Genetic Variant PRICKLE1:p.Arg144Pro (chr12-42468783-C-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_153026.3(PRICKLE1):c.431G>C(p.Arg144Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R144C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

PRICKLE1
NM_153026.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.57

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 Gene-Disease associations (from GenCC):

epilepsy, progressive myoclonic, 1B
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
Unverricht-Lundborg syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
progressive myoclonus epilepsy
Inheritance: AR Classification: LIMITED Submitted by: ClinGen
epilepsy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

PRICKLE1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.935

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRICKLE1	NM_153026.3 link	c.431G>C	p.Arg144Pro	missense_variant	Exon 5 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.431G>C	p.Arg144Pro	missense_variant	Exon 5 of 8	1	NM_153026.3	ENSP00000345064.3		Q96MT3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

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:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1112008

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.46

BayesDel_noAF

Pathogenic

0.42

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.78

D;D;D;D;D;D;D;D;D;D;T

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.95

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.91

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

M_CAP

Pathogenic

0.43

MetaRNN

Pathogenic

0.94

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

MetaSVM

Pathogenic

1.0

MutationAssessor

Pathogenic

3.0

M;M;M;M;M;M;M;M;M;M;.

PhyloP100

7.6

PrimateAI

Uncertain

0.72

PROVEAN

Pathogenic

-6.6

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

REVEL

Pathogenic

0.91

Sift

Pathogenic

0.0

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

Sift4G

Pathogenic

0.0

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

Polyphen

1.0

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

Vest4

0.98

MutPred

0.78

Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);Loss of methylation at R144 (P = 0.0325);

MVP

0.98

MPC

1.4

ClinPred

1.0

GERP RS

5.6

Varity_R

0.94

gMVP

0.91

Mutation Taster

=28/72

disease causing

(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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12-42468783-C-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over