NM_006790.3:c.343G>A

Variant names:

Variant summary

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

The NM_006790.3(MYOT):c.343G>A(p.Ala115Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000862 in 1,613,366 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A115S) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00074 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00087 ( 1 hom. )

Consequence

MYOT
NM_006790.3 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -0.0190

Publications

5 publications found

Variant links:

Genes affected

MYOT (HGNC:12399): (myotilin) This gene encodes a cystoskeletal protein which plays a significant role in the stability of thin filaments during muscle contraction. This protein binds F-actin, crosslinks actin filaments, and prevents latrunculin A-induced filament disassembly. Mutations in this gene have been associated with limb-girdle muscular dystrophy and myofibrillar myopathies. Several alternatively spliced transcript variants of this gene have been described, but the full-length nature of some of these variants has not been determined.[provided by RefSeq, Oct 2008]

MYOT links:

PKD2L2-DT (HGNC:55557): (PKD2L2 divergent transcript)

PKD2L2-DT 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=0.00510779).

BP6

Variant 5-137870994-G-A is Benign according to our data. Variant chr5-137870994-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 95439.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.000736 (112/152206) while in subpopulation NFE AF = 0.00124 (84/68010). AF 95% confidence interval is 0.00102. There are 0 homozygotes in GnomAd4. There are 51 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 112 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYOT	NM_006790.3 link	c.343G>A	p.Ala115Thr	missense_variant	Exon 2 of 10	ENST00000239926.9	NP_006781.1	Q9UBF9A0A0C4DFM5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYOT	ENST00000239926.9 link	c.343G>A	p.Ala115Thr	missense_variant	Exon 2 of 10	1	NM_006790.3	ENSP00000239926.4		A0A0C4DFM5

Frequencies

GnomAD3 genomes

AF:

0.000736

AC:

112

AN:

152088

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000266

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000851

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000623

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00123

Gnomad OTH

AF:

0.000479

GnomAD2 exomes

AF:

0.000839

AC:

207

AN:

246722

AF XY:

0.000779

show subpopulations

Gnomad AFR exome

AF:

0.000124

Gnomad AMR exome

AF:

0.00180

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00113

Gnomad OTH exome

AF:

0.000660

GnomAD4 exome

AF:

0.000875

AC:

1278

AN:

1461160

Hom.:

Cov.:

AF XY:

0.000827

AC XY:

601

AN XY:

726946

show subpopulations

African (AFR)

AF:

0.000299

AC:

AN:

33460

American (AMR)

AF:

0.00157

AC:

AN:

44692

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39694

South Asian (SAS)

AF:

0.000452

AC:

AN:

86236

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00101

AC:

1125

AN:

1111424

Other (OTH)

AF:

0.000480

AC:

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

128

193

257

321

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

126

168

210

<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:

0.000736

AC:

112

AN:

152206

Hom.:

Cov.:

AF XY:

0.000685

AC XY:

AN XY:

74410

show subpopulations

African (AFR)

AF:

0.000265

AC:

AN:

41538

American (AMR)

AF:

0.000850

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.000623

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10586

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00124

AC:

AN:

68010

Other (OTH)

AF:

0.000474

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000787

Hom.:

Bravo

AF:

0.000850

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00104

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00140

AC:

ExAC

AF:

0.000832

AC:

101

EpiCase

AF:

0.00115

EpiControl

AF:

0.000950

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:3

Nov 05, 2019

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 15947064) -

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

May 27, 2018

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.Ala115Thr variant (rs114194130) has not been reported in the medical literature, gene specific variation databases, nor has it been previously identified by our laboratory. This variant is listed in the Genome Aggregation Database (gnomAD) with a frequency of 0.2 percent in the Latino population (identified on 62 out of 34,292 chromosomes) and has been reported to the ClinVar database (Variation ID: 95439). The alanine at position 115 is weakly conserved considering 12 species (Alamut v2.11) and computational analyses of the p.Ala115Thr variant on protein structure and function indicates a neutral effect (SIFT: tolerated, PolyPhen-2: benign). Based on these observations, the p.Ala115Thr variant is likely to be benign. -

not specified

Benign:2

Feb 22, 2013

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Oct 25, 2024

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Myofibrillar myopathy 3

Benign:2

Jan 27, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

MYOT-related disorder

Benign:1

Feb 01, 2022

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.61

BayesDel_noAF

Benign

-0.66

CADD

Benign

1.5

(source)

DANN

Benign

0.70

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.015

LIST_S2

Benign

0.56

M_CAP

Benign

0.017

MetaRNN

Benign

0.0051

MetaSVM

Benign

-1.1

PhyloP100

-0.019

PrimateAI

Benign

0.25

PROVEAN

Benign

-0.090

REVEL

Benign

0.073

Sift

Benign

1.0

Sift4G

Benign

0.59

Vest4

0.074

MVP

0.59

MPC

0.16

ClinPred

0.0029

GERP RS

1.0

gMVP

0.13

Mutation Taster

=297/3

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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