chr21-46391238-C-T

Position:

chr21-46391238-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_006031.6(PCNT):c.4078C>T(p.Arg1360Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000342 in 1,607,556 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

PCNT
NM_006031.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:2

Conservation

PhyloP100: 0.907

Variant links:

Genes affected

PCNT (HGNC:16068): (pericentrin) The protein encoded by this gene binds to calmodulin and is expressed in the centrosome. It is an integral component of the pericentriolar material (PCM). The protein contains a series of coiled-coil domains and a highly conserved PCM targeting motif called the PACT domain near its C-terminus. The protein interacts with the microtubule nucleation component gamma-tubulin and is likely important to normal functioning of the centrosomes, cytoskeleton, and cell-cycle progression. Mutations in this gene cause Seckel syndrome-4 and microcephalic osteodysplastic primordial dwarfism type II. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

PCNT 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=0.008003026).

BP6

Variant 21-46391238-C-T is Benign according to our data. Variant chr21-46391238-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 436192.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PCNT	NM_006031.6 linkuse as main transcript	c.4078C>T	p.Arg1360Cys	missense_variant	21/47	ENST00000359568.10	NP_006022.3	O95613-1
PCNT	NM_001315529.2 linkuse as main transcript	c.3724C>T	p.Arg1242Cys	missense_variant	21/47		NP_001302458.1	O95613-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PCNT	ENST00000359568.10 linkuse as main transcript	c.4078C>T	p.Arg1360Cys	missense_variant	21/47	1	NM_006031.6	ENSP00000352572.5		O95613-1

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00251

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

GnomAD3 exomes

AF:

0.000145

AC:

AN:

234690

Hom.:

AF XY:

0.000134

AC XY:

AN XY:

126920

show subpopulations

Gnomad AFR exome

AF:

0.000206

Gnomad AMR exome

AF:

0.0000302

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00165

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000173

GnomAD4 exome

AF:

0.0000247

AC:

AN:

1455268

Hom.:

Cov.:

AF XY:

0.0000207

AC XY:

AN XY:

723024

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.0000229

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000456

Gnomad4 SAS exome

AF:

0.0000118

Gnomad4 FIN exome

AF:

0.0000189

Gnomad4 NFE exome

AF:

0.00000541

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.000125

AC:

AN:

152288

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74454

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00251

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000616

Hom.:

Bravo

AF:

0.000113

ExAC

AF:

0.000190

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Aug 22, 2016

- -

Microcephalic osteodysplastic primordial dwarfism type II

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

PCNT-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 28, 2022

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.52

CADD

Benign

DANN

Benign

0.91

DEOGEN2

Benign

0.23

Eigen

Benign

-0.95

Eigen_PC

Benign

-0.97

FATHMM_MKL

Benign

0.099

LIST_S2

Benign

0.63

M_CAP

Benign

0.020

MetaRNN

Benign

0.0080

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.2

PrimateAI

Benign

0.19

PROVEAN

Uncertain

-3.6

REVEL

Benign

0.061

Sift

Benign

0.066

Sift4G

Uncertain

0.015

Polyphen

0.040

Vest4

0.16

MVP

0.53

MPC

0.46

ClinPred

0.049

GERP RS

2.2

RBP_binding_hub_radar

0.97

RBP_regulation_power_radar

2.1

Varity_R

0.067

gMVP

0.061

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