14-23388321-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BS1_SupportingBS2

The NM_002471.4(MYH6):c.4193G>A(p.Arg1398Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000575 in 1,613,122 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1398W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00041 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00059 ( 2 hom. )

Consequence

MYH6
NM_002471.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:14B:1

Conservation

PhyloP100: 7.60

Publications

10 publications found

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 Gene-Disease associations (from GenCC):

MYH-6 related congenital heart defects
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
hypertrophic cardiomyopathy 14
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)
Keppen-Lubinsky syndrome
Inheritance: AD Classification: MODERATE Submitted by: Illumina
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
atrial septal defect 3
Inheritance: AD Classification: LIMITED Submitted by: G2P
dilated cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
hypertrophic cardiomyopathy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

MYH6 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.000414 (63/152222) while in subpopulation SAS AF = 0.000828 (4/4832). AF 95% confidence interval is 0.000585. There are 0 homozygotes in GnomAd4. There are 30 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 63 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002471.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYH6	NM_002471.4	MANE Select	c.4193G>A	p.Arg1398Gln	missense	Exon 30 of 39	NP_002462.2	P13533

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MYH6	ENST00000405093.9	TSL:5 MANE Select	c.4193G>A	p.Arg1398Gln	missense	Exon 30 of 39	ENSP00000386041.3	P13533
MYH6	ENST00000968262.1		c.4226G>A	p.Arg1409Gln	missense	Exon 30 of 39	ENSP00000638321.1
MYH6	ENST00000968257.1		c.4193G>A	p.Arg1398Gln	missense	Exon 30 of 39	ENSP00000638316.1

Frequencies

GnomAD3 genomes

AF:

0.000414

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000828

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000750

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000386

AC:

AN:

251316

AF XY:

0.000471

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000928

Gnomad NFE exome

AF:

0.000589

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000591

AC:

864

AN:

1460900

Hom.:

Cov.:

AF XY:

0.000588

AC XY:

427

AN XY:

726738

show subpopulations

African (AFR)

AF:

0.000120

AC:

AN:

33458

American (AMR)

AF:

0.000157

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.000754

AC:

AN:

86218

European-Finnish (FIN)

AF:

0.0000750

AC:

AN:

53320

Middle Eastern (MID)

AF:

0.000199

AC:

AN:

5030

European-Non Finnish (NFE)

AF:

0.000680

AC:

756

AN:

1112002

Other (OTH)

AF:

0.000431

AC:

AN:

60312

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.463

Heterozygous variant carriers

115

173

230

288

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

104

130

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000414

AC:

AN:

152222

Hom.:

Cov.:

AF XY:

0.000403

AC XY:

AN XY:

74368

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41454

American (AMR)

AF:

0.000196

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.000828

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.0000941

AC:

AN:

10632

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000750

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2094

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000548

Hom.:

Bravo

AF:

0.000382

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000387

AC:

EpiCase

AF:

0.000545

EpiControl

AF:

0.000652

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (9)

not specified (2)

Cardiomyopathy (1)

Cardiovascular phenotype (1)

Hypertrophic cardiomyopathy 14 (1)

MYH6-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.41

BayesDel_addAF

Benign

-0.082

BayesDel_noAF

Uncertain

0.010

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.66

Eigen

Uncertain

0.23

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.93

M_CAP

Pathogenic

0.30

MetaRNN

Uncertain

0.56

MetaSVM

Uncertain

0.17

MutationAssessor

Uncertain

2.2

PhyloP100

7.6

PrimateAI

Pathogenic

0.80

PROVEAN

Uncertain

-2.8

REVEL

Uncertain

0.62

Sift

Uncertain

0.0010

Sift4G

Uncertain

0.056

Polyphen

0.22

Vest4

0.88

MVP

0.73

MPC

0.39

ClinPred

0.14

GERP RS

4.6

Varity_R

0.47

gMVP

0.52

Mutation Taster

=3/97

disease causing

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over