NM_032730.5:c.1088G>A

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_032730.5(RTN4IP1):c.1088G>A(p.Arg363Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000639 in 1,612,730 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000066 ( 0 hom. )

Consequence

RTN4IP1
NM_032730.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.0920

Variant links:

Genes affected

RTN4IP1 (HGNC:18647): (reticulon 4 interacting protein 1) This gene encodes a mitochondrial protein that interacts with reticulon 4, which is a potent inhibitor of regeneration following spinal cord injury. This interaction may be important for reticulon-induced inhibition of neurite growth. Mutations in this gene can cause optic atrophy 10, with or without ataxia, cognitive disability, and seizures. There is a pseudogene for this gene on chromosome 12. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

RTN4IP1 links:

CRYBG1 (HGNC:356): (crystallin beta-gamma domain containing 1) Predicted to enable carbohydrate binding activity. [provided by Alliance of Genome Resources, Apr 2022]

CRYBG1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.055725873).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RTN4IP1	NM_032730.5 link	c.1088G>A	p.Arg363Gln	missense_variant	Exon 9 of 9	ENST00000369063.8	NP_116119.2	Q8WWV3-1
CRYBG1	NM_001371242.2 link	c.*3533C>T		downstream_gene_variant		ENST00000633556.3	NP_001358171.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RTN4IP1	ENST00000369063.8 link	c.1088G>A	p.Arg363Gln	missense_variant	Exon 9 of 9	1	NM_032730.5	ENSP00000358059.3		Q8WWV3-1
CRYBG1	ENST00000633556.3 link	c.*3533C>T		downstream_gene_variant		5	NM_001371242.2	ENSP00000488010.2		A0A0J9YWL0

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152158

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000399

AC:

AN:

250412

Hom.:

AF XY:

0.0000443

AC XY:

AN XY:

135462

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:

0.0000531

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.0000664

AC:

AN:

1460572

Hom.:

Cov.:

AF XY:

0.0000661

AC XY:

AN XY:

726660

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000765

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152158

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74328

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000192

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000658

Hom.:

Bravo

AF:

0.0000378

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Oct 21, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 363 of the RTN4IP1 protein (p.Arg363Gln). This variant is present in population databases (rs372866009, gnomAD 0.009%). This variant has not been reported in the literature in individuals affected with RTN4IP1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1364521). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt RTN4IP1 protein function with a negative predictive value of 80%. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.076

BayesDel_addAF

Benign

-0.45

BayesDel_noAF

Benign

-0.68

CADD

Benign

DANN

Benign

0.92

DEOGEN2

Benign

0.032

Eigen

Benign

-0.91

Eigen_PC

Benign

-0.85

FATHMM_MKL

Benign

0.044

LIST_S2

Benign

0.80

M_CAP

Benign

0.0085

MetaRNN

Benign

0.056

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.5

PrimateAI

Benign

0.21

PROVEAN

Benign

-0.81

REVEL

Benign

0.041

Sift

Benign

0.54

Sift4G

Benign

0.64

Polyphen

0.037

Vest4

0.061

MVP

0.081

MPC

0.18

ClinPred

0.066

GERP RS

-2.3

Varity_R

0.072

gMVP

0.34

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.18

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