Genetic Variant MYH6:p.Lys1095Asn (chr14-23392619-C-A) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4BS1_SupportingBS2

The NM_002471.4(MYH6):c.3285G>T(p.Lys1095Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000649 in 1,385,782 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: not found (cov: 25)

Exomes 𝑓: 0.0000065 ( 0 hom. )

Consequence

MYH6
NM_002471.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.308

Variant links:

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]

MYH6 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.37992206).

BS1

Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.00000649 (9/1385782) while in subpopulation MID AF= 0.00145 (8/5536). AF 95% confidence interval is 0.000718. There are 0 homozygotes in gnomad4_exome. There are 7 alleles in male gnomad4_exome subpopulation. Median coverage is 35. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAdExome4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH6	NM_002471.4 link	c.3285G>T	p.Lys1095Asn	missense_variant	Exon 25 of 39	ENST00000405093.9	NP_002462.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH6	ENST00000405093.9 link	c.3285G>T	p.Lys1095Asn	missense_variant	Exon 25 of 39	5	NM_002471.4	ENSP00000386041.3		P13533

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000649

AC:

AN:

1385782

Hom.:

Cov.:

AF XY:

0.0000101

AC XY:

AN XY:

690086

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000177

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:2

Mar 18, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.Lys1095Asn variant in MYH6 has not been previously reported in individuals with cardiomyopathy or in large population studies. Computational prediction to ols and conservation analysis do not provide strong support for or against an im pact to the protein. In summary, the clinical significance of the p.Lys1095Asn v ariant is uncertain. -

Jul 10, 2015

Genomic Diagnostic Laboratory, Division of Genomic Diagnostics, Children's Hospital of Philadelphia

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.62

BayesDel_addAF

Benign

-0.0058

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.68

D;D

Eigen

Benign

0.15

Eigen_PC

Benign

0.14

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.86

D;.

M_CAP

Uncertain

0.18

MetaRNN

Benign

0.38

T;T

MetaSVM

Uncertain

0.26

MutationAssessor

Uncertain

2.9

M;M

PrimateAI

Pathogenic

0.83

PROVEAN

Uncertain

-3.2

D;D

REVEL

Uncertain

0.45

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.012

D;D

Polyphen

0.31

B;B

Vest4

0.47

MutPred

0.55

Loss of ubiquitination at K1095 (P = 0.0023);Loss of ubiquitination at K1095 (P = 0.0023);

MVP

0.84

MPC

1.0

ClinPred

0.97

GERP RS

2.9

Varity_R

0.66

gMVP

0.61

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