14-23390263-T-C

Variant names:

• chr14-23390263-T-C
• NM_002471.4:c.3526A>G

Variant summary

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

The NM_002471.4(MYH6):​c.3526A>G​(p.Met1176Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000695 in 1,439,370 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict 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: 31)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: MYH6 NM_002471.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.74

Genes affected

MYH6 (HGNC:7576): (myosin heavy chain 6) Cardiac muscle myosin is a hexamer consisting of two heavy chain subunits, two light chain subunits, and two regulatory subunits. This gene encodes the alpha heavy chain subunit of cardiac myosin. The gene is located approximately 4kb downstream of the gene encoding the beta heavy chain subunit of cardiac myosin. Mutations in this gene cause familial hypertrophic cardiomyopathy and atrial septal defect 3. [provided by RefSeq, Feb 2017]

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=0.3117603).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH6	NM_002471.4	c.3526A>G	p.Met1176Val	missense_variant	Exon 26 of 39	ENST00000405093.9	NP_002462.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH6	ENST00000405093.9	c.3526A>G	p.Met1176Val	missense_variant	Exon 26 of 39	5	NM_002471.4	ENSP00000386041.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.95e-7 AC: 1 AN: 1439370 Hom.: 0 Cov.: 34 AF XY: 0.00 AC XY: 0 AN XY: 714364

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: 9.10e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.043	T
BayesDel_noAF	Benign	-0.30
CADD	Benign	23
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.44	T;T
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.081
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.82	T;.
M_CAP	Benign	0.081	D
MetaRNN	Benign	0.31	T;T
MetaSVM	Benign	-0.69	T
MutationAssessor	Benign	0.83	L;L
PrimateAI	Uncertain	0.73	T
PROVEAN	Benign	-1.5	N;N
REVEL	Benign	0.23
Sift	Uncertain	0.022	D;D
Sift4G	Benign	0.062	T;T
Polyphen		0.0010	B;B
Vest4		0.37
MutPred		0.48		Gain of methylation at K1175 (P = 0.0173);Gain of methylation at K1175 (P = 0.0173);
MVP		0.64
MPC		1.7
ClinPred		0.38	T
GERP RS		4.2
Varity_R		0.27
gMVP		0.53

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.10		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr14-23859472;