rs11556732

Variant summary

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

The NM_145239.3(PRRT2):c.133C>T(p.Pro45Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000192 in 1,613,974 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 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 0.0011 ( 2 hom., cov: 31)

Exomes 𝑓: 0.000096 ( 0 hom. )

Consequence

PRRT2
NM_145239.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:5

Conservation

PhyloP100: 1.32

Variant links:

Genes affected

PRRT2 (HGNC:30500): (proline rich transmembrane protein 2) This gene encodes a transmembrane protein containing a proline-rich domain in its N-terminal half. Studies in mice suggest that it is predominantly expressed in brain and spinal cord in embryonic and postnatal stages. Mutations in this gene are associated with episodic kinesigenic dyskinesia-1. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2012]

PRRT2 links:

MVP-DT (HGNC:56029): (MVP divergent transcript)

MVP-DT 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=0.006657332).

BP6

Variant 16-29813187-C-T is Benign according to our data. Variant chr16-29813187-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 206678.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Uncertain_significance=1, Benign=1}.

BS2

High AC in GnomAd at 170 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PRRT2	NM_145239.3 linkuse as main transcript	c.133C>T	p.Pro45Ser	missense_variant	2/4	ENST00000358758.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRRT2	ENST00000358758.12 linkuse as main transcript	c.133C>T	p.Pro45Ser	missense_variant	2/4	1	NM_145239.3	P1	Q7Z6L0-1
MVP-DT	ENST00000569039.5 linkuse as main transcript	n.246-3014G>A		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes

AF:

0.00112

AC:

170

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00379

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000523

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:

0.0000147

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000311

AC:

AN:

250616

Hom.:

AF XY:

0.000236

AC XY:

AN XY:

135636

show subpopulations

Gnomad AFR exome

AF:

0.00372

Gnomad AMR exome

AF:

0.000434

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:

0.000491

GnomAD4 exome

AF:

0.0000958

AC:

140

AN:

1461696

Hom.:

Cov.:

AF XY:

0.0000784

AC XY:

AN XY:

727144

show subpopulations

Gnomad4 AFR exome

AF:

0.00284

Gnomad4 AMR exome

AF:

0.000425

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:

0.00

Gnomad4 OTH exome

AF:

0.000397

GnomAD4 genome

AF:

0.00112

AC:

170

AN:

152278

Hom.:

Cov.:

AF XY:

0.00109

AC XY:

AN XY:

74452

show subpopulations

Gnomad4 AFR

AF:

0.00378

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000468

Hom.:

Bravo

AF:

0.00140

ESP6500AA

AF:

0.00341

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000321

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:5

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 27, 2020	This variant is associated with the following publications: (PMID: 24594579) -
Likely benign, criteria provided, single submitter	clinical testing	Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics	Aug 15, 2017	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 13, 2018

The p.P45S variant (also known as c.133C>T), located in coding exon 1 of the PRRT2 gene, results from a C to T substitution at nucleotide position 133. The proline at codon 45 is replaced by serine, an amino acid with similar properties. This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Aug 11, 2016

- -

Episodic kinesigenic dyskinesia

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 24, 2024

- -

PRRT2-related disorder

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 23, 2019

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). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.089

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.23

Cadd

Benign

Dann

Uncertain

1.0

Eigen

Benign

0.043

Eigen_PC

Benign

-0.011

FATHMM_MKL

Benign

0.11

LIST_S2

Benign

0.71

T;T;.;.;T;T;T;T;T;.;T;.;T;T

M_CAP

Benign

0.052

MetaRNN

Benign

0.0067

T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.77

MutationTaster

Benign

0.92

N;N;N

PrimateAI

Benign

0.32

Polyphen

0.96, 0.99, 0.98

.;.;D;D;.;D;.;.;D;D;.;D;D;.

Vest4

0.22, 0.20, 0.18, 0.21

MVP

0.95

MPC

0.37

ClinPred

0.10

GERP RS

3.2

Varity_R

0.19

gMVP

0.11

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