Variant 11-110580382-C-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001384657.1(ARHGAP20):c.2564G>T(p.Arg855Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000444 in 1,614,220 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R855H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00037 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00045 ( 1 hom. )

Consequence

ARHGAP20
NM_001384657.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0460

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 -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.015245646).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARHGAP20	NM_001384657.1 linkuse as main transcript	c.2564G>T	p.Arg855Leu	missense_variant	15/15	ENST00000683387.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARHGAP20	ENST00000683387.1 linkuse as main transcript	c.2564G>T	p.Arg855Leu	missense_variant	15/15		NM_001384657.1	P4	Q9P2F6-1

Frequencies

GnomAD3 genomes

AF:

0.000368

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000377

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000558

Gnomad OTH

AF:

0.00143

GnomAD3 exomes

AF:

0.000446

AC:

112

AN:

251248

Hom.:

AF XY:

0.000420

AC XY:

AN XY:

135776

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.000231

Gnomad ASJ exome

AF:

0.0000993

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000924

Gnomad NFE exome

AF:

0.000652

Gnomad OTH exome

AF:

0.000816

GnomAD4 exome

AF:

0.000451

AC:

660

AN:

1461892

Hom.:

Cov.:

AF XY:

0.000429

AC XY:

312

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000291

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.000955

Gnomad4 NFE exome

AF:

0.000500

Gnomad4 OTH exome

AF:

0.000563

GnomAD4 genome

AF:

0.000368

AC:

AN:

152328

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.000168

Gnomad4 AMR

AF:

0.000261

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000377

Gnomad4 NFE

AF:

0.000559

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000554

Hom.:

Bravo

AF:

0.000298

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.000909

AC:

ESP6500EA

AF:

0.000814

AC:

ExAC

AF:

0.000436

AC:

EpiCase

AF:

0.000491

EpiControl

AF:

0.00107

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 15, 2021

The c.2564G>T (p.R855L) alteration is located in exon 16 (coding exon 15) of the ARHGAP20 gene. This alteration results from a G to T substitution at nucleotide position 2564, causing the arginine (R) at amino acid position 855 to be replaced by a leucine (L). 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

0.12

BayesDel_addAF

Benign

-0.58

BayesDel_noAF

Benign

-0.71

Cadd

Benign

5.3

Dann

Benign

0.95

DEOGEN2

Benign

0.028

T;T;.;.;.;.

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.12

LIST_S2

Benign

0.84

T;T;T;.;T;T

M_CAP

Benign

0.0055

MetaRNN

Benign

0.015

T;T;T;T;T;T

MetaSVM

Benign

-0.91

MutationAssessor

Benign

0.0

N;.;.;.;.;.

MutationTaster

Benign

1.0

N;N;N;N;N;N;N

PrimateAI

Benign

0.20

PROVEAN

Benign

-0.59

N;N;N;N;N;N

REVEL

Benign

0.043

Sift

Benign

0.14

T;T;T;T;T;T

Sift4G

Benign

0.52

T;T;T;T;T;T

Polyphen

0.0010

B;.;B;.;B;.

Vest4

0.072

MVP

0.26

MPC

0.14

ClinPred

0.0035

GERP RS

1.2

Varity_R

0.055

gMVP

0.17

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