Genetic Variant RTN4:p.Leu981Phe (chr2-55025158-G-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_020532.5(RTN4):c.2941C>T(p.Leu981Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000336 in 1,613,716 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00037 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00033 ( 2 hom. )

Consequence

RTN4
NM_020532.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.51

Variant links:

Genes affected

RTN4 (HGNC:14085): (reticulon 4) 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. The product of this gene is a potent neurite outgrowth inhibitor which may also help block the regeneration of the central nervous system in higher vertebrates. Alternatively spliced transcript variants derived both from differential splicing and differential promoter usage and encoding different isoforms have been identified. [provided by RefSeq, Jul 2008]

RTN4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.009067297).

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RTN4	NM_020532.5 link	c.2941C>T	p.Leu981Phe	missense_variant	Exon 3 of 9	ENST00000337526.11	NP_065393.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RTN4	ENST00000337526.11 link	c.2941C>T	p.Leu981Phe	missense_variant	Exon 3 of 9	1	NM_020532.5	ENSP00000337838.6		Q9NQC3-1

Frequencies

GnomAD3 genomes

AF:

0.000368

AC:

AN:

152158

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000393

Gnomad ASJ

AF:

0.00605

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000382

Gnomad OTH

AF:

0.00144

GnomAD3 exomes

AF:

0.000371

AC:

AN:

250520

Hom.:

AF XY:

0.000377

AC XY:

AN XY:

135394

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000232

Gnomad ASJ exome

AF:

0.00438

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000336

Gnomad OTH exome

AF:

0.000491

GnomAD4 exome

AF:

0.000333

AC:

487

AN:

1461440

Hom.:

Cov.:

AF XY:

0.000341

AC XY:

248

AN XY:

727004

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000269

Gnomad4 ASJ exome

AF:

0.00532

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000273

Gnomad4 OTH exome

AF:

0.000513

GnomAD4 genome

AF:

0.000368

AC:

AN:

152276

Hom.:

Cov.:

AF XY:

0.000389

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000393

Gnomad4 ASJ

AF:

0.00605

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000382

Gnomad4 OTH

AF:

0.00142

Alfa

AF:

0.000592

Hom.:

Bravo

AF:

0.000370

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000930

AC:

ExAC

AF:

0.000428

AC:

EpiCase

AF:

0.000382

EpiControl

AF:

0.000533

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 26, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2941C>T (p.L981F) alteration is located in exon 3 (coding exon 3) of the RTN4 gene. This alteration results from a C to T substitution at nucleotide position 2941, causing the leucine (L) at amino acid position 981 to be replaced by a phenylalanine (F). 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

Benign

0.085

BayesDel_addAF

Benign

-0.47

BayesDel_noAF

Benign

-0.59

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.19

.;.;T;.;.

Eigen

Benign

-0.18

Eigen_PC

Benign

-0.22

FATHMM_MKL

Benign

0.58

LIST_S2

Benign

0.71

.;.;T;.;T

M_CAP

Benign

0.0082

MetaRNN

Benign

0.0091

T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.1

.;.;M;.;.

PrimateAI

Benign

0.28

PROVEAN

Benign

-1.5

N;N;N;N;N

REVEL

Benign

0.063

Sift

Benign

0.040

D;D;D;D;D

Sift4G

Benign

0.062

T;T;T;T;T

Polyphen

0.93

.;.;P;.;.

Vest4

0.095

MVP

0.40

MPC

0.033

ClinPred

0.047

GERP RS

1.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.069

gMVP

0.085

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