Genetic Variant ARHGAP9:p.Gly393Arg (chr12-57476106-C-G) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_032496.4(ARHGAP9):c.1177G>C(p.Gly393Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000721 in 1,387,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G393S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

ARHGAP9
NM_032496.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.04

Publications

4 publications found

Variant links:

Genes affected

ARHGAP9 (HGNC:14130): (Rho GTPase activating protein 9) This gene encodes a member of the Rho-GAP family of GTPase activating proteins. The protein has substantial GAP activity towards several Rho-family GTPases in vitro, converting them to an inactive GDP-bound state. It is implicated in regulating adhesion of hematopoietic cells to the extracellular matrix. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ARHGAP9 links:

MARS1 (HGNC:6898): (methionyl-tRNA synthetase 1) This gene encodes a member of the class I family of aminoacyl-tRNA synthetases. These enzymes play a critical role in protein biosynthesis by charging tRNAs with their cognate amino acids. The encoded protein is a component of the multi-tRNA synthetase complex and catalyzes the ligation of methionine to tRNA molecules. [provided by RefSeq, Jan 2011]

MARS1 Gene-Disease associations (from GenCC):

Charcot-Marie-Tooth disease axonal type 2U
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
severe early-onset pulmonary alveolar proteinosis due to MARS deficiency
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
autosomal recessive spastic paraplegia type 70
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
Charcot-Marie-Tooth disease
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
spastic paraplegia 70, autosomal recessive
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
trichothiodystrophy 9, nonphotosensitive
Inheritance: Unknown, AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Illumina

MARS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.753

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ARHGAP9	NM_032496.4 link	c.1177G>C	p.Gly393Arg	missense_variant	Exon 9 of 18	ENST00000393791.8	NP_115885.2	Q9BRR9-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ARHGAP9	ENST00000393791.8 link	c.1177G>C	p.Gly393Arg	missense_variant	Exon 9 of 18	1	NM_032496.4	ENSP00000377380.3		Q9BRR9-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.21e-7

AC:

AN:

1387882

Hom.:

Cov.:

AF XY:

0.00000146

AC XY:

AN XY:

684160

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31432

American (AMR)

AF:

0.00

AC:

AN:

35136

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24862

East Asian (EAS)

AF:

0.00

AC:

AN:

35612

South Asian (SAS)

AF:

0.00

AC:

AN:

78726

European-Finnish (FIN)

AF:

0.00

AC:

AN:

42988

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5662

European-Non Finnish (NFE)

AF:

9.30e-7

AC:

AN:

1075800

Other (OTH)

AF:

0.00

AC:

AN:

57664

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.92

BayesDel_addAF

Uncertain

0.12

BayesDel_noAF

Uncertain

-0.060

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.35

.;.;.;T;.;T

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.61

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.91

D;D;D;.;D;D

M_CAP

Pathogenic

0.62

MetaRNN

Pathogenic

0.75

D;D;D;D;D;D

MetaSVM

Uncertain

-0.011

MutationAssessor

Benign

1.7

L;L;.;.;.;.

PhyloP100

3.0

PrimateAI

Uncertain

0.75

PROVEAN

Benign

-2.1

N;N;N;.;N;N

REVEL

Uncertain

0.47

Sift

Uncertain

0.0010

D;D;D;.;D;D

Sift4G

Uncertain

0.0030

D;D;D;D;D;.

Polyphen

1.0

D;.;.;.;.;.

Vest4

0.43

MutPred

0.47

Gain of MoRF binding (P = 0.0199);Gain of MoRF binding (P = 0.0199);.;.;.;.;

MVP

0.91

MPC

1.7

ClinPred

0.99

GERP RS

4.8

gMVP

0.68

Mutation Taster

=77/23

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

Computational scores

Splicing

Publications

Other links and lift over