Variant 11-1923624-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBP6_Very_Strong

The NM_006757.4(TNNT3):c.49+52C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0088 ( 13 hom., cov: 26)

Exomes 𝑓: 0.0010 ( 27 hom. )

Failed GnomAD Quality Control

Consequence

TNNT3
NM_006757.4 intron

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: 0.635

Variant links:

Genes affected

TNNT3 (HGNC:11950): (troponin T3, fast skeletal type) The binding of Ca(2+) to the trimeric troponin complex initiates the process of muscle contraction. Increased Ca(2+) concentrations produce a conformational change in the troponin complex that is transmitted to tropomyosin dimers situated along actin filaments. The altered conformation permits increased interaction between a myosin head and an actin filament which, ultimately, produces a muscle contraction. The troponin complex has protein subunits C, I, and T. Subunit C binds Ca(2+) and subunit I binds to actin and inhibits actin-myosin interaction. Subunit T binds the troponin complex to the tropomyosin complex and is also required for Ca(2+)-mediated activation of actomyosin ATPase activity. There are 3 different troponin T genes that encode tissue-specific isoforms of subunit T for fast skeletal-, slow skeletal-, and cardiac-muscle. This gene encodes fast skeletal troponin T protein; also known as troponin T type 3. Alternative splicing results in multiple transcript variants encoding additional distinct troponin T type 3 isoforms. A developmentally regulated switch between fetal/neonatal and adult troponin T type 3 isoforms occurs. Additional splice variants have been described but their biological validity has not been established. Mutations in this gene may cause distal arthrogryposis multiplex congenita type 2B (DA2B). [provided by RefSeq, Oct 2009]

TNNT3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BP6

Variant 11-1923624-C-A is Benign according to our data. Variant chr11-1923624-C-A is described in ClinVar as [Likely_benign]. Clinvar id is 1197742.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TNNT3	NM_006757.4 linkuse as main transcript	c.49+52C>A		intron_variant		ENST00000278317.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TNNT3	ENST00000278317.11 linkuse as main transcript	c.49+52C>A		intron_variant		5	NM_006757.4	A2	P45378-2

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

1290

AN:

147864

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.0305

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00282

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000226

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000896

Gnomad OTH

AF:

0.00632

GnomAD3 exomes

AF:

0.00226

AC:

564

AN:

249144

Hom.:

AF XY:

0.00173

AC XY:

234

AN XY:

135054

show subpopulations

Gnomad AFR exome

AF:

0.0309

Gnomad AMR exome

AF:

0.00131

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000802

Gnomad OTH exome

AF:

0.00264

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00103

AC:

1249

AN:

1211138

Hom.:

Cov.:

AF XY:

0.000897

AC XY:

546

AN XY:

608798

show subpopulations

Gnomad4 AFR exome

AF:

0.0373

Gnomad4 AMR exome

AF:

0.00157

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000727

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000294

Gnomad4 OTH exome

AF:

0.00238

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.00875

AC:

1295

AN:

147980

Hom.:

Cov.:

AF XY:

0.00880

AC XY:

634

AN XY:

72086

show subpopulations

Gnomad4 AFR

AF:

0.0305

Gnomad4 AMR

AF:

0.00281

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000226

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000897

Gnomad4 OTH

AF:

0.00625

Alfa

AF:

0.00464

Hom.:

Bravo

AF:

0.0102

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Nov 14, 2019	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

4.8

DANN

Benign

0.53

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

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