12-42459883-G-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_153026.3(PRICKLE1):c.2422C>A(p.Pro808Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,856 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P808L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

PRICKLE1
NM_153026.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.10

Publications

0 publications found

Variant links:

Genes affected

PRICKLE1 (HGNC:17019): (prickle planar cell polarity protein 1) This gene encodes a nuclear receptor that may be a negative regulator of the Wnt/beta-catenin signaling pathway. The encoded protein localizes to the nuclear membrane and has been implicated in the nuclear trafficking of the transcription repressors REST/NRSF and REST4. Mutations in this gene have been linked to progressive myoclonus epilepsy. Alternate splicing results in multiple transcript variants. A pseudogene of this gene is found on chromosome 3. [provided by RefSeq, Sep 2009]

PRICKLE1 links:

ENSG00000257225 (HGNC:):

ENSG00000257225 links:

PPHLN1 (HGNC:19369): (periphilin 1) The protein encoded by this gene is one of the several proteins that become sequentially incorporated into the cornified cell envelope during the terminal differentiation of keratinocyte at the outer layers of epidermis. This protein interacts with periplakin, which is known as a precursor of the cornified cell envelope. The cellular localization pattern and insolubility of this protein suggest that it may play a role in epithelial differentiation and contribute to epidermal integrity and barrier formation. Multiple alternatively spliced transcript variants encoding distinct isoforms have been observed. [provided by RefSeq, Jul 2008]

PPHLN1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07635921).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRICKLE1	NM_153026.3 link	c.2422C>A	p.Pro808Thr	missense_variant	Exon 8 of 8	ENST00000345127.9	NP_694571.2	Q96MT3A0A024R0W7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRICKLE1	ENST00000345127.9 link	c.2422C>A	p.Pro808Thr	missense_variant	Exon 8 of 8	1	NM_153026.3	ENSP00000345064.3		Q96MT3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000119

AC:

AN:

251444

AF XY:

0.0000147

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000867

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461856

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727230

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.0000671

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111978

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.542

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Epilepsy, progressive myoclonic, 1B

Uncertain:1

Aug 31, 2021

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces proline with threonine at codon 808 of the PRICKLE1 protein (p.Pro808Thr). The proline residue is moderately conserved and there is a small physicochemical difference between proline and threonine. This variant is present in population databases (rs780823369, ExAC 0.02%). This variant has not been reported in the literature in individuals affected with PRICKLE1-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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

0.056

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.49

CADD

Benign

(source)

DANN

Benign

0.80

DEOGEN2

Benign

0.047

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

Eigen

Benign

-0.44

Eigen_PC

Benign

-0.30

FATHMM_MKL

Uncertain

0.77

LIST_S2

Benign

0.79

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

M_CAP

Benign

0.0085

MetaRNN

Benign

0.076

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

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.1

L;L;L;L;L;L;L;L;L;L

PhyloP100

3.1

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.32

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

REVEL

Benign

0.14

Sift

Benign

0.10

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

Sift4G

Benign

0.37

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

Polyphen

0.0

B;B;B;B;B;B;B;B;B;B

Vest4

0.046

MutPred

0.11

Gain of glycosylation at P808 (P = 0.0173);Gain of glycosylation at P808 (P = 0.0173);Gain of glycosylation at P808 (P = 0.0173);Gain of glycosylation at P808 (P = 0.0173);Gain of glycosylation at P808 (P = 0.0173);Gain of glycosylation at P808 (P = 0.0173);Gain of glycosylation at P808 (P = 0.0173);Gain of glycosylation at P808 (P = 0.0173);Gain of glycosylation at P808 (P = 0.0173);Gain of glycosylation at P808 (P = 0.0173);

MVP

0.25

MPC

0.39

ClinPred

0.082

GERP RS

2.0

Varity_R

0.083

gMVP

0.26

Mutation Taster

=98/2

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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12-42459883-G-T

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