17-39665391-C-T

Variant names:

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_003673.4(TCAP):c.32C>T(p.Ser11Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000224 in 1,613,642 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S11W) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0010 ( 2 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

TCAP
NM_003673.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:11

Conservation

PhyloP100: 0.702

Publications

8 publications found

Variant links:

Genes affected

TCAP (HGNC:11610): (titin-cap) Sarcomere assembly is regulated by the muscle protein titin. Titin is a giant elastic protein with kinase activity that extends half the length of a sarcomere. It serves as a scaffold to which myofibrils and other muscle related proteins are attached. This gene encodes a protein found in striated and cardiac muscle that binds to the titin Z1-Z2 domains and is a substrate of titin kinase, interactions thought to be critical to sarcomere assembly. Mutations in this gene are associated with limb-girdle muscular dystrophy type 2G. [provided by RefSeq, Jul 2008]

TCAP Gene-Disease associations (from GenCC):

autosomal recessive limb-girdle muscular dystrophy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hypertrophic cardiomyopathy 25
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
autosomal recessive limb-girdle muscular dystrophy type 2G
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
dilated cardiomyopathy
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
hypertrophic cardiomyopathy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

TCAP links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -13 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.010478735).

BP6

Variant 17-39665391-C-T is Benign according to our data. Variant chr17-39665391-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 177939.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00105 (159/152134) while in subpopulation AFR AF = 0.00362 (150/41488). AF 95% confidence interval is 0.00314. There are 2 homozygotes in GnomAd4. There are 73 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 2 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003673.4. 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
	TCAP	NM_003673.4	MANE Select	c.32C>T	p.Ser11Leu	missense	Exon 1 of 2	NP_003664.1	A2TDC0

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TCAP	ENST00000309889.3	TSL:1 MANE Select	c.32C>T	p.Ser11Leu	missense	Exon 1 of 2	ENSP00000312624.2	O15273
	TCAP	ENST00000578283.1	TSL:5	c.32C>T	p.Ser11Leu	missense	Exon 1 of 3	ENSP00000462787.1	J3KT40

Frequencies

GnomAD3 genomes

AF:

0.00104

AC:

158

AN:

152016

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00360

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.000958

GnomAD2 exomes

AF:

0.000275

AC:

AN:

251088

AF XY:

0.000184

show subpopulations

Gnomad AFR exome

AF:

0.00327

Gnomad AMR exome

AF:

0.000174

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000793

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000139

AC:

203

AN:

1461508

Hom.:

Cov.:

AF XY:

0.000138

AC XY:

100

AN XY:

727070

show subpopulations

African (AFR)

AF:

0.00373

AC:

125

AN:

33480

American (AMR)

AF:

0.000179

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53124

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.0000396

AC:

AN:

1111962

Other (OTH)

AF:

0.000381

AC:

AN:

60380

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.459

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:

0.00105

AC:

159

AN:

152134

Hom.:

Cov.:

AF XY:

0.000982

AC XY:

AN XY:

74360

show subpopulations

African (AFR)

AF:

0.00362

AC:

150

AN:

41488

American (AMR)

AF:

0.000262

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4810

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

67986

Other (OTH)

AF:

0.000948

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.491

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:

0.000290

Hom.:

Bravo

AF:

0.00117

ESP6500AA

AF:

0.00477

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000379

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (5)

not provided (4)

Autosomal recessive limb-girdle muscular dystrophy type 2G (1)

Cardiomyopathy (1)

Cardiovascular phenotype (1)

Hypertrophic cardiomyopathy 25 (1)

Primary familial hypertrophic cardiomyopathy;C4225408:Hypertrophic cardiomyopathy 25 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Uncertain

-0.040

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Uncertain

0.78

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.19

FATHMM_MKL

Benign

0.20

LIST_S2

Uncertain

0.86

M_CAP

Benign

0.070

MetaRNN

Benign

0.010

MetaSVM

Benign

-0.45

MutationAssessor

Benign

1.9

PhyloP100

0.70

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-3.1

REVEL

Uncertain

0.29

Sift

Benign

0.11

Sift4G

Benign

0.17

Polyphen

0.34

Vest4

0.15

MVP

0.93

MPC

0.39

ClinPred

0.040

GERP RS

4.5

PromoterAI

-0.083

Neutral

(source)

Varity_R

0.26

gMVP

0.30

Mutation Taster

=69/31

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over