Genetic Variant CAAP1:p.Glu83Asp (chr9-26892467-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_024828.4(CAAP1):c.249G>C(p.Glu83Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,222 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Consequence

CAAP1
NM_024828.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.81

Publications

0 publications found

Variant links:

Genes affected

CAAP1 (HGNC:25834): (caspase activity and apoptosis inhibitor 1) Involved in negative regulation of cysteine-type endopeptidase activity involved in apoptotic signaling pathway. [provided by Alliance of Genome Resources, Apr 2022]

CAAP1 links:

ENSG00000295750 (HGNC:):

ENSG00000295750 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.1418567).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CAAP1	NM_024828.4 link	c.249G>C	p.Glu83Asp	missense_variant	Exon 1 of 6	ENST00000333916.8	NP_079104.3	Q9H8G2-1
CAAP1	XM_047423896.1 link	c.249G>C	p.Glu83Asp	missense_variant	Exon 1 of 6		XP_047279852.1
CAAP1	NM_001167575.2 link	c.-341G>C		5_prime_UTR_variant	Exon 1 of 6		NP_001161047.1	Q9H8G2-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CAAP1	ENST00000333916.8 link	c.249G>C	p.Glu83Asp	missense_variant	Exon 1 of 6	1	NM_024828.4	ENSP00000369431.3		Q9H8G2-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152222

Hom.:

Cov.:

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152222

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74374

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

41456

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4834

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10632

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68036

Other (OTH)

AF:

0.00

AC:

AN:

2094

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.325

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 08, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.249G>C (p.E83D) alteration is located in exon 1 (coding exon 1) of the CAAP1 gene. This alteration results from a G to C substitution at nucleotide position 249, causing the glutamic acid (E) at amino acid position 83 to be replaced by an aspartic acid (D). 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

0.094

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.46

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.010

T;.

Eigen

Benign

-0.50

Eigen_PC

Benign

-0.43

FATHMM_MKL

Benign

0.35

LIST_S2

Benign

0.61

T;T

M_CAP

Benign

0.0074

MetaRNN

Benign

0.14

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.90

L;.

PhyloP100

1.8

PrimateAI

Pathogenic

0.80

PROVEAN

Benign

-1.0

N;D

REVEL

Benign

0.038

Sift

Benign

0.033

D;D

Sift4G

Benign

0.60

T;T

Polyphen

0.37

B;.

Vest4

0.40

MutPred

0.11

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

MVP

0.15

MPC

0.12

ClinPred

0.50

GERP RS

1.1

PromoterAI

0.080

Neutral

(source)

Varity_R

0.17

gMVP

0.12

Mutation Taster

=95/5

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over