rs200505060

Positions:

• chr17-10528852-T-C

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_Strong BP6_Very_Strong BP7 BS2

The NM_017534.6(MYH2):​c.3582A>G​(p.Thr1194=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000796 in 1,613,770 control chromosomes in the GnomAD database, including 23 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.00077 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00080 (23 hom.)
• Consequence: MYH2 NM_017534.6 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5
• Conservation: PhyloP100: -3.53

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]

(HGNC:):

ACMG classification

Verdict is Benign. Variant got -17 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.0).
• BP6: Variant 17-10528852-T-C is Benign according to our data. Variant chr17-10528852-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 534363.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-3.53 with no splicing effect.
• BS2: High Homozygotes in GnomAdExome4 at 23 SD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYH2	NM_017534.6	c.3582A>G	p.Thr1194=	synonymous_variant	27/40	ENST00000245503.10
MYHAS	NR_125367.1	n.168-38685T>C		intron_variant, non_coding_transcript_variant
MYH2	NM_001100112.2	c.3582A>G	p.Thr1194=	synonymous_variant	27/40

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYH2	ENST00000245503.10	c.3582A>G	p.Thr1194=	synonymous_variant	27/40	1	NM_017534.6	P1
	ENST00000399342.6	n.207-4472T>C		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.000769 AC: 117 AN: 152220 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000265

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00308

Gnomad SAS AF: 0.0133

Gnomad FIN AF: 0.00141

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000132

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.00164 AC: 411 AN: 251160 Hom.: 8 AF XY: 0.00214 AC XY: 291 AN XY: 135696

Gnomad AFR exome AF: 0.000246

Gnomad AMR exome AF: 0.0000578

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00207

Gnomad SAS exome AF: 0.0114

Gnomad FIN exome AF: 0.000647

Gnomad NFE exome AF: 0.0000352

Gnomad OTH exome AF: 0.000489

GnomAD4 exome AF: 0.000799 AC: 1167 AN: 1461432 Hom.: 23 Cov.: 32 AF XY: 0.00111 AC XY: 806 AN XY: 726970

Gnomad4 AFR exome AF: 0.000209

Gnomad4 AMR exome AF: 0.0000671

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00166

Gnomad4 SAS exome AF: 0.0109

Gnomad4 FIN exome AF: 0.000524

Gnomad4 NFE exome AF: 0.0000567

Gnomad4 OTH exome AF: 0.00103

GnomAD4 genome AF: 0.000768 AC: 117 AN: 152338 Hom.: 0 Cov.: 32 AF XY: 0.00106 AC XY: 79 AN XY: 74496

Gnomad4 AFR AF: 0.000289

Gnomad4 AMR AF: 0.000131

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00309

Gnomad4 SAS AF: 0.0131

Gnomad4 FIN AF: 0.00141

Gnomad4 NFE AF: 0.000132

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000347 Hom.: 0

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Myopathy, proximal, and ophthalmoplegia Benign:3

Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Apr 20, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Likely benign, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Apr 06, 2022	- -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Dec 07, 2023	- -

MYH2-related disorder Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 28, 2023

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Jul 01, 2023

MYH2: BP4, BP7, BS1, BS2 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.016
DANN	Benign	0.39

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: rs200505060; hg19: chr17-10432169;