18-6886548-T-A

Variant names:

• chr18-6886548-T-A
• rs686428
• NM_001366230.1:c.1454-609T>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001366230.1(ARHGAP28):​c.1454-609T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000658 in 152,080 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.0000066 (0 hom., cov: 33)
• Consequence: ARHGAP28 NM_001366230.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.02
• Publications: 5 publications found

Genes affected

ARHGAP28 (HGNC:25509): (Rho GTPase activating protein 28) Predicted to enable GTPase activator activity. Predicted to be involved in negative regulation of GTP binding activity; regulation of actin filament organization; and regulation of small GTPase mediated signal transduction. Predicted to be located in cytosol. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.78).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001366230.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARHGAP28	NM_001366230.1	MANE Select	c.1454-609T>A		intron	N/A	NP_001353159.1	Q9P2N2-1
	ARHGAP28	NM_001366231.1		c.1454-609T>A		intron	N/A	NP_001353160.1
	ARHGAP28	NM_001410873.1		c.1298-609T>A		intron	N/A	NP_001397802.1	Q9P2N2-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARHGAP28	ENST00000383472.9	TSL:5 MANE Select	c.1454-609T>A		intron	N/A	ENSP00000372964.4	Q9P2N2-1
	ARHGAP28	ENST00000262227.7	TSL:1	c.1298-609T>A		intron	N/A	ENSP00000262227.3	Q9P2N2-2
	ARHGAP28	ENST00000419673.6	TSL:1	c.977-609T>A		intron	N/A	ENSP00000392660.2	Q9P2N2-5

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 152080 Hom.: 0 Cov.: 33

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: 0.0000147

Gnomad OTH AF: 0.00

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

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 152080 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74268

African (AFR) AF: 0.00 AC: 0 AN: 41402

American (AMR) AF: 0.00 AC: 0 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5178

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10580

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68018

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 204302

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	0.67
DANN	Benign	0.74
PhyloP100		-2.0

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.20		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.20		Position offset: 34

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs686428; hg19: chr18-6886547;