rs376395543

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1_ModeratePP5_Very_Strong

The NM_000256.3(MYBPC3):c.26-2A>G variant causes a splice acceptor, intron change. The variant allele was found at a frequency of 0.0000392 in 1,581,032 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000041 ( 0 hom. )

Consequence

MYBPC3
NM_000256.3 splice_acceptor, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:33

Conservation

PhyloP100: 5.77

Publications

12 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: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
left ventricular noncompaction 10
Inheritance: AD, AR 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
congenital heart disease
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
dilated cardiomyopathy
Inheritance: AR, AD Classification: LIMITED Submitted by: ClinGen

MYBPC3 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 10 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.06980392 fraction of the gene. Cryptic splice site detected, with MaxEntScore 6.9, offset of 6, new splice context is: acctggcccttcggtctcAGctt. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.

PP5

Variant 11-47351507-T-C is Pathogenic according to our data. Variant chr11-47351507-T-C is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 42644.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000256.3. 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
	MYBPC3	NM_000256.3	MANE Select	c.26-2A>G		splice_acceptor intron	N/A	NP_000247.2	Q14896-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
MYBPC3	ENST00000545968.6	TSL:5 MANE Select	c.26-2A>G	splice_acceptor intron	N/A	ENSP00000442795.1	Q14896-1
MYBPC3	ENST00000399249.6	TSL:5	c.26-2A>G	splice_acceptor intron	N/A	ENSP00000382193.2	A8MXZ9
MYBPC3	ENST00000544791.1	TSL:5	n.26-2A>G	splice_acceptor intron	N/A	ENSP00000444259.1	F5GZR4

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000268

AC:

AN:

223986

AF XY:

0.0000409

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000306

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000498

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000413

AC:

AN:

1428814

Hom.:

Cov.:

AF XY:

0.0000454

AC XY:

AN XY:

705224

show subpopulations

African (AFR)

AF:

0.0000304

AC:

AN:

32948

American (AMR)

AF:

0.0000463

AC:

AN:

43166

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24830

East Asian (EAS)

AF:

0.00

AC:

AN:

38974

South Asian (SAS)

AF:

0.00

AC:

AN:

83180

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50726

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5628

European-Non Finnish (NFE)

AF:

0.0000504

AC:

AN:

1090474

Other (OTH)

AF:

0.0000170

AC:

AN:

58888

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.514

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

AF:

0.0000197

AC:

AN:

152218

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74374

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41468

American (AMR)

AF:

0.00

AC:

AN:

15284

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68024

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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:

0.000215

Hom.:

Bravo

AF:

0.0000113

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000120

AC:

ExAC

AF:

0.0000332

AC:

ClinVar

ClinVar submissions

Significance:Pathogenic/Likely pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (11)

Hypertrophic cardiomyopathy (5)

Hypertrophic cardiomyopathy 4 (5)

Hypertrophic cardiomyopathy 4;C3715165:Left ventricular noncompaction 10 (3)

Cardiomyopathy (2)

Left ventricular noncompaction 10 (2)

MYBPC3-related disorder (2)

Cardiovascular phenotype (1)

Intellectual disability (1)

Primary familial hypertrophic cardiomyopathy (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.0012

BayesDel_noAF

Uncertain

-0.060

CADD

Pathogenic

(source)

DANN

Uncertain

0.98

Eigen

Pathogenic

0.85

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Uncertain

0.95

PhyloP100

5.8

GERP RS

4.3

Mutation Taster

=0/100

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.91

SpliceAI score (max)

0.95

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.89

Position offset: -8

DS_AL_spliceai

0.95

Position offset: -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