Genetic Variant NM_001005373.4:c.1510A>G (chr9-127492808-A-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001005373.4(LRSAM1):c.1510A>G(p.Ile504Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,430 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. 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. I504F) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

LRSAM1
NM_001005373.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.0510

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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.09127581).

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.1510A>G	p.Ile504Val	missense	Exon 21 of 26	NP_001005373.1
LRSAM1	NM_001005374.4		c.1510A>G	p.Ile504Val	missense	Exon 20 of 25	NP_001005374.1
LRSAM1	NM_001384142.1		c.1510A>G	p.Ile504Val	missense	Exon 21 of 26	NP_001371071.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
LRSAM1	ENST00000300417.11	TSL:1 MANE Select	c.1510A>G	p.Ile504Val	missense	Exon 21 of 26	ENSP00000300417.6
LRSAM1	ENST00000373322.1	TSL:1	c.1510A>G	p.Ile504Val	missense	Exon 20 of 25	ENSP00000362419.1
LRSAM1	ENST00000676170.1		c.1591A>G	p.Ile531Val	missense	Exon 22 of 27	ENSP00000502177.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250416

AF XY:

0.00000737

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000884

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461430

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727030

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86242

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53038

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111980

Other (OTH)

AF:

0.00

AC:

AN:

60386

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000508

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.085

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.45

CADD

Benign

(source)

DANN

Benign

0.91

DEOGEN2

Benign

0.10

Eigen

Benign

-0.67

Eigen_PC

Benign

-0.52

FATHMM_MKL

Benign

0.42

LIST_S2

Benign

0.69

M_CAP

Benign

0.011

MetaRNN

Benign

0.091

MetaSVM

Benign

-0.92

MutationAssessor

Benign

1.3

PhyloP100

0.051

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.66

REVEL

Benign

0.048

Sift

Benign

0.27

Sift4G

Benign

0.54

Polyphen

0.0010

Vest4

0.23

MutPred

0.12

Gain of MoRF binding (P = 0.153)

MVP

0.56

MPC

0.14

ClinPred

0.070

GERP RS

0.69

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.021

gMVP

0.055

Mutation Taster

=96/4

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.15

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over