Genetic Variant CPPED1:p.Ile236Phe (chr16-12704633-T-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_018340.3(CPPED1):c.706A>T(p.Ile236Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000343 in 1,457,066 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

CPPED1
NM_018340.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0560

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.03921634).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CPPED1	NM_018340.3 link	c.706A>T	p.Ile236Phe	missense_variant	Exon 3 of 4	ENST00000381774.9	NP_060810.2	Q9BRF8-1
CPPED1	NM_001099455.2 link	c.290-39518A>T		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.706A>T	p.Ile236Phe	missense_variant	Exon 3 of 4	1	NM_018340.3	ENSP00000371193.4	Q9BRF8-1
CPPED1	ENST00000433677.6 link	c.290-39518A>T		intron_variant	Intron 2 of 2	1		ENSP00000411127.2	Q9BRF8-2
CPPED1	ENST00000261660.4 link	c.290-39613A>T		intron_variant	Intron 2 of 2	2		ENSP00000261660.4	Q9BRF8-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000323

AC:

AN:

247636

Hom.:

AF XY:

0.0000372

AC XY:

AN XY:

134252

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000445

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000343

AC:

AN:

1457066

Hom.:

Cov.:

AF XY:

0.00000414

AC XY:

AN XY:

723958

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000126

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000453

ExAC

AF:

0.0000248

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 07, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.706A>T (p.I236F) alteration is located in exon 3 (coding exon 3) of the CPPED1 gene. This alteration results from a A to T substitution at nucleotide position 706, causing the isoleucine (I) at amino acid position 236 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

Benign

0.11

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.49

CADD

Benign

2.0

DANN

Benign

0.30

DEOGEN2

Benign

0.080

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.11

LIST_S2

Benign

0.80

M_CAP

Benign

0.027

MetaRNN

Benign

0.039

MetaSVM

Benign

-0.81

MutationAssessor

Benign

0.34

PrimateAI

Benign

0.26

PROVEAN

Benign

-0.070

REVEL

Benign

0.14

Sift

Benign

0.70

Sift4G

Benign

0.70

Polyphen

0.0

Vest4

0.17

MutPred

0.35

Loss of methylation at K234 (P = 0.0923);

MVP

0.27

MPC

0.082

ClinPred

0.015

GERP RS

-2.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.071

gMVP

0.32

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