Variant NM_006790.3:c.220C>A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -18 ACMG points: 0P and 18B. BP4_ModerateBP6_Very_StrongBS1BS2

The NM_006790.3(MYOT):c.220C>A(p.Gln74Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00253 in 1,614,194 control chromosomes in the GnomAD database, including 88 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.013 ( 44 hom., cov: 32)

Exomes 𝑓: 0.0014 ( 44 hom. )

Consequence

MYOT
NM_006790.3 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 3.80

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 made for transcript

Verdict is Benign. Variant got -18 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.07220766).

BP6

Variant 5-137870871-C-A is Benign according to our data. Variant chr5-137870871-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 464369.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 = 0.0134 (2048/152308) while in subpopulation AFR AF= 0.0463 (1926/41554). AF 95% confidence interval is 0.0446. There are 44 homozygotes in gnomad4. There are 965 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 2048 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYOT	NM_006790.3 link	c.220C>A	p.Gln74Lys	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.220C>A	p.Gln74Lys	missense_variant	Exon 2 of 10	1	NM_006790.3	ENSP00000239926.4		A0A0C4DFM5

Frequencies

GnomAD3 genomes

AF:

0.0134

AC:

2040

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0463

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00537

Gnomad ASJ

AF:

0.00115

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00318

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.0119

GnomAD4 exome

AF:

0.00140

AC:

2040

AN:

1461886

Hom.:

Cov.:

AF XY:

0.00121

AC XY:

877

AN XY:

727246

show subpopulations

Gnomad4 AFR exome

AF:

0.0470

Gnomad4 AMR exome

AF:

0.00264

Gnomad4 ASJ exome

AF:

0.000918

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000104

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000134

Gnomad4 OTH exome

AF:

0.00253

GnomAD4 genome

AF:

0.0134

AC:

2048

AN:

152308

Hom.:

Cov.:

AF XY:

0.0130

AC XY:

965

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.0463

Gnomad4 AMR

AF:

0.00536

Gnomad4 ASJ

AF:

0.00115

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000147

Gnomad4 OTH

AF:

0.0118

Alfa

AF:

0.00214

Hom.:

Bravo

AF:

0.0159

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

May 04, 2022

Mendelics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Nov 09, 2017

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

not provided

Benign:1

Sep 28, 2017

Athena Diagnostics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Myofibrillar myopathy 3

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_noAF

Benign

-0.58

CADD

Benign

LIST_S2

Benign

0.54

MetaRNN

Benign

0.072

Sift4G

Benign

0.94

Vest4

0.91

gMVP

0.48

Splicing

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