rs9287439

Positions:

• chr2-135112191-C-T

Variant summary

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

The NM_012233.3(RAB3GAP1):​c.363-960C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.108 in 152,118 control chromosomes in the GnomAD database, including 2,182 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 0.11 (2182 hom., cov: 32)
• Consequence: RAB3GAP1 NM_012233.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.212

Genes affected

RAB3GAP1 (HGNC:17063): (RAB3 GTPase activating protein catalytic subunit 1) This gene encodes the catalytic subunit of a Rab GTPase activating protein. The encoded protein forms a heterodimer with a non-catalytic subunit to specifically regulate the activity of members of the Rab3 subfamily of small G proteins. This protein mediates the hydrolysis of GTP bound Rab3 to the GDP bound form. Mutations in this gene are associated with Warburg micro syndrome. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Feb 2010]

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 (AFR) allele frequency at 95% confidence interval = 0.313 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAB3GAP1	NM_012233.3	c.363-960C>T		intron_variant		ENST00000264158.13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAB3GAP1	ENST00000264158.13	c.363-960C>T		intron_variant		1	NM_012233.3	A1

Frequencies

GnomAD3 genomes AF: 0.107 AC: 16325 AN: 152000 Hom.: 2177 Cov.: 32

Gnomad AFR AF: 0.317

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0606

Gnomad ASJ AF: 0.0648

Gnomad EAS AF: 0.0557

Gnomad SAS AF: 0.0110

Gnomad FIN AF: 0.0129

Gnomad MID AF: 0.0222

Gnomad NFE AF: 0.0205

Gnomad OTH AF: 0.0885

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

GnomAD4 genome AF: 0.108 AC: 16367 AN: 152118 Hom.: 2182 Cov.: 32 AF XY: 0.105 AC XY: 7835 AN XY: 74370

Gnomad4 AFR AF: 0.317

Gnomad4 AMR AF: 0.0607

Gnomad4 ASJ AF: 0.0648

Gnomad4 EAS AF: 0.0558

Gnomad4 SAS AF: 0.0110

Gnomad4 FIN AF: 0.0129

Gnomad4 NFE AF: 0.0205

Gnomad4 OTH AF: 0.0885

Alfa AF: 0.0400 Hom.: 442

Bravo AF: 0.121

Asia WGS AF: 0.0420 AC: 148 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	5.5
DANN	Benign	0.82

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: rs9287439; hg19: chr2-135869761;