Genetic Variant MYOG:p.Leu50Phe (chr1-203085814-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_002479.6(MYOG):c.148C>T(p.Leu50Phe) 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 1,461,660 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 Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MYOG
NM_002479.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.73

Variant links:

Genes affected

MYOG (HGNC:7612): (myogenin) Myogenin is a muscle-specific transcription factor that can induce myogenesis in a variety of cell types in tissue culture. It is a member of a large family of proteins related by sequence homology, the helix-loop-helix (HLH) proteins. It is essential for the development of functional skeletal muscle. [provided by RefSeq, Jul 2008]

MYOG links:

MYOPARR (HGNC:54178): (myogenin promoter associated myogenic regulatory antisense long non coding RNA) Predicted to enable RNA polymerase II core promoter sequence-specific DNA binding activity. Predicted to be involved in myoblast fate specification. Predicted to act upstream of or within with a positive effect on gene expression. Predicted to act upstream of or within protein-containing complex assembly and skeletal muscle fiber development. [provided by Alliance of Genome Resources, Apr 2022]

MYOPARR links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.3775481).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYOG	NM_002479.6 link	c.148C>T	p.Leu50Phe	missense_variant	Exon 1 of 3	ENST00000241651.5	NP_002470.2	P15173
MYOPARR	NR_160550.1 link	n.388-669G>A		intron_variant	Intron 2 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYOG	ENST00000241651.5 link	c.148C>T	p.Leu50Phe	missense_variant	Exon 1 of 3	1	NM_002479.6	ENSP00000241651.4		P15173

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250332

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135430

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461660

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727122

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 20, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.148C>T (p.L50F) alteration is located in exon 1 (coding exon 1) of the MYOG gene. This alteration results from a C to T substitution at nucleotide position 148, causing the leucine (L) at amino acid position 50 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.095

BayesDel_noAF

Benign

-0.29

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.50

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.56

M_CAP

Uncertain

0.26

MetaRNN

Benign

0.38

MetaSVM

Uncertain

0.30

MutationAssessor

Benign

1.6

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-0.87

REVEL

Uncertain

0.31

Sift

Benign

0.27

Sift4G

Benign

0.27

Polyphen

0.98

Vest4

0.24

MutPred

0.34

Gain of methylation at K53 (P = 0.084);

MVP

0.71

MPC

1.3

ClinPred

0.56

GERP RS

5.7

Varity_R

0.074

gMVP

0.26

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

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