Genetic Variant ARHGAP20:p.Ala1169Val (chr11-110579440-G-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 2P and 6B. PM2BP4_StrongBP6_Moderate

The NM_001384657.1(ARHGAP20):c.3506C>T(p.Ala1169Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000118 in 1,613,832 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00013 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

ARHGAP20
NM_001384657.1 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -2.49

Variant links:

Genes affected

ARHGAP20 (HGNC:18357): (Rho GTPase activating protein 20) The protein encoded by this gene is an activator of RHO-type GTPases, transducing a signal from RAP1 to RHO and impacting neurite outgrowth. [provided by RefSeq, Sep 2016]

ARHGAP20 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.025213927).

BP6

Variant 11-110579440-G-A is Benign according to our data. Variant chr11-110579440-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 3421803.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARHGAP20	NM_001384657.1 link	c.3506C>T	p.Ala1169Val	missense_variant	Exon 15 of 15	ENST00000683387.1	NP_001371586.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARHGAP20	ENST00000683387.1 link	c.3506C>T	p.Ala1169Val	missense_variant	Exon 15 of 15		NM_001384657.1	ENSP00000507405.1		Q9P2F6-1

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152132

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000123

AC:

AN:

251092

Hom.:

AF XY:

0.000140

AC XY:

AN XY:

135690

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000347

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:

0.000159

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000117

AC:

171

AN:

1461582

Hom.:

Cov.:

AF XY:

0.000117

AC XY:

AN XY:

727028

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000313

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000374

Gnomad4 NFE exome

AF:

0.000130

Gnomad4 OTH exome

AF:

0.000166

GnomAD4 genome

AF:

0.000131

AC:

AN:

152250

Hom.:

Cov.:

AF XY:

0.000175

AC XY:

AN XY:

74432

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000943

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000152

Hom.:

Bravo

AF:

0.000174

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000988

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000178

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Oct 25, 2024

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.061

BayesDel_addAF

Benign

-0.69

BayesDel_noAF

Benign

-0.92

CADD

Benign

0.013

DANN

Benign

0.36

DEOGEN2

Benign

0.020

T;T;.;.;.;.

Eigen

Benign

-1.6

Eigen_PC

Benign

-1.7

FATHMM_MKL

Benign

0.0033

LIST_S2

Benign

0.22

T;T;T;.;T;T

M_CAP

Benign

0.0023

MetaRNN

Benign

0.025

T;T;T;T;T;T

MetaSVM

Benign

-0.97

MutationAssessor

Benign

-0.55

N;.;.;.;.;.

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.060

N;N;N;N;N;N

REVEL

Benign

0.0050

Sift

Benign

1.0

T;T;T;T;T;T

Sift4G

Benign

0.36

T;T;T;T;T;T

Polyphen

0.0010

B;.;B;.;B;.

Vest4

0.031

MVP

0.14

MPC

0.11

ClinPred

0.019

GERP RS

-7.0

Varity_R

0.023

gMVP

0.11

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