chr16-29813689-A-G

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBP6

The NM_145239.3(PRRT2):c.635A>G(p.Asn212Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000023 in 1,042,514 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 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. N212T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000050 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

PRRT2
NM_145239.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 2.63

Publications

0 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 -3 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.1408185).

BP6

Variant 16-29813689-A-G is Benign according to our data. Variant chr16-29813689-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 404415.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRRT2	NM_145239.3 link	c.635A>G	p.Asn212Ser	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.635A>G	p.Asn212Ser	missense_variant	Exon 2 of 4	1	NM_145239.3	ENSP00000351608.7		Q7Z6L0-1
ENSG00000280893	ENST00000609618.2 link	n.635A>G		non_coding_transcript_exon_variant	Exon 2 of 6	5		ENSP00000476774.2		A0A0G2JLL6

Frequencies

GnomAD3 genomes

AF:

0.0000496

AC:

AN:

141248

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000260

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000936

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000134

AC:

AN:

223354

AF XY:

0.0000164

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000124

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000200

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000189

AC:

AN:

901120

Hom.:

Cov.:

AF XY:

0.0000175

AC XY:

AN XY:

457538

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

19972

American (AMR)

AF:

0.00

AC:

AN:

35158

Ashkenazi Jewish (ASJ)

AF:

0.0000676

AC:

AN:

14792

East Asian (EAS)

AF:

0.00

AC:

AN:

17702

South Asian (SAS)

AF:

0.0000134

AC:

AN:

74732

European-Finnish (FIN)

AF:

0.00

AC:

AN:

34018

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3920

European-Non Finnish (NFE)

AF:

0.0000225

AC:

AN:

666688

Other (OTH)

AF:

0.00

AC:

AN:

34138

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.528

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

AF:

0.0000495

AC:

AN:

141394

Hom.:

Cov.:

AF XY:

0.0000873

AC XY:

AN XY:

68708

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

39568

American (AMR)

AF:

0.00

AC:

AN:

14474

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3296

East Asian (EAS)

AF:

0.00

AC:

AN:

4044

South Asian (SAS)

AF:

0.000259

AC:

AN:

3856

European-Finnish (FIN)

AF:

0.00

AC:

AN:

8890

Middle Eastern (MID)

AF:

0.00

AC:

AN:

280

European-Non Finnish (NFE)

AF:

0.0000936

AC:

AN:

64120

Other (OTH)

AF:

0.00

AC:

AN:

2006

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.532

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000510

Hom.:

ExAC

AF:

0.0000166

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

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

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Uncertain:1

Dec 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

PRRT2: PM2 -

Episodic kinesigenic dyskinesia

Benign:1

Jan 20, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.44

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0056

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

Eigen

Benign

-0.11

Eigen_PC

Benign

-0.11

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.84

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

M_CAP

Benign

0.036

MetaRNN

Benign

0.14

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

MetaSVM

Benign

-0.84

MutationAssessor

Benign

0.90

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

PhyloP100

2.6

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-0.14

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

REVEL

Benign

0.13

Sift

Uncertain

0.0060

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

Sift4G

Benign

0.27

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

Polyphen

0.88

P;D;P;.;D;P;.;P;P

Vest4

0.39

MutPred

0.19

Gain of phosphorylation at N212 (P = 0.0041);Gain of phosphorylation at N212 (P = 0.0041);Gain of phosphorylation at N212 (P = 0.0041);Gain of phosphorylation at N212 (P = 0.0041);Gain of phosphorylation at N212 (P = 0.0041);Gain of phosphorylation at N212 (P = 0.0041);Gain of phosphorylation at N212 (P = 0.0041);Gain of phosphorylation at N212 (P = 0.0041);Gain of phosphorylation at N212 (P = 0.0041);

MVP

0.79

MPC

0.77

ClinPred

0.43

GERP RS

3.9

Varity_R

0.088

gMVP

0.18

Mutation Taster

=87/13

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over