12-101629446-T-C

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_002465.4(MYBPC1):c.191T>C(p.Val64Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000692 in 1,612,232 control chromosomes in the GnomAD database, including 10 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★). Synonymous variant affecting the same amino acid position (i.e. V64V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0036 ( 4 hom., cov: 32)

Exomes 𝑓: 0.00038 ( 6 hom. )

Consequence

MYBPC1
NM_002465.4 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 6.61

Publications

3 publications found

Variant links:

Genes affected

MYBPC1 (HGNC:7549): (myosin binding protein C1) This gene encodes a member of the myosin-binding protein C family. Myosin-binding protein C family members are myosin-associated proteins found in the cross-bridge-bearing zone (C region) of A bands in striated muscle. The encoded protein is the slow skeletal muscle isoform of myosin-binding protein C and plays an important role in muscle contraction by recruiting muscle-type creatine kinase to myosin filaments. Mutations in this gene are associated with distal arthrogryposis type I. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

MYBPC1 Gene-Disease associations (from GenCC):

arthrogryposis, distal, type 1B
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
myopathy, congenital, with tremor
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
lethal congenital contracture syndrome 4
Inheritance: AR Classification: STRONG, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
digitotalar dysmorphism
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
lethal congenital contracture syndrome 3
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

MYBPC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.005803317).

BP6

Variant 12-101629446-T-C is Benign according to our data. Variant chr12-101629446-T-C is described in ClinVar as Benign. ClinVar VariationId is 258660.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00365 (555/152160) while in subpopulation AFR AF = 0.0128 (530/41486). AF 95% confidence interval is 0.0119. There are 4 homozygotes in GnomAd4. There are 267 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 4 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYBPC1	NM_002465.4 link	c.191T>C	p.Val64Ala	missense_variant	Exon 6 of 32	ENST00000361466.7	NP_002456.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYBPC1	ENST00000361466.7 link	c.191T>C	p.Val64Ala	missense_variant	Exon 6 of 32	1	NM_002465.4	ENSP00000354849.2
MYBPC1	ENST00000551300.5 link	c.-182T>C		5_prime_UTR_variant	Exon 7 of 32	1		ENSP00000447116.1

Frequencies

GnomAD3 genomes

AF:

0.00365

AC:

555

AN:

152042

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0128

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00105

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:

0.0000147

Gnomad OTH

AF:

0.00382

GnomAD2 exomes

AF:

0.000871

AC:

219

AN:

251354

AF XY:

0.000537

show subpopulations

Gnomad AFR exome

AF:

0.0126

Gnomad AMR exome

AF:

0.000405

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000384

AC:

560

AN:

1460072

Hom.:

Cov.:

AF XY:

0.000304

AC XY:

221

AN XY:

726514

show subpopulations

African (AFR)

AF:

0.0147

AC:

493

AN:

33428

American (AMR)

AF:

0.000470

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86214

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53340

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000450

AC:

AN:

1110434

Other (OTH)

AF:

0.000630

AC:

AN:

60338

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

105

131

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.00365

AC:

555

AN:

152160

Hom.:

Cov.:

AF XY:

0.00359

AC XY:

267

AN XY:

74404

show subpopulations

African (AFR)

AF:

0.0128

AC:

530

AN:

41486

American (AMR)

AF:

0.00105

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5174

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68008

Other (OTH)

AF:

0.00378

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

120

150

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.000696

Hom.:

Bravo

AF:

0.00415

ESP6500AA

AF:

0.0116

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00107

AC:

130

ClinVar

Significance: Benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Jul 11, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Breakthrough Genomics, Breakthrough Genomics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Arthrogryposis, distal, type 1B

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.087

BayesDel_addAF

Benign

-0.43

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Benign

0.60

DEOGEN2

Benign

0.0094

.;.;.;.;.;T;.;.;.;.;.;T

Eigen

Benign

-0.67

Eigen_PC

Benign

-0.49

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.61

T;T;T;T;T;T;T;T;T;T;T;T

MetaRNN

Benign

0.0058

T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

.;N;.;.;.;.;N;N;N;.;.;N

PhyloP100

6.6

PrimateAI

Benign

0.48

PROVEAN

Benign

1.1

N;N;N;N;N;N;N;N;N;N;N;N

REVEL

Benign

0.15

Sift

Benign

1.0

T;T;T;T;T;T;T;T;T;T;T;T

Sift4G

Benign

0.89

T;T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.0, 0.0020

.;.;.;.;B;B;B;.;.;.;.;B

Vest4

0.30

MVP

0.068

MPC

0.050

ClinPred

0.022

GERP RS

5.3

Varity_R

0.033

gMVP

0.19

Mutation Taster

=286/14

polymorphism

(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