Genetic Variant LRSAM1:p.Arg718Gly (chr9-127502879-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001005373.4(LRSAM1):c.2152C>G(p.Arg718Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,453,458 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R718C) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

LRSAM1
NM_001005373.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.38

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

Charcot-Marie-Tooth disease axonal type 2P
Inheritance: AR, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, ClinGen

LRSAM1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001005373.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
LRSAM1	NM_001005373.4	MANE Select	c.2152C>G	p.Arg718Gly	missense	Exon 26 of 26	NP_001005373.1
LRSAM1	NM_001005374.4		c.2152C>G	p.Arg718Gly	missense	Exon 25 of 25	NP_001005374.1
LRSAM1	NM_001384142.1		c.2152C>G	p.Arg718Gly	missense	Exon 26 of 26	NP_001371071.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
LRSAM1	ENST00000300417.11	TSL:1 MANE Select	c.2152C>G	p.Arg718Gly	missense	Exon 26 of 26	ENSP00000300417.6
LRSAM1	ENST00000373322.1	TSL:1	c.2152C>G	p.Arg718Gly	missense	Exon 25 of 25	ENSP00000362419.1
LRSAM1	ENST00000676170.1		c.2233C>G	p.Arg745Gly	missense	Exon 27 of 27	ENSP00000502177.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.88e-7

AC:

AN:

1453458

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

722576

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33266

American (AMR)

AF:

0.00

AC:

AN:

43784

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25932

East Asian (EAS)

AF:

0.00

AC:

AN:

39228

South Asian (SAS)

AF:

0.00

AC:

AN:

85006

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51972

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5300

European-Non Finnish (NFE)

AF:

9.02e-7

AC:

AN:

1108950

Other (OTH)

AF:

0.00

AC:

AN:

60020

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.27

BayesDel_addAF

Benign

-0.022

BayesDel_noAF

Benign

-0.27

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.49

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.84

M_CAP

Uncertain

0.13

MetaRNN

Uncertain

0.66

MetaSVM

Benign

-0.35

MutationAssessor

Pathogenic

3.5

PhyloP100

3.4

PrimateAI

Uncertain

0.52

PROVEAN

Uncertain

-4.1

REVEL

Benign

0.24

Sift

Uncertain

0.014

Sift4G

Uncertain

0.028

Polyphen

0.75

Vest4

0.63

MutPred

0.48

Loss of helix (P = 0.0033)

MVP

0.65

MPC

0.60

ClinPred

0.99

GERP RS

5.3

Varity_R

0.60

gMVP

0.88

Mutation Taster

=57/43

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over