VCV002573400.1 - ClinVar

NM_000363.5(TNNI3):c.611G>T (p.Arg204Leu)

Germline

Classification

The aggregate germline classification for this variant, typically for a monogenic or Mendelian disorder as in the ACMG/AMP guidelines, or for response to a drug. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the aggregate classification.

(1)

Stars represent the aggregate review status, or the level of review supporting the aggregate germline classification for this VCV record. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status. The number of submissions which contribute to this review status is shown in parentheses.

Likely pathogenic

criteria provided, single submitter

Somatic

No data submitted for somatic clinical impact

Somatic

No data submitted for oncogenicity

Variant Details

Identifiers

NM_000363.5(TNNI3):c.611G>T (p.Arg204Leu)

Variation ID: 2573400 Accession: VCV002573400.1

Type and length

single nucleotide variant, 1 bp

Location

Cytogenetic: 19q13.42 19: 55151856 (GRCh38) [ NCBI UCSC ] 19: 55663224 (GRCh37) [ NCBI UCSC ]

Timeline in ClinVar

	First in ClinVar Help The date this variant first appeared in ClinVar with each type of classification.	Last submission Help The date of the most recent submission for each type of classification for this variant.	Last evaluated Help The most recent date that a submitter evaluated this variant for each type of classification.
Germline	Jul 29, 2023	Jul 29, 2023	Jun 19, 2023

HGVS

Nucleotide	Protein	Molecular consequence
NM_000363.5:c.611G>T MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.	NP_000354.4:p.Arg204Leu	missense
NC_000019.10:g.55151856C>A
NC_000019.9:g.55663224C>A
NG_007866.2:g.10877G>T
NG_011829.2:g.2383G>T
LRG_432:g.10877G>T
LRG_432t1:c.611G>T	LRG_432p1:p.Arg204Leu
LRG_679:g.2383G>T

... more HGVS ... less HGVS

Protein change

R204L

Other names

Canonical SPDI

NC_000019.10:55151855:C:A

Functional consequence Help The effect of the variant on RNA or protein function, based on experimental evidence from submitters.

Global minor allele frequency (GMAF) Help The global minor allele frequency calculated by the 1000 Genomes Project. The minor allele at this location is indicated in parentheses and may be different from the allele represented by this VCV record.

Allele frequency Help The frequency of the allele represented by this VCV record.

Links

VarSome

Genes

Gene	OMIM	ClinGen Gene Dosage Sensitivity Curation		Variation Viewer Help Links to Variation Viewer, a genome browser to view variation data from NCBI databases.	Related variants
Gene	OMIM	HI score Help The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.	TS score Help The triplosensitivity score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team.		Within gene Help The number of variants in ClinVar that are contained within this gene, with a link to view the list of variants.	All Help The number of variants in ClinVar for this gene, including smaller variants within the gene and larger CNVs that overlap or fully contain the gene.
TNNI3		Little evidence for dosage pathogenicity	No evidence available	GRCh38 GRCh37	699	760

Conditions - Germline

Condition Help The condition for this variant-condition (RCV) record in ClinVar.	Classification Help The aggregate germline classification for this variant-condition (RCV) record in ClinVar. The number of submissions that contribute to this aggregate classification is shown in parentheses. (# of submissions)	Review status Help The aggregate review status for this variant-condition (RCV) record in ClinVar. This value is calculated by NCBI based on data from submitters. Read our rules for calculating the review status.	Last evaluated Help The most recent date that a submitter evaluated this variant for the condition.	Variation/condition record Help The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page.
Cardiomyopathy	Likely pathogenic (1)	criteria provided, single submitter	Jun 19, 2023	RCV003317736.1

Submissions - Germline

Classification Help The submitted germline classification for each SCV record. (Last evaluated)	Review status Help Stars represent the review status, or the level of review supporting the submitted (SCV) record. This value is calculated by NCBI based on data from the submitter. Read our rules for calculating the review status. This column also includes a link to the submitter’s assertion criteria if provided, and the collection method. (Assertion criteria)	Condition Help The condition for the classification, provided by the submitter for this submitted (SCV) record. This column also includes the affected status and allele origin of individuals observed with this variant.	Submitter Help The submitting organization for this submitted (SCV) record. This column also includes the SCV accession and version number, the date this SCV first appeared in ClinVar, and the date that this SCV was last updated in ClinVar.	More information Help This column includes more information supporting the classification, including citations, the comment on classification, and detailed evidence provided as observations of the variant by the submitter.
Likely pathogenic (Jun 19, 2023)	criteria provided, single submitter (LabCorp Variant Classification Summary - May 2015) Method: clinical testing	Cardiomyopathy Affected status: unknown Allele origin: germline	Women's Health and Genetics/Laboratory Corporation of America, LabCorp Accession: SCV004020587.1 First in ClinVar: Jul 29, 2023 Last updated: Jul 29, 2023	Comment: Variant summary: TNNI3 c.611G>T (p.Arg204Leu) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging … (more) Variant summary: TNNI3 c.611G>T (p.Arg204Leu) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4e-06 (i.e., 1 heterozygote) in 249574 control chromosomes (gnomAD). To our knowledge, no occurrence of c.611G>T in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Additionally, other missense variants affecting the same codon, namely c.610C>T (p.Arg204Cys) and c.611G>A (p. Arg2014His), have been classified as pathogenic in ClinVar and reported in association with Hypertrophic Cardiomyopathy in HGMD. These additional missense variants have been reported in the literature in hypertrophic cardiomyopathy probands (PMIDs: 15698845, 29176140, 34036930, 33906374), including several potential de novo occurrences (PMIDs: 31912959, 20569525, 29176140 and ClinVar), and functional studies have shown that disruption of this amino acid leads to increased calcium sensitivity and can disrupt protein-protein interactions (PMIDs:27895589, 15698845). Based on the evidence outlined above, the variant was classified as likely pathogenic. (less)

Comment:

Variant summary: TNNI3 c.611G>T (p.Arg204Leu) results in a non-conservative amino acid change in the encoded protein sequence. Five of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 4e-06 (i.e., 1 heterozygote) in 249574 control chromosomes (gnomAD). To our knowledge, no occurrence of c.611G>T in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Additionally, other missense variants affecting the same codon, namely c.610C>T (p.Arg204Cys) and c.611G>A (p. Arg2014His), have been classified as pathogenic in ClinVar and reported in association with Hypertrophic Cardiomyopathy in HGMD. These additional missense variants have been reported in the literature in hypertrophic cardiomyopathy probands (PMIDs: 15698845, 29176140, 34036930, 33906374), including several potential de novo occurrences (PMIDs: 31912959, 20569525, 29176140 and ClinVar), and functional studies have shown that disruption of this amino acid leads to increased calcium sensitivity and can disrupt protein-protein interactions (PMIDs:27895589, 15698845). Based on the evidence outlined above, the variant was classified as likely pathogenic.

Germline Functional Evidence

There is no functional evidence in ClinVar for this variation. If you have generated functional data for this variation, please consider submitting that data to ClinVar.

Comment:

Citations for germline classification of this variant

There are no citations for germline classification of this variant in ClinVar. If you know of citations for this variation, please consider submitting that information to ClinVar.

Text-mined citations for this variant ...

Record last updated Jul 29, 2023

ClinVar Genomic variation as it relates to human health

NM_000363.5(TNNI3):c.611G>T (p.Arg204Leu)

Variant Details

Genes

Conditions - Germline

Submissions - Germline

Germline Functional Evidence

Citations for germline classification of this variant

Text-mined citations for this variant ...