chr22-44802085-C-G

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_181335.3(ARHGAP8):c.88C>G(p.Arg30Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000105 in 1,614,016 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

ARHGAP8
NM_181335.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.58

Variant links:

Genes affected

ARHGAP8 (HGNC:677): (Rho GTPase activating protein 8) This gene encodes a member of the RHOGAP family. GAP (GTPase-activating) family proteins participate in signaling pathways that regulate cell processes involved in cytoskeletal changes. GAP proteins alternate between an active (GTP-bound) and inactive (GDP-bound) state based on the GTP:GDP ratio in the cell. This family member is a multidomain protein that functions to promote Erk activation and cell motility. Alternative splicing results in multiple transcript variants. Read-through transcripts from the upstream proline rich 5, renal (PRR5) gene into this gene also exist, which led to the original description of PRR5 and ARHGAP8 being a single gene. [provided by RefSeq, Nov 2010]

ARHGAP8 links:

PRR5-ARHGAP8 (HGNC:34512): (PRR5-ARHGAP8 readthrough) The PRR5-ARHGAP8 mRNA is an infrequent but naturally occurring read-through transcript of the neighboring proline rich 5, renal (PRR5) and Rho GTPase activating protein 8 (ARHGAP8) genes. The resulting fusion protein contains sequence identity with each individual gene product, and it includes domains characteristic of a RhoGAP protein. The significance of this read-through transcript and the function of its protein product have not yet been determined. [provided by RefSeq, Nov 2010]

PRR5-ARHGAP8 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.10196161).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARHGAP8	NM_181335.3 link	c.88C>G	p.Arg30Gly	missense_variant	Exon 3 of 12	ENST00000356099.11	NP_851852.2	P85298-4Q6PJW1
PRR5-ARHGAP8	NM_181334.6 link	c.481C>G	p.Arg161Gly	missense_variant	Exon 6 of 15		NP_851851.3	B1AHC3
ARHGAP8	NM_001017526.2 link	c.88C>G	p.Arg30Gly	missense_variant	Exon 3 of 13		NP_001017526.1	P85298-1Q6PJW1
ARHGAP8	NM_001198726.2 link	c.88C>G	p.Arg30Gly	missense_variant	Exon 3 of 11		NP_001185655.1	P85298-5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARHGAP8	ENST00000356099.11 link	c.88C>G	p.Arg30Gly	missense_variant	Exon 3 of 12	1	NM_181335.3	ENSP00000348407.6		P85298-4
PRR5-ARHGAP8	ENST00000352766.11 link	c.850C>G	p.Arg284Gly	missense_variant	Exon 9 of 17	2		ENSP00000262731.11		B1AHC4

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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

GnomAD3 exomes

AF:

0.00000402

AC:

AN:

248970

Hom.:

AF XY:

0.00000742

AC XY:

AN XY:

134764

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:

0.00000898

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1461804

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727214

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000135

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152212

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74354

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 08, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.88C>G (p.R30G) alteration is located in exon 3 (coding exon 2) of the ARHGAP8 gene. This alteration results from a C to G substitution at nucleotide position 88, causing the arginine (R) at amino acid position 30 to be replaced by a glycine (G). 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

0.096

BayesDel_addAF

Benign

-0.0056

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Benign

0.74

DEOGEN2

Benign

0.13

.;.;T;T;.;.;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.37

LIST_S2

Benign

0.85

D;D;D;T;T;T;D

M_CAP

Benign

0.030

MetaRNN

Benign

0.10

T;T;T;T;T;T;T

MetaSVM

Benign

-0.93

MutationAssessor

Uncertain

2.1

.;.;M;.;M;M;.

PrimateAI

Benign

0.31

PROVEAN

Uncertain

-2.7

D;N;D;D;D;D;D

REVEL

Benign

0.22

Sift

Benign

0.10

T;T;D;T;T;T;D

Sift4G

Benign

0.33

T;T;T;T;T;T;T

Polyphen

0.64

P;B;P;.;.;.;.

Vest4

0.34

MutPred

0.40

.;Loss of MoRF binding (P = 0.0294);.;.;.;.;.;

MVP

0.37

ClinPred

0.25

GERP RS

-2.0

Varity_R

0.12

gMVP

0.24

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