14-23390180-G-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_002471.4(MYH6):c.3609C>G(p.Ala1203Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00165 in 1,607,540 control chromosomes in the GnomAD database, including 43 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. A1203A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0084 ( 23 hom., cov: 31)

Exomes 𝑓: 0.00095 ( 20 hom. )

Consequence

MYH6
NM_002471.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: -1.52

Publications

2 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: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.91).

BP6

Variant 14-23390180-G-C is Benign according to our data. Variant chr14-23390180-G-C is described in ClinVar as Benign. ClinVar VariationId is 44487.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-1.52 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00843 (1279/151720) while in subpopulation AFR AF = 0.0295 (1219/41320). AF 95% confidence interval is 0.0281. There are 23 homozygotes in GnomAd4. There are 590 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High AC in GnomAd4 at 1279 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.3609C>G	p.Ala1203Ala	synonymous	Exon 26 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.3609C>G	p.Ala1203Ala	synonymous	Exon 26 of 39	ENSP00000386041.3	P13533
MYH6	ENST00000968262.1		c.3642C>G	p.Ala1214Ala	synonymous	Exon 26 of 39	ENSP00000638321.1
MYH6	ENST00000968257.1		c.3609C>G	p.Ala1203Ala	synonymous	Exon 26 of 39	ENSP00000638316.1

Frequencies

GnomAD3 genomes

AF:

0.00842

AC:

1276

AN:

151604

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0295

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00269

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000884

Gnomad OTH

AF:

0.00577

GnomAD2 exomes

AF:

0.00242

AC:

599

AN:

247846

AF XY:

0.00165

show subpopulations

Gnomad AFR exome

AF:

0.0319

Gnomad AMR exome

AF:

0.00209

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000900

Gnomad OTH exome

AF:

0.00165

GnomAD4 exome

AF:

0.000948

AC:

1380

AN:

1455820

Hom.:

Cov.:

AF XY:

0.000761

AC XY:

551

AN XY:

723602

show subpopulations

African (AFR)

AF:

0.0318

AC:

1059

AN:

33342

American (AMR)

AF:

0.00199

AC:

AN:

44646

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26110

East Asian (EAS)

AF:

0.00

AC:

AN:

39620

South Asian (SAS)

AF:

0.000128

AC:

AN:

86114

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53320

Middle Eastern (MID)

AF:

0.00191

AC:

AN:

4182

European-Non Finnish (NFE)

AF:

0.0000893

AC:

AN:

1108438

Other (OTH)

AF:

0.00190

AC:

114

AN:

60048

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

183

275

366

458

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

108

144

180

<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:

0.00843

AC:

1279

AN:

151720

Hom.:

Cov.:

AF XY:

0.00796

AC XY:

590

AN XY:

74136

show subpopulations

African (AFR)

AF:

0.0295

AC:

1219

AN:

41320

American (AMR)

AF:

0.00269

AC:

AN:

15242

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5160

South Asian (SAS)

AF:

0.000209

AC:

AN:

4776

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10574

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.0000884

AC:

AN:

67882

Other (OTH)

AF:

0.00571

AC:

AN:

2100

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

120

181

241

301

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.000262

Hom.:

Bravo

AF:

0.00970

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (4)

not specified (3)

Cardiomyopathy (1)

Cardiovascular phenotype (1)

Hypertrophic cardiomyopathy 14 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.91

CADD

Benign

3.3

(source)

DANN

Benign

0.84

PhyloP100

-1.5

Mutation Taster

=96/4

polymorphism

(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

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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