chr17-10533312-A-G

Variant names:

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBS1_SupportingBS2

The NM_017534.6(MYH2):c.2414T>C(p.Val805Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000397 in 1,613,884 control chromosomes in the GnomAD database, including 5 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 0.00049 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00039 ( 5 hom. )

Consequence

MYH2
NM_017534.6 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1U:3B:3

Conservation

PhyloP100: 1.58

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 -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.011940777).

BS1

Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.000487 (74/152052) while in subpopulation EAS AF= 0.0127 (66/5180). AF 95% confidence interval is 0.0103. There are 0 homozygotes in gnomad4. There are 37 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Homozygotes in GnomAdExome4 at 5 SD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH2	NM_017534.6 link	c.2414T>C	p.Val805Ala	missense_variant	Exon 21 of 40	ENST00000245503.10	NP_060004.3	Q9UKX2-1
MYH2	NM_001100112.2 link	c.2414T>C	p.Val805Ala	missense_variant	Exon 21 of 40		NP_001093582.1	Q9UKX2-1
MYHAS	NR_125367.1 link	n.168-34225A>G		intron_variant	Intron 2 of 10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH2	ENST00000245503.10 link	c.2414T>C	p.Val805Ala	missense_variant	Exon 21 of 40	1	NM_017534.6	ENSP00000245503.5		Q9UKX2-1

Frequencies

GnomAD3 genomes

AF:

0.000487

AC:

AN:

151934

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000459

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.0127

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000748

AC:

188

AN:

251434

Hom.:

AF XY:

0.000648

AC XY:

AN XY:

135880

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0102

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000388

AC:

567

AN:

1461832

Hom.:

Cov.:

AF XY:

0.000355

AC XY:

258

AN XY:

727220

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0125

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00116

GnomAD4 genome

AF:

0.000487

AC:

AN:

152052

Hom.:

Cov.:

AF XY:

0.000498

AC XY:

AN XY:

74332

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000458

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.0127

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000562

Hom.:

Bravo

AF:

0.000484

ExAC

AF:

0.000807

AC:

Asia WGS

AF:

0.00289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1Uncertain:3Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Myopathy, proximal, and ophthalmoplegia

Pathogenic:1Uncertain:1Benign:2

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 27, 2017	This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -
Likely pathogenic, flagged submission	reference population	Soonchunhyang University Bucheon Hospital, Soonchunhyang University Medical Center	Mar 18, 2016	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Mendelics	May 28, 2019	- -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 19, 2025	- -

not provided

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Jan 11, 2024	BS1 -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 29, 2019	This variant is associated with the following publications: (PMID: 22349865, 27066573) -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Mar 29, 2016

Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: 1.1% East Asian ExAC, 2 homozygotes, not in ClinVar. Cai 2011 reported the variant in 3/21 Jpanese patients with inclusion body myositis. Clinical features of IBM include adult-onset weakness of proximal or distal muscle and normal or slightly elevated serum creatine kinase (CK) level. This variant has not been associated with myopathy ith external ophthalmoplegia. Therefore, despite of the classification of the variant, I do not think the disease meets criteria for reporting in BabySeq. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Uncertain

-0.050

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.22

T;T

Eigen

Benign

-0.22

Eigen_PC

Benign

-0.13

FATHMM_MKL

Benign

0.55

LIST_S2

Benign

0.70

.;T

MetaRNN

Benign

0.012

T;T

MetaSVM

Benign

-0.58

MutationAssessor

Uncertain

2.4

M;M

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-2.1

N;N

REVEL

Uncertain

0.32

Sift

Benign

0.048

D;D

Sift4G

Benign

0.67

T;T

Polyphen

0.0020

B;B

Vest4

0.82

MVP

0.70

MPC

0.82

ClinPred

0.080

GERP RS

5.2

Varity_R

0.15

gMVP

0.44

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