Genetic Variant MYH2:p.Glu1103Val (chr17-10529208-T-A) – ACMG Classification: Benign (-8 pts)

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 1P and 9B. PP3BP4_StrongBP6BS1

The NM_017534.6(MYH2):c.3308A>T(p.Glu1103Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000232 in 1,614,276 control chromosomes in the GnomAD database, including 1 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 0.00079 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00017 ( 1 hom. )

Consequence

MYH2
NM_017534.6 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: 7.71

Publications

2 publications found

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:

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:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -8 ACMG points.

PP3

Multiple lines of computational evidence support a deleterious effect 9: AlphaMissense, BayesDel_noAF, Cadd, Eigen, MutationAssessor, phyloP100way_vertebrate, PROVEAN, REVEL, REVEL [when max_spliceai, FATHMM_MKL, MetaRNN, MutationTaster was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.051382124).

BP6

Variant 17-10529208-T-A is Benign according to our data. Variant chr17-10529208-T-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 465934.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000787 (120/152394) while in subpopulation AFR AF = 0.00262 (109/41598). AF 95% confidence interval is 0.00222. There are 0 homozygotes in GnomAd4. There are 57 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017534.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MYH2	NM_017534.6	MANE Select	c.3308A>T	p.Glu1103Val	missense	Exon 26 of 40	NP_060004.3
MYH2	NM_001100112.2		c.3308A>T	p.Glu1103Val	missense	Exon 26 of 40	NP_001093582.1	Q9UKX2-1
MYHAS	NR_125367.1		n.168-38329T>A		intron	N/A

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MYH2	ENST00000245503.10	TSL:1 MANE Select	c.3308A>T	p.Glu1103Val	missense	Exon 26 of 40	ENSP00000245503.5	Q9UKX2-1
MYH2	ENST00000532183.6	TSL:1	c.1974+7322A>T		intron	N/A	ENSP00000433944.1	Q9UKX2-2
MYH2	ENST00000622564.4	TSL:1	c.1974+7322A>T		intron	N/A	ENSP00000482463.1	Q9UKX2-2

Frequencies

GnomAD3 genomes

AF:

0.000788

AC:

120

AN:

152276

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00263

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000334

AC:

AN:

251330

AF XY:

0.000280

show subpopulations

Gnomad AFR exome

AF:

0.00289

Gnomad AMR exome

AF:

0.000636

Gnomad ASJ exome

AF:

0.000397

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000924

Gnomad NFE exome

AF:

0.0000528

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000174

AC:

254

AN:

1461882

Hom.:

Cov.:

AF XY:

0.000143

AC XY:

104

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.00376

AC:

126

AN:

33480

American (AMR)

AF:

0.000626

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.000459

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000348

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.0000374

AC:

AN:

53408

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000495

AC:

AN:

1112012

Other (OTH)

AF:

0.000447

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.492

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.000787

AC:

120

AN:

152394

Hom.:

Cov.:

AF XY:

0.000765

AC XY:

AN XY:

74528

show subpopulations

African (AFR)

AF:

0.00262

AC:

109

AN:

41598

American (AMR)

AF:

0.000261

AC:

AN:

15314

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.000207

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

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:

0.000245

Hom.:

Bravo

AF:

0.000941

ESP6500AA

AF:

0.00386

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000412

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

MYH2-related disorder (1)

Myopathy, proximal, and ophthalmoplegia (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.59

BayesDel_addAF

Uncertain

0.063

BayesDel_noAF

Pathogenic

0.31

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.54

Eigen

Pathogenic

0.75

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.96

M_CAP

Uncertain

0.21

MetaRNN

Benign

0.051

MetaSVM

Uncertain

0.62

MutationAssessor

Pathogenic

3.7

PhyloP100

7.7

PrimateAI

Uncertain

0.75

PROVEAN

Pathogenic

-5.6

REVEL

Pathogenic

0.84

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.0030

Polyphen

0.98

Vest4

0.76

MVP

0.93

MPC

1.2

ClinPred

0.11

GERP RS

5.3

Varity_R

0.64

gMVP

0.48

Mutation Taster

=39/61

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over