Genetic Variant PPHLN1:p.Val149Ile (chr12-42375008-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_201439.2(PPHLN1):c.445G>A(p.Val149Ile) variant causes a missense change. The variant allele was found at a frequency of 0.0000041 in 1,461,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000041 ( 0 hom. )

Consequence

PPHLN1
NM_201439.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.51

Variant links:

Genes affected

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 made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28049994).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PPHLN1	NM_201439.2 link	c.445G>A	p.Val149Ile	missense_variant	Exon 5 of 10	ENST00000358314.12	NP_958847.1	Q8NEY8-8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PPHLN1	ENST00000358314.12 link	c.445G>A	p.Val149Ile	missense_variant	Exon 5 of 10	2	NM_201439.2	ENSP00000351066.7		Q8NEY8-8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251348

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135842

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000410

AC:

AN:

1461806

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727210

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 30, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.445G>A (p.V149I) alteration is located in exon 5 (coding exon 4) of the PPHLN1 gene. This alteration results from a G to A substitution at nucleotide position 445, causing the valine (V) at amino acid position 149 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Uncertain

0.064

BayesDel_noAF

Benign

-0.15

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.020

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

Eigen

Uncertain

0.40

Eigen_PC

Uncertain

0.53

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.88

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

M_CAP

Benign

0.0027

MetaRNN

Benign

0.28

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

MetaSVM

Benign

-0.62

MutationAssessor

Uncertain

2.7

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

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-0.28

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

REVEL

Benign

0.13

Sift

Benign

0.29

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

Sift4G

Benign

0.30

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

Polyphen

0.49

P;P;P;.;P;P;B;P;P;.;P;B;P;.;.

Vest4

0.34

MutPred

0.34

.;.;.;Gain of glycosylation at S148 (P = 0.0779);.;Gain of glycosylation at S148 (P = 0.0779);Gain of glycosylation at S148 (P = 0.0779);Gain of glycosylation at S148 (P = 0.0779);.;Gain of glycosylation at S148 (P = 0.0779);.;.;.;.;Gain of glycosylation at S148 (P = 0.0779);

MVP

0.64

MPC

0.31

ClinPred

0.52

GERP RS

6.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.078

gMVP

0.14

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

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