19-55157624-G-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_000363.5(TNNI3):c.-35C>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0145 in 1,613,762 control chromosomes in the GnomAD database, including 2,191 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.069 ( 1133 hom., cov: 32)

Exomes 𝑓: 0.0089 ( 1058 hom. )

Consequence

TNNI3
NM_000363.5 5_prime_UTR

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:10

Conservation

PhyloP100: 0.615

Variant links:

Genes affected

TNNI3 (HGNC:11947): (troponin I3, cardiac type) Troponin I (TnI), along with troponin T (TnT) and troponin C (TnC), is one of 3 subunits that form the troponin complex of the thin filaments of striated muscle. TnI is the inhibitory subunit; blocking actin-myosin interactions and thereby mediating striated muscle relaxation. The TnI subfamily contains three genes: TnI-skeletal-fast-twitch, TnI-skeletal-slow-twitch, and TnI-cardiac. This gene encodes the TnI-cardiac protein and is exclusively expressed in cardiac muscle tissues. Mutations in this gene cause familial hypertrophic cardiomyopathy type 7 (CMH7) and familial restrictive cardiomyopathy (RCM). Troponin I is useful in making a diagnosis of heart failure, and of ischemic heart disease. An elevated level of troponin is also now used as indicator of acute myocardial injury in patients hospitalized with moderate/severe Coronavirus Disease 2019 (COVID-19). Such elevation has also been associated with higher risk of mortality in cardiovascular disease patients hospitalized due to COVID-19. [provided by RefSeq, Aug 2020]

TNNI3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.85).

BP6

Variant 19-55157624-G-T is Benign according to our data. Variant chr19-55157624-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 137687.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-55157624-G-T is described in Lovd as [Benign].

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.226 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TNNI3	NM_000363.5 linkuse as main transcript	c.-35C>A		5_prime_UTR_variant	1/8	ENST00000344887.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TNNI3	ENST00000344887.10 linkuse as main transcript	c.-35C>A		5_prime_UTR_variant	1/8	1	NM_000363.5	P1

Frequencies

GnomAD3 genomes

AF:

0.0684

AC:

10397

AN:

152084

Hom.:

1126

Cov.:

show subpopulations

Gnomad AFR

AF:

0.230

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0308

Gnomad ASJ

AF:

0.00662

Gnomad EAS

AF:

0.00482

Gnomad SAS

AF:

0.00786

Gnomad FIN

AF:

0.000377

Gnomad MID

AF:

0.0380

Gnomad NFE

AF:

0.00285

Gnomad OTH

AF:

0.0525

GnomAD3 exomes

AF:

0.0196

AC:

4881

AN:

248884

Hom.:

471

AF XY:

0.0156

AC XY:

2105

AN XY:

135142

show subpopulations

Gnomad AFR exome

AF:

0.239

Gnomad AMR exome

AF:

0.0146

Gnomad ASJ exome

AF:

0.00649

Gnomad EAS exome

AF:

0.00345

Gnomad SAS exome

AF:

0.00510

Gnomad FIN exome

AF:

0.000325

Gnomad NFE exome

AF:

0.00285

Gnomad OTH exome

AF:

0.0129

GnomAD4 exome

AF:

0.00892

AC:

13042

AN:

1461560

Hom.:

1058

Cov.:

AF XY:

0.00798

AC XY:

5800

AN XY:

727076

show subpopulations

Gnomad4 AFR exome

AF:

0.239

Gnomad4 AMR exome

AF:

0.0169

Gnomad4 ASJ exome

AF:

0.00666

Gnomad4 EAS exome

AF:

0.00164

Gnomad4 SAS exome

AF:

0.00458

Gnomad4 FIN exome

AF:

0.000543

Gnomad4 NFE exome

AF:

0.00204

Gnomad4 OTH exome

AF:

0.0204

GnomAD4 genome

AF:

0.0686

AC:

10436

AN:

152202

Hom.:

1133

Cov.:

AF XY:

0.0660

AC XY:

4916

AN XY:

74434

show subpopulations

Gnomad4 AFR

AF:

0.230

Gnomad4 AMR

AF:

0.0307

Gnomad4 ASJ

AF:

0.00662

Gnomad4 EAS

AF:

0.00483

Gnomad4 SAS

AF:

0.00787

Gnomad4 FIN

AF:

0.000377

Gnomad4 NFE

AF:

0.00285

Gnomad4 OTH

AF:

0.0558

Alfa

AF:

0.0279

Hom.:

Bravo

AF:

0.0790

Asia WGS

AF:

0.0550

AC:

192

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:10

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 27, 2011	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -

Cardiomyopathy, familial restrictive, 1

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

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. -

Familial Hypertrophic Cardiomyopathy with Wolff-Parkinson-White Syndrome

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Dilated Cardiomyopathy, Recessive

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Primary ciliary dyskinesia

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Hypertrophic cardiomyopathy 7

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

Familial restrictive cardiomyopathy

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Hypertrophic cardiomyopathy

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Dilated cardiomyopathy 2A

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.85

Cadd

Benign

7.8

Dann

Benign

0.79

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

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