rs387906658

Variant names:

• chr12-101670362-T-C
• rs387906658
• NM_002465.4:c.2566T>C

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The NM_002465.4(MYBPC1):​c.2566T>C​(p.Tyr856His) 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. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MYBPC1 NM_002465.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 5.90
• Publications: 17 publications found

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: Ambry Genetics, Labcorp Genetics (formerly Invitae)
• 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: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• digitotalar dysmorphism

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• lethal congenital contracture syndrome 3

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.889
• PP5: Variant 12-101670362-T-C is Pathogenic according to our data. Variant chr12-101670362-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 29801.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002465.4. 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
	MYBPC1	NM_002465.4	MANE Select	c.2566T>C	p.Tyr856His	missense	Exon 24 of 32	NP_002456.2
	MYBPC1	NM_001404675.1		c.2566T>C	p.Tyr856His	missense	Exon 24 of 30	NP_001391604.1
	MYBPC1	NM_001254718.3		c.2545T>C	p.Tyr849His	missense	Exon 23 of 30	NP_001241647.1	Q00872-6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYBPC1	ENST00000361466.7	TSL:1 MANE Select	c.2566T>C	p.Tyr856His	missense	Exon 24 of 32	ENSP00000354849.2	Q00872-4
	MYBPC1	ENST00000361685.6	TSL:1	c.2566T>C	p.Tyr856His	missense	Exon 24 of 31	ENSP00000354845.2	Q00872-2
	MYBPC1	ENST00000545503.6	TSL:1	c.2491T>C	p.Tyr831His	missense	Exon 22 of 30	ENSP00000440034.2	Q00872-10

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Arthrogryposis, distal, type 1B (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.64
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.10
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.098	T
Eigen	Pathogenic	0.93
Eigen_PC	Pathogenic	0.88
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.076	D
MetaRNN	Pathogenic	0.89	D
MetaSVM	Uncertain	-0.18	T
MutationAssessor	Uncertain	2.5	M
PhyloP100		5.9
PrimateAI	Uncertain	0.76	T
PROVEAN	Uncertain	-3.0	D
REVEL	Uncertain	0.58
Sift	Uncertain	0.010	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.82
MutPred		0.73		Gain of disorder (P = 0.0304)
MVP		0.73
MPC		0.87
ClinPred		0.99	D
GERP RS		5.8
Varity_R		0.44
gMVP		0.76
Mutation Taster		=0/100	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
Splicevardb		2.0
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

Other links and lift over

dbSNP: rs387906658; hg19: chr12-102064140;