chr16-29813068-G-C

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_145239.3(PRRT2):c.14G>C(p.Ser5Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000213 in 1,453,658 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. S5S) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

PRRT2
NM_145239.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.369

Publications

1 publications found

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:

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

MVP-DT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.052841842).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRRT2	NM_145239.3 link	c.14G>C	p.Ser5Thr	missense_variant	Exon 2 of 4	ENST00000358758.12	NP_660282.2	Q7Z6L0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRRT2	ENST00000358758.12 link	c.14G>C	p.Ser5Thr	missense_variant	Exon 2 of 4	1	NM_145239.3	ENSP00000351608.7		Q7Z6L0-1
ENSG00000280893	ENST00000609618.2 link	n.14G>C		non_coding_transcript_exon_variant	Exon 2 of 6	5		ENSP00000476774.2		A0A0G2JLL6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000123

AC:

AN:

243874

AF XY:

0.00000757

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000605

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000906

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000213

AC:

AN:

1453658

Hom.:

Cov.:

AF XY:

0.0000249

AC XY:

AN XY:

723024

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33076

American (AMR)

AF:

0.0000464

AC:

AN:

43090

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25366

East Asian (EAS)

AF:

0.00

AC:

AN:

39640

South Asian (SAS)

AF:

0.00

AC:

AN:

85368

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53124

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5718

European-Non Finnish (NFE)

AF:

0.0000262

AC:

AN:

1108318

Other (OTH)

AF:

0.00

AC:

AN:

59958

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.459

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000285

Hom.:

Bravo

AF:

0.00000378

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Episodic kinesigenic dyskinesia

Uncertain:1

Sep 14, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is present in population databases (rs745742339, gnomAD 0.006%). This sequence change replaces serine, which is neutral and polar, with threonine, which is neutral and polar, at codon 5 of the PRRT2 protein (p.Ser5Thr). This variant has not been reported in the literature in individuals affected with PRRT2-related conditions. ClinVar contains an entry for this variant (Variation ID: 206682). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt PRRT2 protein function. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.070

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Benign

0.89

DEOGEN2

Benign

0.0089

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

Eigen

Benign

-0.82

Eigen_PC

Benign

-0.76

FATHMM_MKL

Benign

0.26

LIST_S2

Benign

0.63

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

M_CAP

Benign

0.014

MetaRNN

Benign

0.053

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

MetaSVM

Benign

-0.93

MutationAssessor

Benign

1.7

.;.;L;L;.;L;.;.;L;L;.;L;L;.

PhyloP100

0.37

PrimateAI

Benign

0.34

PROVEAN

Uncertain

-2.9

.;D;N;.;.;N;.;.;N;.;.;.;.;.

REVEL

Benign

0.12

Sift

Benign

0.12

.;T;D;.;.;D;.;.;T;.;.;.;.;.

Sift4G

Pathogenic

0.0

.;D;T;.;.;T;.;.;T;.;.;T;.;.

Polyphen

0.0030, 0.0090, 0.0050

.;.;B;B;.;B;.;.;B;B;.;B;B;.

Vest4

0.12, 0.11, 0.10, 0.12

MutPred

0.13

Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);Loss of phosphorylation at I5 (P = 0.0665);

MVP

0.67

MPC

0.23

ClinPred

0.026

GERP RS

0.95

Varity_R

0.12

gMVP

0.062

Mutation Taster

=92/8

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over