rs374655743

chr4-119158118-C-Gchr4-119158118-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_016599.5(MYOZ2):c.343C>G(p.Arg115Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R115Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 31)
• Consequence: MYOZ2 NM_016599.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.81

Genes affected

MYOZ2 (HGNC:1330): (myozenin 2) The protein encoded by this gene belongs to a family of sarcomeric proteins that bind to calcineurin, a phosphatase involved in calcium-dependent signal transduction in diverse cell types. These family members tether calcineurin to alpha-actinin at the z-line of the sarcomere of cardiac and skeletal muscle cells, and thus they are important for calcineurin signaling. Mutations in this gene cause cardiomyopathy familial hypertrophic type 16, a hereditary heart disorder. [provided by RefSeq, Aug 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.20408201).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MYOZ2	NM_016599.5	c.343C>G	p.Arg115Gly	missense_variant	4/6	ENST00000307128.6
MYOZ2	XM_006714234.5	c.343C>G	p.Arg115Gly	missense_variant	4/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MYOZ2	ENST00000307128.6	c.343C>G	p.Arg115Gly	missense_variant	4/6	1	NM_016599.5	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.50
BayesDel_addAF	Benign	-0.056	T
BayesDel_noAF	Benign	-0.32
Cadd	Benign	19
Dann	Uncertain	1.0
DEOGEN2	Benign	0.081	T
Eigen	Benign	-0.28
Eigen_PC	Benign	-0.079
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.022	T
MetaRNN	Benign	0.20	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.2	L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	-0.70	N
REVEL	Benign	0.073
Sift	Benign	0.097	T
Sift4G	Benign	0.22	T
Polyphen		0.042	B
Vest4		0.46
MutPred		0.35		Loss of solvent accessibility (P = 0.0044);
MVP		0.67
MPC		0.55
ClinPred		0.93	D
GERP RS		4.7
Varity_R		0.23
gMVP		0.39

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs374655743; hg19: chr4-120079273;