney disease type 2. [provided by RefSeq, Mar 2011]

PKD2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM1

In a topological_domain Extracellular (size 226) in uniprot entity PKD2_HUMAN there are 41 pathogenic changes around while only 9 benign (82%) in NM_000297.4

PM5

Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PKD2	NM_000297.4 linkuse as main transcript	c.916C>G	p.Arg306Gly	missense_variant	4/15	ENST00000237596.7	NP_000288.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PKD2	ENST00000237596.7 linkuse as main transcript	c.916C>G	p.Arg306Gly	missense_variant	4/15	1	NM_000297.4	ENSP00000237596	P1	Q13563-1
PKD2	ENST00000506367.1 linkuse as main transcript	n.363C>G		non_coding_transcript_exon_variant	2/3	3
PKD2	ENST00000506727.1 linkuse as main transcript	n.502C>G		non_coding_transcript_exon_variant	4/4	4

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461420

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727056

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152178

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Multiple renal cysts;C0730379:Anhydramnios

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Molecular Genetics laboratory, Necker Hospital

Dec 15, 2021

- -

Polycystic kidney disease 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Jan 10, 2022

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

0.0061

BayesDel_noAF

Benign

-0.23

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.29

Eigen

Benign

0.019

Eigen_PC

Benign

0.18

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.74

M_CAP

Benign

0.033

MetaRNN

Uncertain

0.45

MetaSVM

Benign

-0.82

MutationAssessor

Benign

1.1

MutationTaster

Benign

0.99

PrimateAI

Benign

0.25

PROVEAN

Benign

-1.6

REVEL

Benign

0.11

Sift

Benign

0.11

Sift4G

Benign

0.21

Polyphen

0.15

Vest4

0.48

MutPred

0.50

Gain of glycosylation at T301 (P = 0.0259);

MVP

0.48

MPC

0.45

ClinPred

0.76

GERP RS

5.3

Varity_R

0.63

gMVP

0.64

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