chr11-47342683-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 3P and 9B. PM1PP3BP4_StrongBP6BS1

The NM_000256.3(MYBPC3):c.1519G>A(p.Gly507Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000583 in 1,614,008 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G507V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0017 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00047 ( 1 hom. )

Consequence

MYBPC3
NM_000256.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:16

Conservation

PhyloP100: 7.50

Publications

26 publications found

Variant links:

Genes affected

MYBPC3 (HGNC:7551): (myosin binding protein C3) MYBPC3 encodes the cardiac isoform of myosin-binding protein C. Myosin-binding protein C is a myosin-associated protein found in the cross-bridge-bearing zone (C region) of A bands in striated muscle. MYBPC3 is expressed exclusively in heart muscle and is a key regulator of cardiac contraction. Mutations in this gene are a frequent cause of familial hypertrophic cardiomyopathy. [provided by RefSeq, May 2022]

MYBPC3 Gene-Disease associations (from GenCC):

hypertrophic cardiomyopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
hypertrophic cardiomyopathy 4
Inheritance: AD, AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
left ventricular noncompaction 10
Inheritance: AR, AD Classification: DEFINITIVE, MODERATE, LIMITED Submitted by: Ambry Genetics
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
arrhythmogenic right ventricular cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
atrial fibrillation
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
dilated cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

MYBPC3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

PM1

In a hotspot region, there are 4 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 16 uncertain in NM_000256.3

PP3

Multiple lines of computational evidence support a deleterious effect 9: BayesDel_noAF, Cadd, Dann, Eigen, M_CAP, MutationAssessor, PROVEAN, REVEL, REVEL [when max_spliceai, FATHMM_MKL, MetaRNN, MutationTaster was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.042181134).

BP6

Variant 11-47342683-C-T is Benign according to our data. Variant chr11-47342683-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 42543.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00167 (254/152310) while in subpopulation AFR AF = 0.00524 (218/41566). AF 95% confidence interval is 0.00467. There are 0 homozygotes in GnomAd4. There are 117 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYBPC3	NM_000256.3 link	c.1519G>A	p.Gly507Arg	missense_variant	Exon 17 of 35	ENST00000545968.6	NP_000247.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
MYBPC3	ENST00000545968.6 link	c.1519G>A	p.Gly507Arg	missense_variant	Exon 17 of 35	5	NM_000256.3	ENSP00000442795.1
MYBPC3	ENST00000399249.6 link	c.1519G>A	p.Gly507Arg	missense_variant	Exon 16 of 34	5		ENSP00000382193.2
MYBPC3	ENST00000544791.1 link	n.1519G>A		non_coding_transcript_exon_variant	Exon 17 of 27	5		ENSP00000444259.1

Frequencies

GnomAD3 genomes

AF:

0.00168

AC:

255

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00524

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000523

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00173

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000220

Gnomad OTH

AF:

0.00287

GnomAD2 exomes

AF:

0.000598

AC:

149

AN:

249266

AF XY:

0.000481

show subpopulations

Gnomad AFR exome

AF:

0.00535

Gnomad AMR exome

AF:

0.000377

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00161

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000159

Gnomad OTH exome

AF:

0.000661

GnomAD4 exome

AF:

0.000470

AC:

687

AN:

1461698

Hom.:

Cov.:

AF XY:

0.000441

AC XY:

321

AN XY:

727134

show subpopulations

African (AFR)

AF:

0.00553

AC:

185

AN:

33480

American (AMR)

AF:

0.000335

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00131

AC:

AN:

39700

South Asian (SAS)

AF:

0.000139

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000342

AC:

380

AN:

1111866

Other (OTH)

AF:

0.000696

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.473

Heterozygous variant carriers

124

165

206

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

110

<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:

0.00167

AC:

254

AN:

152310

Hom.:

Cov.:

AF XY:

0.00157

AC XY:

117

AN XY:

74478

show subpopulations

African (AFR)

AF:

0.00524

AC:

218

AN:

41566

American (AMR)

AF:

0.000523

AC:

AN:

15302

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00135

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000221

AC:

AN:

68026

Other (OTH)

AF:

0.00284

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

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:

0.000554

Hom.:

Bravo

AF:

0.00201

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00323

AC:

ESP6500EA

AF:

0.000351

AC:

ExAC

AF:

0.000676

AC:

Asia WGS

AF:

0.00115

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.000178

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:16

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Benign:5

Jan 07, 2014

Eurofins Ntd Llc (ga)

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jun 12, 2015

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

p.Gly507Arg in exon 17 of MYBPC3: This variant is not expected to have clinical significance because it has been identified in 0.6% (54/9808) of African chromos omes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs35736435).

Jul 12, 2017

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Mar 11, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: MYBPC3 c.1519G>A (p.Gly507Arg) results in a non-conservative amino acid change located in the third immunoglobulin subtype 2 domain (IPR003598) of the encoded protein sequence. Four of four in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00058 in 1607036 control chromosomes, predominantly at a frequency of 0.0054 within the African or African-American subpopulation in the gnomAD database (v4.0 dataset), including 1 homozygote. The observed variant frequency within African or African-American control individuals in the gnomAD database is approximately 5.4 fold of the estimated maximal expected allele frequency for a pathogenic variant in MYBPC3 causing Hypertrophic Cardiomyopathy phenotype (0.001), strongly suggesting that the variant is a benign polymorphism. c.1519G>A has been reported in the literature in sequencing studies of individuals affected with and/or undergoing multigene panel testing for Hypertrophic Cardiomyopathy (e.g. Erdmann_2003, Kassem_2013, Lakdawala_2012, Liu_2015). These reports do not provide unequivocal conclusions about association of the variant with Hypertrophic Cardiomyopathy. At-least two co-occurrences with other pathogenic variants have been observed at our laboratory (HCM-MYBPC3 c.2308G>A, p.Asp770Asn; Transthyretin Amylidosis-TTR c.424G>A, p.Val142Ile), providing supporting evidence for a benign role. At least one publication reports experimental evidence evaluating an impact on protein function and demonstrated that the variant didn't destabilize protein structure in an in vitro assay (Suay-Corredera_2021). The following publications have been ascertained in the context of this evaluation (PMID: 23217326, 26332594, 23820649, 22995991, 22763267, 24055113, 12974739, 23233322, 22464770, 26090888, 34097875). ClinVar contains an entry for this variant (Variation ID: 42543). Based on the evidence outlined above, the variant was classified as benign.

not provided

Benign:3

Mar 28, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jun 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

MYBPC3: BS2

Mar 15, 2021

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is associated with the following publications: (PMID: 23299917, 12974739, 21310275, 15519027, 17560888, 23217326, 22763267, 23233322, 25637381, 22995991, 24055113, 23820649, 26332594, 30188508)

Hypertrophic cardiomyopathy 4

Uncertain:1Benign:1

May 28, 2019

Mendelics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Mar 18, 2016

Soonchunhyang University Bucheon Hospital, Soonchunhyang University Medical Center

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:reference population

Cardiomyopathy

Benign:2

Apr 13, 2018

Color Diagnostics, LLC DBA Color Health

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Dec 14, 2018

CHEO Genetics Diagnostic Laboratory, Children's Hospital of Eastern Ontario

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Hypertrophic cardiomyopathy

Benign:2

Oct 01, 2024

All of Us Research Program, National Institutes of Health

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jan 29, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Primary familial hypertrophic cardiomyopathy

Benign:1

Jun 01, 2014

CSER _CC_NCGL, University of Washington

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:research

Cardiovascular phenotype

Benign:1

Jun 01, 2018

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity.

Amyloidosis, hereditary systemic 1

Benign:1

May 20, 2019

Center for Advanced Laboratory Medicine, UC San Diego Health, University of California San Diego

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

CardioboostCm

Uncertain

0.17

BayesDel_addAF

Uncertain

0.057

BayesDel_noAF

Pathogenic

0.31

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.77

D;T;T

Eigen

Pathogenic

0.76

Eigen_PC

Pathogenic

0.67

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Pathogenic

0.99

D;D;D

M_CAP

Pathogenic

0.81

MetaRNN

Benign

0.042

T;T;T

MetaSVM

Uncertain

0.49

MutationAssessor

Pathogenic

3.2

M;.;.

PhyloP100

7.5

PrimateAI

Uncertain

0.65

PROVEAN

Pathogenic

-6.9

D;.;D

REVEL

Pathogenic

0.86

Sift

Pathogenic

0.0

D;.;D

Sift4G

Uncertain

0.0020

D;D;D

Vest4

0.88

ClinPred

0.063

GERP RS

4.6

Varity_R

0.73

gMVP

0.81

Mutation Taster

=2/98

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over