chr19-45488874-C-A

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BS2

The NM_005619.5(RTN2):c.1354G>T(p.Val452Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000344 in 1,451,684 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: 0.0000034 ( 0 hom. )

Consequence

RTN2
NM_005619.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.31

Variant links:

Genes affected

RTN2 (HGNC:10468): (reticulon 2) This gene belongs to the family of reticulon encoding genes. Reticulons are associated with the endoplasmic reticulum, and are involved in neuroendocrine secretion or in membrane trafficking in neuroendocrine cells. Reticulon proteins also play an important role in the replication of positive-strand RNA (ssRNA) viruses. Mutations at this locus have been associated with autosomal dominant spastic paraplegia-12. [provided by RefSeq, Aug 2020]

RTN2 links:

PPM1N (HGNC:26845): (protein phosphatase, Mg2+/Mn2+ dependent 1N (putative)) Predicted to enable metal ion binding activity and protein serine/threonine phosphatase activity. Predicted to be involved in negative regulation of I-kappaB kinase/NF-kappaB signaling and positive regulation of canonical Wnt signaling pathway. Predicted to be active in cytosol and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

PPM1N 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;

BS2

High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RTN2	NM_005619.5 link	c.1354G>T	p.Val452Leu	missense_variant	Exon 7 of 11	ENST00000245923.9	NP_005610.1	O75298-1A8K7F2Q6GMT0
RTN2	NM_206900.3 link	c.1135G>T	p.Val379Leu	missense_variant	Exon 6 of 10		NP_996783.1	O75298-2A8K7F2Q6GMT0
RTN2	NM_206901.3 link	c.334G>T	p.Val112Leu	missense_variant	Exon 3 of 7		NP_996784.1	O75298-3A8K7F2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RTN2	ENST00000245923.9 link	c.1354G>T	p.Val452Leu	missense_variant	Exon 7 of 11	1	NM_005619.5	ENSP00000245923.3		O75298-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000873

AC:

AN:

228980

Hom.:

AF XY:

0.00000809

AC XY:

AN XY:

123640

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000318

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:

0.00000967

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000344

AC:

AN:

1451684

Hom.:

Cov.:

AF XY:

0.00000277

AC XY:

AN XY:

721188

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000474

Gnomad4 ASJ exome

AF:

0.0000388

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.02e-7

Gnomad4 OTH exome

AF:

0.0000167

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Spastic paraplegia

Uncertain:1

Aug 06, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 452 of the RTN2 protein (p.Val452Leu). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with RTN2-related conditions. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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

Pathogenic

0.88

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Uncertain

0.040

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.64

D;.;T;.

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.94

D;D;D;D

M_CAP

Benign

0.039

MetaRNN

Uncertain

0.61

D;D;D;D

MetaSVM

Benign

-0.51

MutationAssessor

Uncertain

2.3

M;.;.;.

PrimateAI

Uncertain

0.59

PROVEAN

Uncertain

-3.0

D;D;.;D

REVEL

Uncertain

0.31

Sift

Uncertain

0.0010

D;D;.;D

Sift4G

Uncertain

0.017

D;D;D;D

Polyphen

0.98

D;.;.;D

Vest4

0.48

MutPred

0.73

Gain of helix (P = 0.132);.;.;.;

MVP

0.57

MPC

0.90

ClinPred

0.96

GERP RS

5.6

Varity_R

0.78

gMVP

0.65

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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