Genetic Variant CPPED1:p.Cys174Tyr (chr16-12704818-C-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_018340.3(CPPED1):c.521G>A(p.Cys174Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.000105 in 1,614,074 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000099 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

CPPED1
NM_018340.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.87

Variant links:

Genes affected

CPPED1 (HGNC:25632): (calcineurin like phosphoesterase domain containing 1) Predicted to enable metal ion binding activity; protein serine phosphatase activity; and protein threonine phosphatase activity. Predicted to be involved in protein dephosphorylation. Located in cytosol and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

CPPED1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.775

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CPPED1	NM_018340.3 link	c.521G>A	p.Cys174Tyr	missense_variant	Exon 3 of 4	ENST00000381774.9	NP_060810.2	Q9BRF8-1
CPPED1	NM_001099455.2 link	c.290-39703G>A		intron_variant	Intron 2 of 2		NP_001092925.1	Q9BRF8-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CPPED1	ENST00000381774.9 link	c.521G>A	p.Cys174Tyr	missense_variant	Exon 3 of 4	1	NM_018340.3	ENSP00000371193.4	Q9BRF8-1
CPPED1	ENST00000433677.6 link	c.290-39703G>A		intron_variant	Intron 2 of 2	1		ENSP00000411127.2	Q9BRF8-2
CPPED1	ENST00000261660.4 link	c.290-39798G>A		intron_variant	Intron 2 of 2	2		ENSP00000261660.4	Q9BRF8-3

Frequencies

GnomAD3 genomes

AF:

0.0000986

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.000206

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000923

AC:

AN:

249302

Hom.:

AF XY:

0.0000665

AC XY:

AN XY:

135300

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000261

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:

0.000124

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000106

AC:

155

AN:

1461890

Hom.:

Cov.:

AF XY:

0.0000853

AC XY:

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000201

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:

0.000125

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.0000986

AC:

AN:

152184

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74328

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000141

Hom.:

Bravo

AF:

0.000132

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000238

AC:

ExAC

AF:

0.0000827

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 07, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.521G>A (p.C174Y) alteration is located in exon 3 (coding exon 3) of the CPPED1 gene. This alteration results from a G to A substitution at nucleotide position 521, causing the cysteine (C) at amino acid position 174 to be replaced by a tyrosine (Y). 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

0.44

BayesDel_addAF

Pathogenic

0.18

BayesDel_noAF

Pathogenic

0.31

CADD

Uncertain

DANN

Benign

0.95

DEOGEN2

Benign

0.26

Eigen

Uncertain

0.30

Eigen_PC

Benign

0.22

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.75

M_CAP

Benign

0.074

MetaRNN

Pathogenic

0.77

MetaSVM

Uncertain

0.36

MutationAssessor

Uncertain

2.7

PrimateAI

Uncertain

0.65

PROVEAN

Pathogenic

-5.8

REVEL

Pathogenic

0.71

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.0020

Polyphen

0.99

Vest4

0.57

MVP

0.56

MPC

0.37

ClinPred

0.94

GERP RS

4.4

Varity_R

0.73

gMVP

0.45

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