Variant chrX-18827401-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_001377996.1(PPEF1):c.1876A>G(p.Ile626Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000184 in 1,208,980 control chromosomes in the GnomAD database, including 2 homozygotes. There are 83 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., 3 hem., cov: 23)

Exomes 𝑓: 0.00019 ( 2 hom. 80 hem. )

Consequence

PPEF1
NM_001377996.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.79

Variant links:

Genes affected

PPEF1 (HGNC:9243): (protein phosphatase with EF-hand domain 1) This gene encodes a member of the serine/threonine protein phosphatase with EF-hand motif family. The protein contains a protein phosphatase catalytic domain, and at least two EF-hand calcium-binding motifs in its C terminus. Although its substrate(s) is unknown, the encoded protein has been suggested to play a role in specific sensory neuron function and/or development. This gene shares high sequence similarity with the Drosophila retinal degeneration C (rdgC) gene. Several alternatively spliced transcript variants, each encoding a distinct isoform, have been described. [provided by RefSeq, Jul 2008]

PPEF1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.022283405).

BS2

High Hemizygotes in GnomAd4 at 3 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PPEF1	NM_001377996.1 linkuse as main transcript	c.1876A>G	p.Ile626Val	missense_variant	16/16	ENST00000470157.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PPEF1	ENST00000470157.2 linkuse as main transcript	c.1876A>G	p.Ile626Val	missense_variant	16/16	3	NM_001377996.1	P1	O14829-1

Frequencies

GnomAD3 genomes

AF:

0.000107

AC:

AN:

112281

Hom.:

Cov.:

AF XY:

0.0000872

AC XY:

AN XY:

34417

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00333

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000180

AC:

AN:

183455

Hom.:

AF XY:

0.000147

AC XY:

AN XY:

67899

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00231

Gnomad SAS exome

AF:

0.0000524

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000191

AC:

210

AN:

1096646

Hom.:

Cov.:

AF XY:

0.000221

AC XY:

AN XY:

362056

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00682

Gnomad4 SAS exome

AF:

0.0000185

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000119

Gnomad4 OTH exome

AF:

0.0000434

GnomAD4 genome

AF:

0.000107

AC:

AN:

112334

Hom.:

Cov.:

AF XY:

0.0000870

AC XY:

AN XY:

34480

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00334

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000402

Hom.:

Bravo

AF:

0.0000680

ExAC

AF:

0.000214

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 29, 2024

The c.1876A>G (p.I626V) alteration is located in exon 19 (coding exon 16) of the PPEF1 gene. This alteration results from a A to G substitution at nucleotide position 1876, causing the isoleucine (I) at amino acid position 626 to be replaced by a valine (V). 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

0.14

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.29

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.20

T;.;T

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.84

T;D;T

M_CAP

Benign

0.075

MetaRNN

Benign

0.022

T;T;T

MetaSVM

Uncertain

-0.053

MutationAssessor

Uncertain

2.5

M;.;.

MutationTaster

Benign

1.0

D;D;D;D;N

PrimateAI

Benign

0.45

PROVEAN

Benign

-0.89

N;N;N

REVEL

Uncertain

0.41

Sift

Benign

0.17

T;T;T

Sift4G

Benign

0.19

T;T;D

Polyphen

1.0

D;D;.

Vest4

0.15

MVP

0.91

MPC

1.3

ClinPred

0.22

GERP RS

5.2

Varity_R

0.23

gMVP

0.81

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