rs3729836
Variant names:
Variant summary
Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1
The NM_000363.5(TNNI3):c.25-8T>A variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.252 in 1,595,860 control chromosomes in the GnomAD database, including 61,446 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).
Frequency
Genomes: 𝑓 0.35 ( 11970 hom., cov: 31)
Exomes 𝑓: 0.24 ( 49476 hom. )
Consequence
TNNI3
NM_000363.5 splice_region, intron
NM_000363.5 splice_region, intron
Scores
2
Splicing: ADA: 0.002082
2
Clinical Significance
Conservation
PhyloP100: -1.35
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]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -20 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.93).
BP6
Variant 19-55157141-A-T is Benign according to our data. Variant chr19-55157141-A-T is described in ClinVar as [Likely_benign]. Clinvar id is 43371.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-55157141-A-T is described in Lovd as [Benign]. Variant chr19-55157141-A-T is described in Lovd as [Likely_benign]. Variant chr19-55157141-A-T is described in Lovd as [Likely_pathogenic].
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.606 is higher than 0.05.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| TNNI3 | ENST00000344887.10 | c.25-8T>A | splice_region_variant, intron_variant | Intron 2 of 7 | 1 | NM_000363.5 | ENSP00000341838.5 | |||
| ENSG00000267110 | ENST00000587871.1 | n.*132-13T>A | intron_variant | Intron 5 of 8 | 5 | ENSP00000473050.1 |
Frequencies
GnomAD3 genomes 0.353 AC: 53463AN: 151578Hom.: 11930 Cov.: 31
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GnomAD3 exomes AF: 0.316 AC: 68587AN: 216832Hom.: 13019 AF XY: 0.309 AC XY: 36195AN XY: 117204
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GnomAD4 exome AF: 0.242 AC: 348815AN: 1444164Hom.: 49476 Cov.: 35 AF XY: 0.245 AC XY: 175355AN XY: 716598
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GnomAD4 genome 0.353 AC: 53569AN: 151696Hom.: 11970 Cov.: 31 AF XY: 0.355 AC XY: 26325AN XY: 74090
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ClinVar
Significance: Benign/Likely benign
Submissions summary: Benign:24
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not specified Benign:9
| Benign, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Oct 28, 2006 | - - |
| Benign, no assertion criteria provided | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | - | - - |
| Benign, no assertion criteria provided | clinical testing | Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ | - | - - |
| Benign, no assertion criteria provided | clinical testing | Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen | - | - - |
| Benign, criteria provided, single submitter | clinical testing | Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute | May 20, 2020 | - - |
| Benign, criteria provided, single submitter | clinical testing | GeneDx | Aug 28, 2012 | 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, no assertion criteria provided | clinical testing | Clinical Genetics, Academic Medical Center | - | - - |
| Benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | - | - - |
| Benign, no assertion criteria provided | clinical testing | Stanford Center for Inherited Cardiovascular Disease, Stanford University | Jul 15, 2013 | Note this variant was found in clinical genetic testing performed by one or more labs who may also submit to ClinVar. Thus any internal case data may overlap with the internal case data of other labs. The interpretation reviewed below is that of the Stanford Center for Inherited Cardiovascular Disease. c.25-8T>A. At the time of testing, the testing lab classified this as a variant of unknown significance. However, a review of dbSNP reveals that this variant is common in general populations samples (rs3729836). It is frequently seen in NHLBI Exome Sequencing Project dataset, which currently includes variant calls on ~6,500 Caucasian and African American individuals (as of 7/15/13). It is reported in 3,907/12,358 alleles (as of 7/15/13) - |
Cardiomyopathy, familial restrictive, 1 Benign:2
| Benign, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Sep 10, 2021 | - - |
| 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. - |
Cardiomyopathy Benign:2
| Benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Mar 09, 2018 | - - |
| Benign, no assertion criteria provided | clinical testing | Cohesion Phenomics | Oct 10, 2022 | - - |
Hypertrophic cardiomyopathy 7 Benign:2
| Benign, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Sep 10, 2021 | - - |
| 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. - |
Hypertrophic cardiomyopathy Benign:2
| Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
| Benign, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Feb 04, 2025 | - - |
Dilated cardiomyopathy 2A Benign:2
| Benign, criteria provided, single submitter | clinical testing | Genome-Nilou Lab | Sep 10, 2021 | - - |
| 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 | - - |
Primary ciliary dyskinesia Benign:1
| 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 | - - |
not provided Benign:1
| Likely benign, criteria provided, single submitter | not provided | Breakthrough Genomics, Breakthrough Genomics | - | - - |
Familial restrictive cardiomyopathy Benign:1
| Likely benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jun 14, 2016 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
Name
Calibrated prediction
Score
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dbscSNV1_ADA
Benign
dbscSNV1_RF
Benign
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at