4-127890181-C-T

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_014264.5(PLK4):c.1775C>T(p.Ser592Phe) variant causes a missense change. The variant allele was found at a frequency of 0.000126 in 1,613,484 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00060 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000077 ( 0 hom. )

Consequence

PLK4
NM_014264.5 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 4.46

Variant links:

Genes affected

PLK4 (HGNC:11397): (polo like kinase 4) This gene encodes a member of the polo family of serine/threonine protein kinases. The protein localizes to centrioles, complex microtubule-based structures found in centrosomes, and regulates centriole duplication during the cell cycle. Three alternatively spliced transcript variants that encode different protein isoforms have been found for this gene. [provided by RefSeq, Jun 2010]

PLK4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.023373157).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000597 (91/152306) while in subpopulation AFR AF= 0.002 (83/41584). AF 95% confidence interval is 0.00165. There are 0 homozygotes in gnomad4. There are 48 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLK4	NM_014264.5 link	c.1775C>T	p.Ser592Phe	missense_variant	Exon 7 of 16	ENST00000270861.10	NP_055079.3	O00444-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLK4	ENST00000270861.10 link	c.1775C>T	p.Ser592Phe	missense_variant	Exon 7 of 16	1	NM_014264.5	ENSP00000270861.5		O00444-1

Frequencies

GnomAD3 genomes

AF:

0.000598

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00200

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000131

AC:

AN:

250974

Hom.:

AF XY:

0.0000664

AC XY:

AN XY:

135636

show subpopulations

Gnomad AFR exome

AF:

0.00172

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000767

AC:

112

AN:

1461178

Hom.:

Cov.:

AF XY:

0.0000729

AC XY:

AN XY:

726888

show subpopulations

Gnomad4 AFR exome

AF:

0.00272

Gnomad4 AMR exome

AF:

0.000179

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.000597

AC:

AN:

152306

Hom.:

Cov.:

AF XY:

0.000644

AC XY:

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.00200

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000107

Hom.:

Bravo

AF:

0.000831

ESP6500AA

AF:

0.00227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000173

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Jun 06, 2019

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Has not been previously published as pathogenic or benign to our knowledge -

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces serine, which is neutral and polar, with phenylalanine, which is neutral and non-polar, at codon 592 of the PLK4 protein (p.Ser592Phe). This variant is present in population databases (rs141081905, gnomAD 0.1%). This variant has not been reported in the literature in individuals affected with PLK4-related conditions. ClinVar contains an entry for this variant (Variation ID: 436340). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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. -

not specified

Uncertain:1

Aug 19, 2016

Genetic Services Laboratory, University of Chicago

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.38

BayesDel_noAF

Benign

-0.35

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.34

T;T;.;T;.

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.37

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.91

D;D;D;T;D

M_CAP

Benign

0.026

MetaRNN

Benign

0.023

T;T;T;T;T

MetaSVM

Benign

-0.79

MutationAssessor

Uncertain

2.1

M;.;.;.;.

PrimateAI

Uncertain

0.48

PROVEAN

Uncertain

-3.5

D;D;D;D;D

REVEL

Benign

0.17

Sift

Uncertain

0.0050

D;D;D;D;D

Sift4G

Uncertain

0.033

D;D;D;D;D

Polyphen

0.99

D;.;D;.;.

Vest4

0.28

MVP

0.40

MPC

0.33

ClinPred

0.10

GERP RS

3.6

Varity_R

0.56

gMVP

0.099

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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