rs143479340

Positions:

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 4P and 4B. PM1PM2BP4_Strong

The NM_001005373.4(LRSAM1):c.2042G>A(p.Arg681Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000138 in 1,613,046 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00026 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

LRSAM1
NM_001005373.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 0.0350

Variant links:

Genes affected

LRSAM1 (HGNC:25135): (leucine rich repeat and sterile alpha motif containing 1) This gene encodes a ring finger protein involved in a variety of functions, including regulation of signaling pathways and cell adhesion, mediation of self-ubiquitylation, and involvement in cargo sorting during receptor endocytosis. Mutations in this gene have been associated with Charcot-Marie-Tooth disease. Multiple transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Jan 2012]

LRSAM1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM1

In a zinc_finger_region RING-type (size 35) in uniprot entity LRSM1_HUMAN there are 7 pathogenic changes around while only 0 benign (100%) in NM_001005373.4

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.024203539).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LRSAM1	NM_001005373.4 linkuse as main transcript	c.2042G>A	p.Arg681Gln	missense_variant	25/26	ENST00000300417.11	NP_001005373.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LRSAM1	ENST00000300417.11 linkuse as main transcript	c.2042G>A	p.Arg681Gln	missense_variant	25/26	1	NM_001005373.4	ENSP00000300417	P1	Q6UWE0-1

Frequencies

GnomAD3 genomes

AF:

0.000237

AC:

AN:

152026

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000628

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000722

AC:

AN:

249476

Hom.:

AF XY:

0.0000518

AC XY:

AN XY:

135082

show subpopulations

Gnomad AFR exome

AF:

0.000310

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000545

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000620

Gnomad OTH exome

AF:

0.000164

GnomAD4 exome

AF:

0.000125

AC:

183

AN:

1460902

Hom.:

Cov.:

AF XY:

0.000131

AC XY:

AN XY:

726808

show subpopulations

Gnomad4 AFR exome

AF:

0.000597

Gnomad4 AMR exome

AF:

0.0000447

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000134

Gnomad4 OTH exome

AF:

0.0000994

GnomAD4 genome

AF:

0.000263

AC:

AN:

152144

Hom.:

Cov.:

AF XY:

0.000269

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.000723

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000136

Hom.:

Bravo

AF:

0.000193

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000988

AC:

Asia WGS

AF:

0.00144

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Feb 26, 2024	In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 22781092) -
Uncertain significance, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Charcot-Marie-Tooth disease axonal type 2P

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 28, 2023

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 681 of the LRSAM1 protein (p.Arg681Gln). This variant is present in population databases (rs143479340, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with LRSAM1-related conditions. ClinVar contains an entry for this variant (Variation ID: 540006). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt LRSAM1 protein function with a negative predictive value of 80%. 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. -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 09, 2021

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.068

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.41

CADD

Benign

4.4

DANN

Benign

0.88

DEOGEN2

Benign

0.031

T;.;T;T

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.16

LIST_S2

Benign

0.34

T;T;.;.

M_CAP

Benign

0.073

MetaRNN

Benign

0.024

T;T;T;T

MetaSVM

Benign

-0.87

MutationAssessor

Benign

0.23

N;.;N;N

MutationTaster

Benign

0.99

N;N;N;N

PrimateAI

Benign

0.34

PROVEAN

Benign

0.29

N;N;N;N

REVEL

Benign

0.17

Sift

Benign

0.51

T;T;T;T

Sift4G

Benign

0.51

T;T;T;T

Polyphen

0.0020

B;B;B;B

Vest4

0.15

MVP

0.41

MPC

0.20

ClinPred

0.0025

GERP RS

-1.0

Varity_R

0.028

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