chr16-29813827-G-A

Position:

chr16-29813827-G-A

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_145239.3(PRRT2):c.773G>A(p.Gly258Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000316 in 1,613,596 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00021 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00033 ( 5 hom. )

Consequence

PRRT2
NM_145239.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5O:1

Conservation

PhyloP100: 2.02

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:

ENSG00000280893 (HGNC:):

ENSG00000280893 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008788049).

BP6

Variant 16-29813827-G-A is Benign according to our data. Variant chr16-29813827-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 284592.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High AC in GnomAd4 at 32 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PRRT2	NM_145239.3 linkuse as main transcript	c.773G>A	p.Gly258Glu	missense_variant	2/4	ENST00000358758.12	NP_660282.2	Q7Z6L0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PRRT2	ENST00000358758.12 linkuse as main transcript	c.773G>A	p.Gly258Glu	missense_variant	2/4	1	NM_145239.3	ENSP00000351608.7		Q7Z6L0-1
ENSG00000280893	ENST00000609618.2 linkuse as main transcript	n.773G>A		non_coding_transcript_exon_variant	2/6	5		ENSP00000476774.2		A0A0G2JLL6

Frequencies

GnomAD3 genomes

AF:

0.000210

AC:

AN:

152132

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00539

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.000618

AC:

155

AN:

250756

Hom.:

AF XY:

0.000760

AC XY:

103

AN XY:

135578

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00441

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000150

Gnomad OTH exome

AF:

0.000328

GnomAD4 exome

AF:

0.000327

AC:

478

AN:

1461346

Hom.:

Cov.:

AF XY:

0.000431

AC XY:

313

AN XY:

726982

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00408

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.0000828

Gnomad4 OTH exome

AF:

0.000447

GnomAD4 genome

AF:

0.000210

AC:

AN:

152250

Hom.:

Cov.:

AF XY:

0.000322

AC XY:

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00539

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.0000757

Hom.:

Bravo

AF:

0.0000680

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.000560

AC:

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.000327

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Jan 06, 2021	This variant is associated with the following publications: (PMID: 24594579) -
Benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Sep 01, 2022	PRRT2: BS1, BS2 -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Nov 19, 2015

- -

Episodic kinesigenic dyskinesia

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 23, 2024

- -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 07, 2018

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Seizures, benign familial infantile, 2;C1865926:Infantile convulsions and choreoathetosis;C4552000:Episodic kinesigenic dyskinesia 1

Other:1

not provided, no classification provided

phenotyping only

GenomeConnect, ClinGen

Variant interpretted as Uncertain significance and reported on 05-24-2016 by Lab or GTR ID 506900. GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.21

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0070

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

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Benign

0.69

LIST_S2

Benign

0.62

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

M_CAP

Benign

0.029

MetaRNN

Benign

0.0088

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

MetaSVM

Benign

-0.49

MutationAssessor

Benign

0.69

N;N;N;N;N;N;N

PrimateAI

Uncertain

0.61

PROVEAN

Benign

0.71

N;.;N;N;.;.;.

REVEL

Benign

0.26

Sift

Uncertain

0.0050

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

Sift4G

Benign

0.25

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

Polyphen

1.0

D;D;D;D;D;D;D

Vest4

0.28

MVP

0.87

MPC

0.98

ClinPred

0.10

GERP RS

3.7

Varity_R

0.099

gMVP

0.63

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