3-56729449-G-C

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_019555.3(ARHGEF3):c.1402C>G(p.Leu468Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000582 in 1,613,940 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 (★).

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000062 (0 hom.)
• Consequence: ARHGEF3 NM_019555.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.16

Genes affected

ARHGEF3 (HGNC:683): (Rho guanine nucleotide exchange factor 3) Rho-like GTPases are involved in a variety of cellular processes, and they are activated by binding GTP and inactivated by conversion of GTP to GDP by their intrinsic GTPase activity. Guanine nucleotide exchange factors (GEFs) accelerate the GTPase activity of Rho GTPases by catalyzing their release of bound GDP. This gene encodes a guanine nucleotide exchange factor, which specifically activates two members of the Rho GTPase family: RHOA and RHOB, both of which have a role in bone cell biology. It has been identified that genetic variation in this gene plays a role in the determination of bone mineral density (BMD), indicating the implication of this gene in postmenopausal osteoporosis. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.0475235).
• BS2: High AC in GnomAdExome at 13 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARHGEF3	NM_019555.3	c.1402C>G	p.Leu468Val	missense_variant	10/10	ENST00000296315.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARHGEF3	ENST00000296315.8	c.1402C>G	p.Leu468Val	missense_variant	10/10	1	NM_019555.3	P1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152048 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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: 0.0000441

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000517 AC: 13 AN: 251472 Hom.: 0 AF XY: 0.0000294 AC XY: 4 AN XY: 135906

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000231

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: 0.0000440

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000622 AC: 91 AN: 1461892 Hom.: 0 Cov.: 35 AF XY: 0.0000454 AC XY: 33 AN XY: 727246

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.000179

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: 0.0000683

Gnomad4 OTH exome AF: 0.0000993

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152048 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74276

Gnomad4 AFR AF: 0.00

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: 0.0000441

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000868 Hom.: 0

Bravo AF: 0.0000567

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.00 AC: 0

ESP6500AA AF: 0.00 AC: 0

ESP6500EA AF: 0.000116 AC: 1

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.000164

EpiControl AF: 0.000119

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 04, 2021

The c.1498C>G (p.L500V) alteration is located in exon 13 (coding exon 12) of the ARHGEF3 gene. This alteration results from a C to G substitution at nucleotide position 1498, causing the leucine (L) at amino acid position 500 to be replaced by a valine (V). 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	0.065
BayesDel_addAF	Benign	-0.52	T
BayesDel_noAF	Benign	-0.69
Cadd	Benign	15
Dann	Benign	0.77
DEOGEN2	Benign	0.0057	T;.;.;T;T
Eigen	Benign	-0.73
Eigen_PC	Benign	-0.67
FATHMM_MKL	Benign	0.61	D
LIST_S2	Benign	0.70	T;T;T;T;T
M_CAP	Benign	0.0055	T
MetaRNN	Benign	0.048	T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.90	L;.;.;.;.
MutationTaster	Benign	1.0	N;N;N;N;N
PrimateAI	Benign	0.29	T
PROVEAN	Benign	-0.29	N;N;N;N;N
REVEL	Benign	0.022
Sift	Benign	0.61	T;T;T;T;T
Sift4G	Benign	0.77	T;T;T;T;T
Polyphen		0.0010	B;B;B;B;B
Vest4		0.089
MVP		0.34
MPC		0.074
ClinPred		0.037	T
GERP RS		4.3
Varity_R		0.032
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

Other links and lift over

dbSNP: rs376626083; hg19: chr3-56763477;