Genetic Variant ACAP2:p.Gly266Ala (chr3-195320761-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_012287.6(ACAP2):c.797G>C(p.Gly266Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,240 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

ACAP2
NM_012287.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.57

Variant links:

Genes affected

ACAP2 (HGNC:16469): (ArfGAP with coiled-coil, ankyrin repeat and PH domains 2) Enables GTPase activator activity. Acts upstream of or within actin filament-based process. Located in ruffle. [provided by Alliance of Genome Resources, Apr 2022]

ACAP2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ACAP2	NM_012287.6 link	c.797G>C	p.Gly266Ala	missense_variant	Exon 10 of 23	ENST00000326793.11	NP_036419.3	Q15057

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
ACAP2	ENST00000326793.11 link	c.797G>C	p.Gly266Ala	missense_variant	Exon 10 of 23	1	NM_012287.6	ENSP00000324287.6	Q15057
ACAP2	ENST00000450200.2 link	c.797G>C	p.Gly266Ala	missense_variant	Exon 10 of 23	5		ENSP00000412338.2	H7C3K3
ACAP2	ENST00000635383.1 link	c.797G>C	p.Gly266Ala	missense_variant	Exon 10 of 18	5		ENSP00000489156.1	A0A0U1RQT1
ACAP2	ENST00000439758.3 link	c.419G>C	p.Gly140Ala	missense_variant	Exon 6 of 10	4		ENSP00000413388.1	H7C3Q8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251318

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135830

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1461240

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726960

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 17, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.797G>C (p.G266A) alteration is located in exon 10 (coding exon 10) of the ACAP2 gene. This alteration results from a G to C substitution at nucleotide position 797, causing the glycine (G) at amino acid position 266 to be replaced by an alanine (A). 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

Pathogenic

0.75

BayesDel_addAF

Uncertain

0.093

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.23

T;T;.

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.62

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.99

D;D;D

M_CAP

Benign

0.026

MetaRNN

Uncertain

0.59

D;D;D

MetaSVM

Benign

-0.49

MutationAssessor

Benign

1.5

L;.;.

PrimateAI

Pathogenic

0.89

PROVEAN

Uncertain

-3.0

D;.;.

REVEL

Uncertain

0.31

Sift

Benign

0.079

T;.;.

Sift4G

Benign

0.11

T;T;T

Polyphen

1.0

D;.;.

Vest4

0.76

MutPred

0.45

Loss of sheet (P = 0.1907);.;Loss of sheet (P = 0.1907);

MVP

0.69

MPC

1.3

ClinPred

0.95

GERP RS

5.9

Varity_R

0.36

gMVP

0.63

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