5-137877559-G-C

Position:

• chr5-137877559-G-C

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 1P and 20B. PP3 BP4_Strong BP6_Very_Strong BS1 BS2

The NM_006790.3(MYOT):​c.571G>C​(p.Gly191Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000824 in 1,613,944 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00017 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000073 (0 hom.)
• Consequence: MYOT NM_006790.3 missense
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4
• Conservation: PhyloP100: 8.46

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 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -19 ACMG points.

• PP3: Multiple lines of computational evidence support a deleterious effect 8: AlphaMissense, BayesDel_noAF, Cadd, Dann, Eigen, phyloP100way_vertebrate, PrimateAI, PROVEAN [when max_spliceai, FATHMM_MKL, MetaRNN, MutationTaster was below the threshold]
• BP4: Computational evidence support a benign effect (MetaRNN=0.034995645).
• BP6: Variant 5-137877559-G-C is Benign according to our data. Variant chr5-137877559-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 260036.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr5-137877559-G-C is described in Lovd as [Likely_benign].
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000171 (26/152202) while in subpopulation EAS AF= 0.00482 (25/5186). AF 95% confidence interval is 0.00335. There are 0 homozygotes in gnomad4. There are 11 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 26 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYOT	NM_006790.3	c.571G>C	p.Gly191Arg	missense_variant	4/10	ENST00000239926.9	NP_006781.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYOT	ENST00000239926.9	c.571G>C	p.Gly191Arg	missense_variant	4/10	1	NM_006790.3	ENSP00000239926.4

Frequencies

GnomAD3 genomes AF: 0.000171 AC: 26 AN: 152084 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000656

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00481

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000342 AC: 86 AN: 251482 Hom.: 0 AF XY: 0.000302 AC XY: 41 AN XY: 135912

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00451

Gnomad SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000732 AC: 107 AN: 1461742 Hom.: 0 Cov.: 30 AF XY: 0.0000688 AC XY: 50 AN XY: 727174

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00207

Gnomad4 SAS exome AF: 0.000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.000232

GnomAD4 genome AF: 0.000171 AC: 26 AN: 152202 Hom.: 0 Cov.: 32 AF XY: 0.000148 AC XY: 11 AN XY: 74404

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.0000655

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00482

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000427 Hom.: 0

Bravo AF: 0.000144

ExAC AF: 0.000255 AC: 31

Asia WGS AF: 0.00115 AC: 4 AN: 3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:3

Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	May 25, 2018	- -
Benign, criteria provided, single submitter	clinical testing	Athena Diagnostics	Apr 13, 2017	- -

Myofibrillar myopathy 3 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 13, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Uncertain	0.094	D
BayesDel_noAF	Pathogenic	0.36
CADD	Pathogenic	28
DANN	Pathogenic	1.0
Eigen	Pathogenic	0.74
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.95	D;D;D
M_CAP	Uncertain	0.086	D
MetaRNN	Benign	0.035	T;T;T
MetaSVM	Uncertain	0.25	D
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-5.5	D;D;D
REVEL	Uncertain	0.55
Sift	Benign	0.13	T;D;D
Sift4G	Pathogenic	0.0	D;D;D
Vest4		0.87
MutPred		0.31		Gain of MoRF binding (P = 0.0042);.;.;
MVP		0.95
MPC		0.76
ClinPred		0.16	T
GERP RS		5.7
gMVP		0.66

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

LitVar

Other links and lift over

dbSNP: rs199789331; hg19: chr5-137213248;