Genetic Variant PIP4P1:p.Leu252Leu (chr14-20458637-C-G) – ACMG Classification: Benign (-17 pts)

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_144568.4(PIP4P1):c.756G>C(p.Leu252Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000299 in 1,614,232 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00016 ( 2 hom. )

Consequence

PIP4P1
NM_144568.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.449

Variant links:

Genes affected

PIP4P1 (HGNC:19299): (phosphatidylinositol-4,5-bisphosphate 4-phosphatase 1) TMEM55B catalyzes the degradation of phosphatidylinositol 4,5-bisphosphate (PtdIns-4,5-P2) by removing the 4-phosphate (Ungewickell et al., 2005 [PubMed 16365287]).[supplied by OMIM, Mar 2008]

PIP4P1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.58).

BP6

Variant 14-20458637-C-G is Benign according to our data. Variant chr14-20458637-C-G is described in ClinVar as [Benign]. Clinvar id is 726812.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.449 with no splicing effect.

BS2

High Homozygotes in GnomAdExome4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PIP4P1	NM_144568.4 link	c.756G>C	p.Leu252Leu	synonymous_variant	Exon 7 of 7	ENST00000250489.9	NP_653169.2	Q86T03-1
PIP4P1	XM_024449739.2 link	c.671G>C	p.Cys224Ser	missense_variant	Exon 6 of 6		XP_024305507.1
PIP4P1	XM_024449740.2 link	c.650G>C	p.Cys217Ser	missense_variant	Exon 6 of 6		XP_024305508.1
PIP4P1	NM_001100814.3 link	c.777G>C	p.Leu259Leu	synonymous_variant	Exon 7 of 7		NP_001094284.1	Q86T03-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PIP4P1	ENST00000250489.9 link	c.756G>C	p.Leu252Leu	synonymous_variant	Exon 7 of 7	1	NM_144568.4	ENSP00000250489.4		Q86T03-1

Frequencies

GnomAD3 genomes

AF:

0.00164

AC:

250

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00562

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000850

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00191

GnomAD3 exomes

AF:

0.000379

AC:

AN:

250786

Hom.:

AF XY:

0.000177

AC XY:

AN XY:

135568

show subpopulations

Gnomad AFR exome

AF:

0.00548

Gnomad AMR exome

AF:

0.000116

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:

0.00

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000159

AC:

232

AN:

1461872

Hom.:

Cov.:

AF XY:

0.000138

AC XY:

100

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.00571

Gnomad4 AMR exome

AF:

0.000313

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.000331

GnomAD4 genome

AF:

0.00165

AC:

251

AN:

152360

Hom.:

Cov.:

AF XY:

0.00142

AC XY:

106

AN XY:

74498

show subpopulations

Gnomad4 AFR

AF:

0.00563

Gnomad4 AMR

AF:

0.000849

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00189

Alfa

AF:

0.000402

Hom.:

Bravo

AF:

0.00196

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Dec 26, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.58

CADD

Benign

6.4

DANN

Benign

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