dbSNP rs374630007: MYBPC3:p.Arg17Leu (chr11-47351481-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000256.3(MYBPC3):c.50G>T(p.Arg17Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000139 in 1,438,262 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R17W) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

MYBPC3
NM_000256.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.63

Publications

5 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: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYBPC3	NM_000256.3 link	c.50G>T	p.Arg17Leu	missense_variant	Exon 2 of 35	ENST00000545968.6	NP_000247.2	Q14896-1A5YM48

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYBPC3	ENST00000545968.6 link	c.50G>T	p.Arg17Leu	missense_variant	Exon 2 of 35	5	NM_000256.3	ENSP00000442795.1	Q14896-1
MYBPC3	ENST00000399249.6 link	c.50G>T	p.Arg17Leu	missense_variant	Exon 2 of 34	5		ENSP00000382193.2	A8MXZ9
MYBPC3	ENST00000544791.1 link	n.50G>T		non_coding_transcript_exon_variant	Exon 2 of 27	5		ENSP00000444259.1	F5GZR4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000127

AC:

AN:

235814

AF XY:

0.00000776

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000568

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000189

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000139

AC:

AN:

1438262

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

710818

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33072

American (AMR)

AF:

0.00

AC:

AN:

44002

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25676

East Asian (EAS)

AF:

0.0000256

AC:

AN:

39000

South Asian (SAS)

AF:

0.00

AC:

AN:

85020

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51326

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5702

European-Non Finnish (NFE)

AF:

9.13e-7

AC:

AN:

1095232

Other (OTH)

AF:

0.00

AC:

AN:

59232

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000166

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.31

CardioboostCm

Benign

0.037

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Benign

-0.22

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.28

T;T;T

Eigen

Uncertain

0.22

Eigen_PC

Benign

0.19

FATHMM_MKL

Uncertain

0.91

LIST_S2

Uncertain

0.93

D;D;D

M_CAP

Pathogenic

0.41

MetaRNN

Uncertain

0.53

D;D;D

MetaSVM

Benign

-0.59

MutationAssessor

Uncertain

2.5

M;.;.

PhyloP100

4.6

PrimateAI

Benign

0.47

PROVEAN

Benign

-2.2

N;N;N

REVEL

Uncertain

0.30

Sift

Uncertain

0.0060

D;D;D

Sift4G

Uncertain

0.014

D;D;D

Polyphen

0.85

P;.;.

Vest4

0.49

MutPred

0.56

Loss of MoRF binding (P = 0.0035);Loss of MoRF binding (P = 0.0035);Loss of MoRF binding (P = 0.0035);

MVP

0.86

MPC

0.72

ClinPred

0.87

GERP RS

3.3

Varity_R

0.29

gMVP

0.41

Mutation Taster

=86/14

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over