Genetic Variant MYBPC2:c.512+1G>A (chr19-50437522-G-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP3BP6BS2

The NM_004533.4(MYBPC2):c.512+1G>A variant causes a splice donor, intron change. The variant allele was found at a frequency of 0.000312 in 1,610,090 control chromosomes in the GnomAD database, including 4 homozygotes. 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 benign (no stars).

Frequency

Genomes: 𝑓 0.0017 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00017 ( 2 hom. )

Consequence

MYBPC2
NM_004533.4 splice_donor, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Likely benign no assertion criteria provided B:1

Conservation

PhyloP100: 4.88

Variant links:

Genes affected

MYBPC2 (HGNC:7550): (myosin binding protein C2) This gene encodes a member of the myosin-binding protein C family. This family includes the fast-, slow- and cardiac-type isoforms, each of which is a myosin-associated protein found in the cross-bridge-bearing zone (C region) of A bands in striated muscle. The protein encoded by this locus is referred to as the fast-type isoform. Mutations in the related but distinct genes encoding the slow-type and cardiac-type isoforms have been associated with distal arthrogryposis, type 1 and hypertrophic cardiomyopathy, respectively. [provided by RefSeq, Jul 2012]

MYBPC2 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PP3

Multiple lines of computational evidence support a deleterious effect 5: Cadd, dbscSNV1_ADA, dbscSNV1_RF, max_spliceai, Eigen [when BayesDel_addAF, BayesDel_noAF, MutationTaster was below the threshold]

BP6

Variant 19-50437522-G-A is Benign according to our data. Variant chr19-50437522-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 3053488.Status of the report is no_assertion_criteria_provided, 0 stars.

BS2

High Homozygotes in GnomAd4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYBPC2	NM_004533.4 link	c.512+1G>A		splice_donor_variant, intron_variant	Intron 6 of 27	ENST00000357701.6	NP_004524.3	Q14324A0A140VJQ0

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYBPC2	ENST00000357701.6 link	c.512+1G>A		splice_donor_variant, intron_variant	Intron 6 of 27	1	NM_004533.4	ENSP00000350332.4		Q14324

Frequencies

GnomAD3 genomes

AF:

0.00168

AC:

255

AN:

152114

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00565

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000981

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.000430

AC:

104

AN:

241766

Hom.:

AF XY:

0.000290

AC XY:

AN XY:

130980

show subpopulations

Gnomad AFR exome

AF:

0.00599

Gnomad AMR exome

AF:

0.000208

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000640

Gnomad OTH exome

AF:

0.000169

GnomAD4 exome

AF:

0.000170

AC:

248

AN:

1457858

Hom.:

Cov.:

AF XY:

0.000137

AC XY:

AN XY:

724784

show subpopulations

Gnomad4 AFR exome

AF:

0.00574

Gnomad4 AMR exome

AF:

0.000250

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000234

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000180

Gnomad4 OTH exome

AF:

0.000365

GnomAD4 genome

AF:

0.00168

AC:

255

AN:

152232

Hom.:

Cov.:

AF XY:

0.00149

AC XY:

111

AN XY:

74418

show subpopulations

Gnomad4 AFR

AF:

0.00564

Gnomad4 AMR

AF:

0.000980

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.000947

Alfa

AF:

0.000339

Hom.:

Bravo

AF:

0.00183

ESP6500AA

AF:

0.00655

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000505

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

MYBPC2-related disorder

Benign:1

Apr 28, 2022

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.10

CADD

Pathogenic

DANN

Uncertain

0.98

Eigen

Pathogenic

0.74

Eigen_PC

Uncertain

0.48

FATHMM_MKL

Uncertain

0.85

GERP RS

3.5

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.75

SpliceAI score (max)

0.98

Details are displayed if max score is > 0.2

DS_DL_spliceai

0.98

Position offset: -1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over