11-47166368-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_032389.6(ARFGAP2):c.1445A>T(p.Asn482Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,826 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ARFGAP2 NM_032389.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.11

Genes affected

ARFGAP2 (HGNC:13504): (ADP ribosylation factor GTPase activating protein 2) Predicted to enable GTPase activator activity. Predicted to be involved in COPI coating of Golgi vesicle. Located in Golgi apparatus; cytosol; and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARFGAP2	NM_032389.6	c.1445A>T	p.Asn482Ile	missense_variant	15/16	ENST00000524782.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARFGAP2	ENST00000524782.6	c.1445A>T	p.Asn482Ile	missense_variant	15/16	1	NM_032389.6	A1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251350 Hom.: 0 AF XY: 0.00000736 AC XY: 1 AN XY: 135846

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461826 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727218

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

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

Jul 20, 2021

The c.1445A>T (p.N482I) alteration is located in exon 15 (coding exon 15) of the ARFGAP2 gene. This alteration results from a A to T substitution at nucleotide position 1445, causing the asparagine (N) at amino acid position 482 to be replaced by an isoleucine (I). 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	Uncertain	0.54
BayesDel_addAF	Benign	-0.023	T
BayesDel_noAF	Benign	-0.27
Cadd	Benign	22
Dann	Uncertain	0.99
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.31
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Benign	0.023	T
MetaRNN	Uncertain	0.68	D;D;D
MetaSVM	Benign	-1.1	T
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.52	T
REVEL	Benign	0.17
Sift4G	Benign	0.079	T;T;T
Polyphen		0.98	.;.;D
Vest4		0.82
MutPred		0.48		.;.;Loss of catalytic residue at N482 (P = 0.0453);
MVP		0.34
MPC		0.49
ClinPred		0.98	D
GERP RS		4.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.52
gMVP		0.34

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: rs749706851; hg19: chr11-47187919;