NM_001276345.2:c.811-33C>T

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_001276345.2(TNNT2):c.811-33C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.128 in 1,568,964 control chromosomes in the GnomAD database, including 19,177 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.22 ( 5513 hom., cov: 32)

Exomes 𝑓: 0.12 ( 13664 hom. )

Consequence

TNNT2
NM_001276345.2 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: -0.984

Publications

12 publications found

Variant links:

Genes affected

TNNT2 (HGNC:11949): (troponin T2, cardiac type) This gene encodes the cardiac isoform of troponin T. The encoded protein is the tropomyosin-binding subunit of the troponin complex, which is located on the thin filament of striated muscles and regulates muscle contraction in response to alterations in intracellular calcium ion concentration. Mutations in this gene have been associated with familial hypertrophic cardiomyopathy as well as with dilated cardiomyopathy. [provided by RefSeq, May 2022]

TNNT2 Gene-Disease associations (from GenCC):

dilated cardiomyopathy
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
dilated cardiomyopathy 1D
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
hypertrophic cardiomyopathy 2
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
hypertrophic cardiomyopathy 3
Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
cardiomyopathy, familial restrictive, 3
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
hypertrophic cardiomyopathy
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial isolated restrictive cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
left ventricular noncompaction
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
cardiomyopathy
Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics
arrhythmogenic right ventricular cardiomyopathy
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

TNNT2 links:

ENSG00000286600 (HGNC:):

ENSG00000286600 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 (BayesDel_noAF=-0.87).

BP6

Variant 1-201359696-G-A is Benign according to our data. Variant chr1-201359696-G-A is described in ClinVar as Benign. ClinVar VariationId is 256846.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.468 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001276345.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
TNNT2	NM_001276345.2	MANE Select	c.811-33C>T	intron	N/A	NP_001263274.1	P45379-1
TNNT2	NM_000364.4		c.802-33C>T	intron	N/A	NP_000355.2
TNNT2	NM_001406723.1		c.802-33C>T	intron	N/A	NP_001393652.1	P45379-10

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
TNNT2	ENST00000656932.1	MANE Select	c.811-33C>T	intron	N/A	ENSP00000499593.1	P45379-1
TNNT2	ENST00000367322.6	TSL:1	c.769-33C>T	intron	N/A	ENSP00000356291.2	A0A499FJM7
TNNT2	ENST00000367320.6	TSL:1	c.682-33C>T	intron	N/A	ENSP00000356289.2	P45379-12

Frequencies

GnomAD3 genomes

AF:

0.217

AC:

32943

AN:

152004

Hom.:

5485

Cov.:

show subpopulations

Gnomad AFR

AF:

0.472

Gnomad AMI

AF:

0.107

Gnomad AMR

AF:

0.132

Gnomad ASJ

AF:

0.130

Gnomad EAS

AF:

0.261

Gnomad SAS

AF:

0.217

Gnomad FIN

AF:

0.123

Gnomad MID

AF:

0.250

Gnomad NFE

AF:

0.0982

Gnomad OTH

AF:

0.192

GnomAD2 exomes

AF:

0.155

AC:

28841

AN:

186038

AF XY:

0.153

show subpopulations

Gnomad AFR exome

AF:

0.486

Gnomad AMR exome

AF:

0.0989

Gnomad ASJ exome

AF:

0.138

Gnomad EAS exome

AF:

0.271

Gnomad FIN exome

AF:

0.132

Gnomad NFE exome

AF:

0.0989

Gnomad OTH exome

AF:

0.150

GnomAD4 exome

AF:

0.118

AC:

167727

AN:

1416840

Hom.:

13664

Cov.:

AF XY:

0.120

AC XY:

84189

AN XY:

700844

show subpopulations

African (AFR)

AF:

0.492

AC:

15852

AN:

32214

American (AMR)

AF:

0.102

AC:

4011

AN:

39364

Ashkenazi Jewish (ASJ)

AF:

0.132

AC:

3360

AN:

25518

East Asian (EAS)

AF:

0.235

AC:

8811

AN:

37466

South Asian (SAS)

AF:

0.203

AC:

16400

AN:

80968

European-Finnish (FIN)

AF:

0.137

AC:

6932

AN:

50652

Middle Eastern (MID)

AF:

0.192

AC:

1093

AN:

5706

European-Non Finnish (NFE)

AF:

0.0945

AC:

102650

AN:

1086274

Other (OTH)

AF:

0.147

AC:

8618

AN:

58678

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.462

Heterozygous variant carriers

6850

13701

20551

27402

34252

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

4096

8192

12288

16384

20480

<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:

0.217

AC:

33016

AN:

152124

Hom.:

5513

Cov.:

AF XY:

0.218

AC XY:

16247

AN XY:

74376

show subpopulations

African (AFR)

AF:

0.473

AC:

19606

AN:

41442

American (AMR)

AF:

0.132

AC:

2017

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.130

AC:

452

AN:

3472

East Asian (EAS)

AF:

0.260

AC:

1347

AN:

5172

South Asian (SAS)

AF:

0.216

AC:

1040

AN:

4814

European-Finnish (FIN)

AF:

0.123

AC:

1305

AN:

10612

Middle Eastern (MID)

AF:

0.252

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0982

AC:

6675

AN:

67998

Other (OTH)

AF:

0.191

AC:

402

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

1126

2252

3378

4504

5630

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

314

628

942

1256

1570

<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:

0.127

Hom.:

3235

Bravo

AF:

0.228

Asia WGS

AF:

0.263

AC:

914

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Cardiomyopathy, familial restrictive, 3 (1)

Dilated cardiomyopathy 1D (1)

Hypertrophic cardiomyopathy 2 (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.87

CADD

Benign

0.038

(source)

DANN

Benign

0.77

PhyloP100

-0.98

Mutation Taster

=100/0

polymorphism (auto)

(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