Genetic Variant NM_000256.3:c.479G>T (chr11-47350040-C-A) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP3

The NM_000256.3(MYBPC3):c.479G>T(p.Arg160Leu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 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. R160W) has been classified as Benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

MYBPC3
NM_000256.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.23

Publications

1 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 5 ACMG points.

PM1

In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 4 benign, 20 uncertain in NM_000256.3

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.778

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYBPC3	NM_000256.3 link	c.479G>T	p.Arg160Leu	missense_variant	Exon 4 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.479G>T	p.Arg160Leu	missense_variant	Exon 4 of 35	5	NM_000256.3	ENSP00000442795.1	Q14896-1
MYBPC3	ENST00000399249.6 link	c.479G>T	p.Arg160Leu	missense_variant	Exon 4 of 34	5		ENSP00000382193.2	A8MXZ9
MYBPC3	ENST00000544791.1 link	n.479G>T		non_coding_transcript_exon_variant	Exon 4 of 27	5		ENSP00000444259.1	F5GZR4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000578

AC:

AN:

172984

AF XY:

0.0000108

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000141

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1410866

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

697142

African (AFR)

AF:

0.00

AC:

AN:

32104

American (AMR)

AF:

0.00

AC:

AN:

37358

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25318

East Asian (EAS)

AF:

0.00

AC:

AN:

36562

South Asian (SAS)

AF:

0.00

AC:

AN:

79978

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49914

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5674

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1085514

Other (OTH)

AF:

0.00

AC:

AN:

58444

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.50

CardioboostCm

Uncertain

0.56

BayesDel_addAF

Uncertain

0.066

BayesDel_noAF

Benign

-0.14

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.60

D;T;T

Eigen

Uncertain

0.30

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

D;D;D

M_CAP

Pathogenic

0.31

MetaRNN

Pathogenic

0.78

D;D;D

MetaSVM

Benign

-0.31

MutationAssessor

Benign

1.9

L;.;.

PhyloP100

5.2

PrimateAI

Uncertain

0.63

PROVEAN

Uncertain

-4.1

D;D;D

REVEL

Uncertain

0.46

Sift

Uncertain

0.0030

D;D;D

Sift4G

Uncertain

0.0030

D;D;D

Polyphen

0.81

P;.;.

Vest4

0.72

MutPred

0.73

Loss of disorder (P = 0.0809);Loss of disorder (P = 0.0809);Loss of disorder (P = 0.0809);

MVP

0.83

MPC

0.88

ClinPred

0.98

GERP RS

3.5

Varity_R

0.54

gMVP

0.71

Mutation Taster

=72/28

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over