3-119295288-G-C

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_020754.4(ARHGAP31):c.100+284G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0127 in 152,040 control chromosomes in the GnomAD database, including 32 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency: Genomes: 𝑓 0.013 (32 hom., cov: 28)
• Consequence: ARHGAP31 NM_020754.4 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.29

Genes affected

ARHGAP31 (HGNC:29216): (Rho GTPase activating protein 31) This gene encodes a GTPase-activating protein (GAP). A variety of cellular processes are regulated by Rho GTPases which cycle between an inactive form bound to GDP and an active form bound to GTP. This cycling between inactive and active forms is regulated by guanine nucleotide exchange factors and GAPs. The encoded protein is a GAP shown to regulate two GTPases involved in protein trafficking and cell growth. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP6: Variant 3-119295288-G-C is Benign according to our data. Variant chr3-119295288-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 1190648.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0127 (1938/152040) while in subpopulation AFR AF= 0.0432 (1790/41444). AF 95% confidence interval is 0.0415. There are 32 homozygotes in gnomad4. There are 899 alleles in male gnomad4 subpopulation. Median coverage is 28. This position pass quality control queck.
• BS2: High AC in GnomAd at 1933 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARHGAP31	NM_020754.4	c.100+284G>C		intron_variant		ENST00000264245.9
ARHGAP31	XM_006713714.4	c.100+284G>C		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARHGAP31	ENST00000264245.9	c.100+284G>C		intron_variant		1	NM_020754.4	P1

Frequencies

GnomAD3 genomes AF: 0.0127 AC: 1933 AN: 151922 Hom.: 32 Cov.: 28

Gnomad AFR AF: 0.0432

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00538

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000416

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000515

Gnomad OTH AF: 0.0139

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0127 AC: 1938 AN: 152040 Hom.: 32 Cov.: 28 AF XY: 0.0121 AC XY: 899 AN XY: 74320

Gnomad4 AFR AF: 0.0432

Gnomad4 AMR AF: 0.00537

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000416

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000515

Gnomad4 OTH AF: 0.0138

Alfa AF: 0.00134 Hom.: 1

Bravo AF: 0.0140

Asia WGS AF: 0.000577 AC: 2 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Aug 18, 2019

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
Cadd	Benign	6.2
Dann	Benign	0.51

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs78184961; hg19: chr3-119014135;