rs201139850

Positions:

chr21-46391299-C-T

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS2

The ENST00000359568.10(PCNT):c.4139C>T(p.Ala1380Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000147 in 1,574,726 control chromosomes in the GnomAD database, including 3 homozygotes. 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). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A1380T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00078 ( 2 hom., cov: 33)

Exomes 𝑓: 0.000079 ( 1 hom. )

Consequence

PCNT
ENST00000359568.10 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: 0.480

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 Benign. Variant got -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0046239793).

BP6

Variant 21-46391299-C-T is Benign according to our data. Variant chr21-46391299-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 159595.We mark this variant Likely_benign, oryginal submissions are: {Benign=1, Uncertain_significance=1, Likely_benign=1}.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PCNT	NM_006031.6 linkuse as main transcript	c.4139C>T	p.Ala1380Val	missense_variant	21/47	ENST00000359568.10	NP_006022.3
PCNT	NM_001315529.2 linkuse as main transcript	c.3785C>T	p.Ala1262Val	missense_variant	21/47		NP_001302458.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PCNT	ENST00000359568.10 linkuse as main transcript	c.4139C>T	p.Ala1380Val	missense_variant	21/47	1	NM_006031.6	ENSP00000352572	P2	O95613-1
PCNT	ENST00000480896.5 linkuse as main transcript	c.3785C>T	p.Ala1262Val	missense_variant	21/47	1		ENSP00000511989	A2	O95613-2
PCNT	ENST00000695558.1 linkuse as main transcript	c.4139C>T	p.Ala1380Val	missense_variant	21/48			ENSP00000512015	A2
PCNT	ENST00000703224.1 linkuse as main transcript	c.*3382C>T		3_prime_UTR_variant, NMD_transcript_variant	23/49			ENSP00000515242

Frequencies

GnomAD3 genomes

AF:

0.000789

AC:

120

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00285

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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

GnomAD3 exomes

AF:

0.000228

AC:

AN:

180152

Hom.:

AF XY:

0.000197

AC XY:

AN XY:

96640

show subpopulations

Gnomad AFR exome

AF:

0.00298

Gnomad AMR exome

AF:

0.000150

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000290

Gnomad SAS exome

AF:

0.0000407

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000134

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000794

AC:

113

AN:

1422462

Hom.:

Cov.:

AF XY:

0.0000654

AC XY:

AN XY:

703806

show subpopulations

Gnomad4 AFR exome

AF:

0.00262

Gnomad4 AMR exome

AF:

0.000105

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000132

Gnomad4 SAS exome

AF:

0.0000123

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000733

Gnomad4 OTH exome

AF:

0.000153

GnomAD4 genome

AF:

0.000782

AC:

119

AN:

152264

Hom.:

Cov.:

AF XY:

0.000766

AC XY:

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.00282

Gnomad4 AMR

AF:

0.0000654

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

Alfa

AF:

0.000485

Hom.:

Bravo

AF:

0.000865

ESP6500AA

AF:

0.00275

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000227

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Microcephalic osteodysplastic primordial dwarfism type II

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Mar 18, 2014

- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Jul 20, 2017

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

PCNT-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 29, 2021

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

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 29, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.67

BayesDel_noAF

Benign

-0.74

CADD

Benign

3.8

DANN

Benign

0.94

DEOGEN2

Benign

0.12

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.11

LIST_S2

Benign

0.60

M_CAP

Benign

0.0066

MetaRNN

Benign

0.0046

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.7

MutationTaster

Benign

1.0

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.7

REVEL

Benign

0.022

Sift

Benign

0.20

Sift4G

Benign

0.12

Polyphen

0.14

Vest4

0.15

MVP

0.30

MPC

0.080

ClinPred

0.0067

GERP RS

0.93

Varity_R

0.033

gMVP

0.041

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