6-129673510-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_033515.3(ARHGAP18):c.114-31492G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.294 in 151,984 control chromosomes in the GnomAD database, including 6,719 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.29 (6719 hom., cov: 32)
• Consequence: ARHGAP18 NM_033515.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.01

Genes affected

ARHGAP18 (HGNC:21035): (Rho GTPase activating protein 18) Enables GTPase activator activity. Involved in several processes, including regulation of actin filament polymerization; regulation of small GTPase mediated signal transduction; and small GTPase mediated signal transduction. Located in cytosol; nuclear speck; and plasma membrane. Part of cytoplasmic microtubule and ruffle. Implicated in schizophrenia. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.317 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARHGAP18	NM_033515.3	c.114-31492G>A		intron_variant		ENST00000368149.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARHGAP18	ENST00000368149.3	c.114-31492G>A		intron_variant		1	NM_033515.3	P1

Frequencies

GnomAD3 genomes AF: 0.294 AC: 44685 AN: 151866 Hom.: 6701 Cov.: 32

Gnomad AFR AF: 0.253

Gnomad AMI AF: 0.238

Gnomad AMR AF: 0.284

Gnomad ASJ AF: 0.331

Gnomad EAS AF: 0.222

Gnomad SAS AF: 0.255

Gnomad FIN AF: 0.341

Gnomad MID AF: 0.364

Gnomad NFE AF: 0.320

Gnomad OTH AF: 0.324

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

GnomAD4 genome AF: 0.294 AC: 44750 AN: 151984 Hom.: 6719 Cov.: 32 AF XY: 0.296 AC XY: 21953 AN XY: 74286

Gnomad4 AFR AF: 0.254

Gnomad4 AMR AF: 0.284

Gnomad4 ASJ AF: 0.331

Gnomad4 EAS AF: 0.222

Gnomad4 SAS AF: 0.255

Gnomad4 FIN AF: 0.341

Gnomad4 NFE AF: 0.320

Gnomad4 OTH AF: 0.325

Alfa AF: 0.289 Hom.: 3459

Bravo AF: 0.288

Asia WGS AF: 0.270 AC: 935 AN: 3472

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
Cadd	Benign	0.58
Dann	Benign	0.30

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: rs11154490; hg19: chr6-129994655;