rs200217946

Variant names:

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 1P and 11B. PP3BP4_ModerateBP6BS1BS2

The NM_017534.6(MYH2):c.3128C>T(p.Ser1043Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000342 in 1,614,028 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00035 ( 3 hom. )

Consequence

MYH2
NM_017534.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 7.72

Variant links:

Genes affected

MYH2 (HGNC:7572): (myosin heavy chain 2) Myosins are actin-based motor proteins that function in the generation of mechanical force in eukaryotic cells. Muscle myosins are heterohexamers composed of 2 myosin heavy chains and 2 pairs of nonidentical myosin light chains. This gene encodes a member of the class II or conventional myosin heavy chains, and functions in skeletal muscle contraction. This gene is found in a cluster of myosin heavy chain genes on chromosome 17. A mutation in this gene results in inclusion body myopathy-3. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Sep 2009]

MYH2 links:

ENSG00000272736 (HGNC:):

ENSG00000272736 links:

MYHAS (HGNC:50609): (myosin heavy chain gene cluster antisense RNA) Predicted to enable primary miRNA binding activity. Predicted to be involved in response to muscle activity and skeletal muscle fiber development. Predicted to act upstream of or within with a positive effect on gene expression. Predicted to be located in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

MYHAS links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

PP3

Multiple lines of computational evidence support a deleterious effect 8: AlphaMissense, BayesDel_noAF, Eigen, MutationAssessor, phyloP100way_vertebrate, PrimateAI, PROVEAN, REVEL [when max_spliceai, FATHMM_MKL, MetaRNN, MutationTaster was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.09905121).

BP6

Variant 17-10529471-G-A is Benign according to our data. Variant chr17-10529471-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 321678.We mark this variant Likely_benign, oryginal submissions are: {Benign=1, Uncertain_significance=2}.

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000263 (40/152142) while in subpopulation AMR AF= 0.000917 (14/15272). AF 95% confidence interval is 0.000554. There are 0 homozygotes in gnomad4. There are 12 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 3 SD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH2	NM_017534.6 link	c.3128C>T	p.Ser1043Phe	missense_variant	Exon 25 of 40	ENST00000245503.10	NP_060004.3	Q9UKX2-1
MYH2	NM_001100112.2 link	c.3128C>T	p.Ser1043Phe	missense_variant	Exon 25 of 40		NP_001093582.1	Q9UKX2-1
MYHAS	NR_125367.1 link	n.168-38066G>A		intron_variant	Intron 2 of 10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH2	ENST00000245503.10 link	c.3128C>T	p.Ser1043Phe	missense_variant	Exon 25 of 40	1	NM_017534.6	ENSP00000245503.5		Q9UKX2-1

Frequencies

GnomAD3 genomes

AF:

0.000263

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000917

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:

0.000279

Gnomad OTH

AF:

0.000958

GnomAD3 exomes

AF:

0.000625

AC:

157

AN:

251352

Hom.:

AF XY:

0.000596

AC XY:

AN XY:

135848

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00327

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:

0.000246

Gnomad OTH exome

AF:

0.00261

GnomAD4 exome

AF:

0.000350

AC:

512

AN:

1461886

Hom.:

Cov.:

AF XY:

0.000348

AC XY:

253

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00306

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:

0.000298

Gnomad4 OTH exome

AF:

0.000695

GnomAD4 genome

AF:

0.000263

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74326

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.000917

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000279

Gnomad4 OTH

AF:

0.000958

Alfa

AF:

0.000315

Hom.:

Bravo

AF:

0.000404

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000626

AC:

EpiCase

AF:

0.000436

EpiControl

AF:

0.000237

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 12, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: MYH2 c.3128C>T (p.Ser1043Phe) results in a non-conservative amino acid change located in the Myosin Tail domain (IPR002928) of the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00062 in 251352 control chromosomes in the gnomAD database, including 1 homozygotes. To our knowledge, no occurrence of c.3128C>T in individuals affected with Myopathy, Proximal, And Ophthalmoplegia and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 321678). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Inclusion Body Myopathy, Dominant

Uncertain:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Myopathy, proximal, and ophthalmoplegia

Benign:1

Dec 31, 2024

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

0.61

BayesDel_addAF

Uncertain

0.090

BayesDel_noAF

Pathogenic

0.35

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.65

D;D

Eigen

Pathogenic

0.90

Eigen_PC

Pathogenic

0.83

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.84

.;T

M_CAP

Uncertain

0.25

MetaRNN

Benign

0.099

T;T

MetaSVM

Pathogenic

0.97

MutationAssessor

Pathogenic

3.1

M;M

PrimateAI

Pathogenic

0.81

PROVEAN

Pathogenic

-4.6

D;D

REVEL

Pathogenic

0.82

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.0040

D;D

Polyphen

0.95

P;P

Vest4

0.76

MVP

0.98

MPC

1.1

ClinPred

0.15

GERP RS

5.2

Varity_R

0.79

gMVP

0.46

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