2-108753428-A-G

Position:

• chr2-108753428-A-G

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 0P and 15B. BP4_Moderate BP6_Very_Strong BP7 BS2

The NM_006267.5(RANBP2):​c.1920A>G​(p.Ala640=) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00105 in 1,611,734 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00083 (0 hom., cov: 31)
  • Exomes 𝑓: 0.0011 (1 hom.)
• Consequence: RANBP2 NM_006267.5 splice_region, synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -0.343

Genes affected

RANBP2 (HGNC:9848): (RAN binding protein 2) RAN is a small GTP-binding protein of the RAS superfamily that is associated with the nuclear membrane and is thought to control a variety of cellular functions through its interactions with other proteins. This gene encodes a very large RAN-binding protein that immunolocalizes to the nuclear pore complex. The protein is a giant scaffold and mosaic cyclophilin-related nucleoporin implicated in the Ran-GTPase cycle. The encoded protein directly interacts with the E2 enzyme UBC9 and strongly enhances SUMO1 transfer from UBC9 to the SUMO1 target SP100. These findings place sumoylation at the cytoplasmic filaments of the nuclear pore complex and suggest that, for some substrates, modification and nuclear import are linked events. This gene is partially duplicated in a gene cluster that lies in a hot spot for recombination on chromosome 2q. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -15 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.44).
• BP6: Variant 2-108753428-A-G is Benign according to our data. Variant chr2-108753428-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 469432.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-108753428-A-G is described in Lovd as [Likely_benign].
• BP7: Synonymous conserved (PhyloP=-0.343 with no splicing effect.
• BS2: High AC in GnomAd4 at 127 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RANBP2	NM_006267.5	c.1920A>G	p.Ala640=	splice_region_variant, synonymous_variant	14/29	ENST00000283195.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RANBP2	ENST00000283195.11	c.1920A>G	p.Ala640=	splice_region_variant, synonymous_variant	14/29	1	NM_006267.5	P1
RANBP2	ENST00000697737.1	c.1920A>G	p.Ala640=	splice_region_variant, synonymous_variant	14/27
RANBP2	ENST00000697740.1	c.1842A>G	p.Ala614=	splice_region_variant, synonymous_variant	14/27

Frequencies

GnomAD3 genomes AF: 0.000834 AC: 127 AN: 152214 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.000169

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000327

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00311

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00119

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.00103 AC: 231 AN: 225206 Hom.: 0 AF XY: 0.000991 AC XY: 122 AN XY: 123062

Gnomad AFR exome AF: 0.000285

Gnomad AMR exome AF: 0.000306

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000380

Gnomad FIN exome AF: 0.00336

Gnomad NFE exome AF: 0.00136

Gnomad OTH exome AF: 0.00113

GnomAD4 exome AF: 0.00107 AC: 1568 AN: 1459402 Hom.: 1 Cov.: 34 AF XY: 0.00109 AC XY: 790 AN XY: 726018

Gnomad4 AFR exome AF: 0.000240

Gnomad4 AMR exome AF: 0.000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000580

Gnomad4 FIN exome AF: 0.00376

Gnomad4 NFE exome AF: 0.00116

Gnomad4 OTH exome AF: 0.000847

GnomAD4 genome AF: 0.000834 AC: 127 AN: 152332 Hom.: 0 Cov.: 31 AF XY: 0.000873 AC XY: 65 AN XY: 74488

Gnomad4 AFR AF: 0.000168

Gnomad4 AMR AF: 0.000327

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00311

Gnomad4 NFE AF: 0.00119

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000800 Hom.: 0

Bravo AF: 0.000778

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Likely benign, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Nov 01, 2022	RANBP2: BP4, BP7 -
Likely benign, no assertion criteria provided	clinical testing	Genome Diagnostics Laboratory, University Medical Center Utrecht	-	- -

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Feb 05, 2018

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Familial acute necrotizing encephalopathy Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 01, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.44
CADD	Benign	6.4
DANN	Benign	0.76

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: rs147080366; hg19: chr2-109369884;