Genetic Variant PLPP4:p.Leu179Phe (chr10-120575220-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001030059.3(PLPP4):c.535C>T(p.Leu179Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000753 in 1,461,778 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

PLPP4
NM_001030059.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.84

Variant links:

Genes affected

PLPP4 (HGNC:23531): (phospholipid phosphatase 4) Enables diacylglycerol diphosphate phosphatase activity; identical protein binding activity; and phosphatidate phosphatase activity. Involved in phospholipid dephosphorylation and regulation of calcium ion import. Predicted to be located in plasma membrane. Biomarker of breast cancer. [provided by Alliance of Genome Resources, Apr 2022]

PLPP4 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLPP4	NM_001030059.3 link	c.535C>T	p.Leu179Phe	missense_variant	Exon 6 of 7	ENST00000398250.6	NP_001025230.1	Q5VZY2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PLPP4	ENST00000398250.6 link	c.535C>T	p.Leu179Phe	missense_variant	Exon 6 of 7	1	NM_001030059.3	ENSP00000381302.1	Q5VZY2-1
PLPP4	ENST00000369073.3 link	n.505C>T		non_coding_transcript_exon_variant	Exon 6 of 7	5
PLPP4	ENST00000496437.1 link	n.33C>T		non_coding_transcript_exon_variant	Exon 1 of 2	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000802

AC:

AN:

249436

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

135314

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:

0.0000177

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461778

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727200

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:

0.00000899

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000248

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 03, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.535C>T (p.L179F) alteration is located in exon 6 (coding exon 6) of the PLPP4 gene. This alteration results from a C to T substitution at nucleotide position 535, causing the leucine (L) at amino acid position 179 to be replaced by a phenylalanine (F). 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

Uncertain

0.35

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Uncertain

0.030

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.69

D;.;.

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.82

T;T;T

M_CAP

Benign

0.052

MetaRNN

Uncertain

0.61

D;D;D

MetaSVM

Uncertain

0.074

PrimateAI

Uncertain

0.71

PROVEAN

Benign

-2.1

N;N;N

REVEL

Uncertain

0.55

Sift

Benign

0.14

T;T;T

Sift4G

Benign

0.084

T;T;T

Polyphen

0.055

B;.;.

Vest4

0.90

MutPred

0.67

Loss of helix (P = 0.028);Loss of helix (P = 0.028);.;

MVP

0.88

MPC

0.89

ClinPred

0.72

GERP RS

4.8

Varity_R

0.25

gMVP

0.76

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