17-10547728-C-T

Variant names:

• chr17-10547728-C-T
• rs767472238
• NM_017534.6:c.193G>A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_017534.6(MYH2):​c.193G>A​(p.Glu65Lys) 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 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MYH2 NM_017534.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.72

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]

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]

ACMG classification

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=0.26992112).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH2	NM_017534.6	c.193G>A	p.Glu65Lys	missense_variant	Exon 3 of 40	ENST00000245503.10	NP_060004.3
MYH2	NM_001100112.2	c.193G>A	p.Glu65Lys	missense_variant	Exon 3 of 40		NP_001093582.1
MYHAS	NR_125367.1	n.168-19809C>T		intron_variant	Intron 2 of 10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH2	ENST00000245503.10	c.193G>A	p.Glu65Lys	missense_variant	Exon 3 of 40	1	NM_017534.6	ENSP00000245503.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251418 Hom.: 0 AF XY: 0.00000736 AC XY: 1 AN XY: 135870

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461886 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Uncertain	0.051	T
BayesDel_noAF	Benign	-0.16
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.21	.;T;T;.;.
Eigen	Benign	-0.12
Eigen_PC	Benign	0.065
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Uncertain	0.92	.;.;D;D;D
M_CAP	Benign	0.034	D
MetaRNN	Benign	0.27	T;T;T;T;T
MetaSVM	Benign	-0.50	T
MutationAssessor	Benign	1.9	L;L;L;L;.
PrimateAI	Uncertain	0.63	T
PROVEAN	Benign	-2.2	N;N;N;.;D
REVEL	Uncertain	0.36
Sift	Uncertain	0.020	D;T;T;.;D
Sift4G	Benign	0.31	T;T;T;T;.
Polyphen		0.0030	.;B;B;.;.
Vest4		0.46
MutPred		0.41		Gain of MoRF binding (P = 0.0052);Gain of MoRF binding (P = 0.0052);Gain of MoRF binding (P = 0.0052);Gain of MoRF binding (P = 0.0052);Gain of MoRF binding (P = 0.0052);
MVP		0.76
MPC		1.2
ClinPred		0.30	T
GERP RS		5.7
Varity_R		0.26
gMVP		0.51

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: rs767472238; hg19: chr17-10451045;