NM_198271.5:c.252G>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_198271.5(LMOD3):c.252G>A(p.Met84Ile) variant causes a missense change. The variant allele was found at a frequency of 0.0016 in 1,612,738 control chromosomes in the GnomAD database, including 31 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0089 ( 17 hom., cov: 32)

Exomes 𝑓: 0.00084 ( 14 hom. )

Consequence

LMOD3
NM_198271.5 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 6.17

Publications

1 publications found

Variant links:

Genes affected

LMOD3 (HGNC:6649): (leiomodin 3) The protein encoded by this gene is a member of the leiomodin family of proteins. This protein contains three actin-binding domains, a tropomyosin domain, a leucine-rich repeat domain, and a Wiskott-Aldrich syndrome protein homology 2 domain (WH2). Localization of this protein to the pointed ends of thin filaments has been observed, and there is evidence that this protein acts as a catalyst of actin nucleation, and is important to the organization of sarcomeric thin filaments in skeletal muscles. Mutations in this gene have been associated as one cause of Nemaline myopathy, as other genes have also been linked to this disorder. Nemaline myopathy is a disorder characterized by nonprogressive generalized muscle weakness and protein inclusions (nemaline bodies) in skeletal myofibers. Patients with mutations in this gene often present with a severe congenital form of the disorder. [provided by RefSeq, Jan 2015]

LMOD3 Gene-Disease associations (from GenCC):

nemaline myopathy 10
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, G2P
typical nemaline myopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
severe congenital nemaline myopathy
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

LMOD3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0067123175).

BP6

Variant 3-69122135-C-T is Benign according to our data. Variant chr3-69122135-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 435783.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00889 (1354/152256) while in subpopulation AFR AF = 0.0307 (1275/41552). AF 95% confidence interval is 0.0293. There are 17 homozygotes in GnomAd4. There are 644 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 17 AR,AD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LMOD3	NM_198271.5 link	c.252G>A	p.Met84Ile	missense_variant	Exon 1 of 3	ENST00000420581.7	NP_938012.2
LMOD3	NM_001304418.3 link	c.252G>A	p.Met84Ile	missense_variant	Exon 2 of 4		NP_001291347.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
LMOD3	ENST00000420581.7 link	c.252G>A	p.Met84Ile	missense_variant	Exon 1 of 3	1	NM_198271.5	ENSP00000414670.3
LMOD3	ENST00000475434.1 link	c.252G>A	p.Met84Ile	missense_variant	Exon 2 of 4	5		ENSP00000418645.1
LMOD3	ENST00000489031.5 link	c.252G>A	p.Met84Ile	missense_variant	Exon 2 of 4	2		ENSP00000417210.1

Frequencies

GnomAD3 genomes

AF:

0.00885

AC:

1346

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0306

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00406

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:

0.00527

GnomAD2 exomes

AF:

0.00228

AC:

563

AN:

246844

AF XY:

0.00171

show subpopulations

Gnomad AFR exome

AF:

0.0339

Gnomad AMR exome

AF:

0.00108

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000357

Gnomad OTH exome

AF:

0.000501

GnomAD4 exome

AF:

0.000837

AC:

1222

AN:

1460482

Hom.:

Cov.:

AF XY:

0.000724

AC XY:

526

AN XY:

726362

show subpopulations

African (AFR)

AF:

0.0305

AC:

1022

AN:

33462

American (AMR)

AF:

0.00128

AC:

AN:

44586

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26086

East Asian (EAS)

AF:

0.00

AC:

AN:

39630

South Asian (SAS)

AF:

0.0000233

AC:

AN:

85918

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53316

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.0000270

AC:

AN:

1111378

Other (OTH)

AF:

0.00181

AC:

109

AN:

60340

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

116

174

232

290

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

114

152

190

<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

AF:

0.00889

AC:

1354

AN:

152256

Hom.:

Cov.:

AF XY:

0.00865

AC XY:

644

AN XY:

74452

show subpopulations

African (AFR)

AF:

0.0307

AC:

1275

AN:

41552

American (AMR)

AF:

0.00405

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10606

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68022

Other (OTH)

AF:

0.00521

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

130

195

260

325

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00172

Hom.:

Bravo

AF:

0.00968

ESP6500AA

AF:

0.0302

AC:

114

ESP6500EA

AF:

0.000121

AC:

ExAC

AF:

0.00278

AC:

336

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

Oct 16, 2019

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not specified

Benign:1

Aug 24, 2015

Genetic Services Laboratory, University of Chicago

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Nemaline myopathy 10

Benign:1

Dec 31, 2019

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.68

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.36

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.0034

T;T;T

Eigen

Uncertain

0.35

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.82

.;.;T

MetaRNN

Benign

0.0067

T;T;T

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.1

M;M;M

PhyloP100

6.2

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-1.3

N;N;N

REVEL

Benign

0.098

Sift

Uncertain

0.027

D;D;D

Sift4G

Uncertain

0.019

D;D;D

Polyphen

0.70

P;P;P

Vest4

0.37

MutPred

0.44

Gain of glycosylation at S81 (P = 0.0162);Gain of glycosylation at S81 (P = 0.0162);Gain of glycosylation at S81 (P = 0.0162);

MVP

0.24

MPC

0.041

ClinPred

0.036

GERP RS

5.7

PromoterAI

-0.062

Neutral

(source)

Varity_R

0.59

gMVP

0.19

Mutation Taster

=99/1

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over