2-42048336-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_138370.3(PKDCC):c.137G>A(p.Gly46Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000062 in 1,176,844 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000053 ( 0 hom. )

Consequence

PKDCC
NM_138370.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: -0.268

Variant links:

Genes affected

PKDCC (HGNC:25123): (protein kinase domain containing, cytoplasmic) Enables non-membrane spanning protein tyrosine kinase activity. Involved in peptidyl-tyrosine phosphorylation and skeletal system development. Located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

PKDCC links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0144642).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PKDCC	NM_138370.3 linkuse as main transcript	c.137G>A	p.Gly46Asp	missense_variant	1/7	ENST00000294964.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PKDCC	ENST00000294964.6 linkuse as main transcript	c.137G>A	p.Gly46Asp	missense_variant	1/7	1	NM_138370.3	P1
PKDCC	ENST00000401498.6 linkuse as main transcript	c.137G>A	p.Gly46Asp	missense_variant, NMD_transcript_variant	1/8	5

Frequencies

GnomAD3 genomes

AF:

0.000122

AC:

AN:

147218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000489

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00471

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000534

AC:

AN:

1029626

Hom.:

Cov.:

AF XY:

0.0000593

AC XY:

AN XY:

489168

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00316

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000113

Gnomad4 OTH exome

AF:

0.000231

GnomAD4 genome

AF:

0.000122

AC:

AN:

147218

Hom.:

Cov.:

AF XY:

0.000126

AC XY:

AN XY:

71644

show subpopulations

Gnomad4 AFR

AF:

0.0000489

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00471

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.000151

ExAC

AF:

0.000284

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 14, 2023

The c.137G>A (p.G46D) alteration is located in exon 1 (coding exon 1) of the PKDCC gene. This alteration results from a G to A substitution at nucleotide position 137, causing the glycine (G) at amino acid position 46 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jul 12, 2022

This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 46 of the PKDCC protein (p.Gly46Asp). This variant is present in population databases (rs780735438, gnomAD 0.3%). This variant has not been reported in the literature in individuals affected with PKDCC-related conditions. ClinVar contains an entry for this variant (Variation ID: 1484544). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.48

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.026

Eigen

Benign

-0.92

Eigen_PC

Benign

-0.83

FATHMM_MKL

Benign

0.047

LIST_S2

Benign

0.52

M_CAP

Benign

0.020

MetaRNN

Benign

0.014

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

MutationTaster

Benign

0.99

PrimateAI

Pathogenic

0.84

PROVEAN

Benign

0.79

REVEL

Benign

0.069

Sift

Benign

0.74

Sift4G

Benign

0.59

Polyphen

0.028

Vest4

0.13

MutPred

0.18

Loss of catalytic residue at G46 (P = 0.0516);

MVP

0.33

MPC

2.2

ClinPred

0.069

GERP RS

1.1

Varity_R

0.081

gMVP

0.23

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