2-108765511-T-G

Position:

chr2-108765511-T-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 1P and 3B. PP2BP4_ModerateBS2_Supporting

The NM_006267.5(RANBP2):c.4972T>G(p.Phe1658Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000096 in 1,562,054 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0000099 ( 0 hom., cov: 11)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

RANBP2
NM_006267.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3

Conservation

PhyloP100: 2.69

Variant links:

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]

RANBP2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), RANBP2. . Gene score misZ -0.77637 (greater than the threshold 3.09). Trascript score misZ 3.8106 (greater than threshold 3.09). GenCC has associacion of gene with Leigh syndrome, familial acute necrotizing encephalopathy.

BP4

Computational evidence support a benign effect (MetaRNN=0.251325).

BS2

High AC in GnomAdExome4 at 14 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RANBP2	NM_006267.5 linkuse as main transcript	c.4972T>G	p.Phe1658Val	missense_variant	20/29	ENST00000283195.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
RANBP2	ENST00000283195.11 linkuse as main transcript	c.4972T>G	p.Phe1658Val	missense_variant	20/29	1	NM_006267.5	P1
RANBP2	ENST00000697737.1 linkuse as main transcript	c.2603-6190T>G		intron_variant
RANBP2	ENST00000697740.1 linkuse as main transcript	c.2525-6190T>G		intron_variant

Frequencies

GnomAD3 genomes

AF:

0.00000994

AC:

AN:

100588

Hom.:

Cov.:

show subpopulations

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:

0.0000210

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000161

AC:

AN:

248720

Hom.:

AF XY:

0.00000741

AC XY:

AN XY:

134890

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000870

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:

0.00000891

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000958

AC:

AN:

1461466

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727034

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000671

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:

0.00000810

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.00000994

AC:

AN:

100588

Hom.:

Cov.:

AF XY:

0.0000207

AC XY:

AN XY:

48352

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000210

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.00000836

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 11, 2023

The c.4972T>G (p.F1658V) alteration is located in exon 20 (coding exon 20) of the RANBP2 gene. This alteration results from a T to G substitution at nucleotide position 4972, causing the phenylalanine (F) at amino acid position 1658 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Familial acute necrotizing encephalopathy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 31, 2021

This sequence change replaces phenylalanine with valine at codon 1658 of the RANBP2 protein (p.Phe1658Val). The phenylalanine residue is highly conserved and there is a small physicochemical difference between phenylalanine and valine. This variant is present in population databases (rs755016899, ExAC 0.002%). This variant has not been reported in the literature in individuals affected with RANBP2-related conditions. ClinVar contains an entry for this variant (Variation ID: 426479). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C45"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 14, 2017

The F1658V variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. The F1658V variant is not observed at a significant frequency in large population cohorts (Lek et al., 2016; 1000 Genomes Consortium et al., 2015; Exome Variant Server). The F1658V variant is a semi-conservative amino acid substitution, which may impact secondary protein structure as these residues differ in some properties. This substitution occurs at a position that is not conserved. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. In summary, based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.32

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.46

Eigen

Benign

-0.099

Eigen_PC

Benign

-0.13

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.81

M_CAP

Benign

0.043

MetaRNN

Benign

0.25

MetaSVM

Benign

-0.86

MutationAssessor

Pathogenic

3.6

MutationTaster

Benign

1.0

D;N

PrimateAI

Benign

0.39

PROVEAN

Uncertain

-2.5

REVEL

Benign

0.17

Sift

Benign

0.054

Sift4G

Uncertain

0.0050

Polyphen

0.16

Vest4

0.45

MutPred

0.40

Gain of catalytic residue at F1658 (P = 0.0416);

MVP

0.65

MPC

0.52

ClinPred

0.23

GERP RS

2.6

Varity_R

0.12

gMVP

0.40

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over