ClinVar Genomic variation as it relates to human health
NM_001018005.2(TPM1):c.271C>T (p.Arg91Cys)
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.
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.
No data submitted for somatic clinical impact
No data submitted for oncogenicity
Variant Details
- Identifiers
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NM_001018005.2(TPM1):c.271C>T (p.Arg91Cys)
Variation ID: 888353 Accession: VCV000888353.12
- Type and length
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single nucleotide variant, 1 bp
- Location
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Cytogenetic: 15q22.2 15: 63057015 (GRCh38) [ NCBI UCSC ] 15: 63349214 (GRCh37) [ NCBI UCSC ]
- Timeline in ClinVar
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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 May 31, 2020 May 1, 2024 Dec 1, 2023 - HGVS
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Nucleotide Protein Molecular
consequenceNM_001018005.2:c.271C>T MANE Select Help Transcripts from the Matched Annotation from the NCBI and EMBL-EBI (MANE) collaboration.
NP_001018005.1:p.Arg91Cys missense NM_000366.6:c.271C>T NP_000357.3:p.Arg91Cys missense NM_001018004.2:c.271C>T NP_001018004.1:p.Arg91Cys missense NM_001018006.2:c.271C>T NP_001018006.1:p.Arg91Cys missense NM_001018007.2:c.271C>T NP_001018007.1:p.Arg91Cys missense NM_001018008.2:c.163C>T NP_001018008.1:p.Arg55Cys missense NM_001018020.2:c.271C>T NP_001018020.1:p.Arg91Cys missense NM_001301244.2:c.271C>T NP_001288173.1:p.Arg91Cys missense NM_001301289.2:c.163C>T NP_001288218.1:p.Arg55Cys missense NM_001330344.2:c.163C>T NP_001317273.1:p.Arg55Cys missense NM_001330346.2:c.163C>T NP_001317275.1:p.Arg55Cys missense NM_001330351.2:c.163C>T NP_001317280.1:p.Arg55Cys missense NM_001365776.1:c.271C>T NP_001352705.1:p.Arg91Cys missense NM_001365777.1:c.271C>T NP_001352706.1:p.Arg91Cys missense NM_001365778.1:c.397C>T NP_001352707.1:p.Arg133Cys missense NM_001365779.1:c.271C>T NP_001352708.1:p.Arg91Cys missense NM_001365780.1:c.163C>T NP_001352709.1:p.Arg55Cys missense NM_001365781.2:c.163C>T NP_001352710.1:p.Arg55Cys missense NM_001365782.1:c.163C>T NP_001352711.1:p.Arg55Cys missense NC_000015.10:g.63057015C>T NC_000015.9:g.63349214C>T NG_007557.1:g.19377C>T LRG_387:g.19377C>T LRG_387t1:c.271C>T LRG_387p1:p.Arg91Cys - Protein change
- R55C, R91C, R133C
- Other names
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- Canonical SPDI
- NC_000015.10:63057014:C:T
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Functional
consequence HelpThe effect of the variant on RNA or protein function, based on experimental evidence from submitters.
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Global minor allele
frequency (GMAF) HelpThe 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.
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Allele frequency
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The frequency of the allele represented by this VCV record.
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The Genome Aggregation Database (gnomAD), exomes 0.00000
- Links
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 | ||
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HI score
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The haploinsufficiency score for the gene, curated by ClinGen’s Dosage Sensitivity Curation task team. |
TS score
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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. |
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TPM1 | No evidence available | No evidence available |
GRCh38 GRCh37 |
856 | 904 |
Conditions - Germline
Condition
Help
The condition for this variant-condition (RCV) record in ClinVar. |
Classification
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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
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The most recent date that a submitter evaluated this variant for the condition. |
Variation/condition record
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The RCV accession number, with most recent version number, for the variant-condition record, with a link to the RCV web page. |
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Uncertain significance (1) |
criteria provided, single submitter
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Jan 12, 2018 | RCV001121598.4 | |
Uncertain significance (1) |
criteria provided, single submitter
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Jan 12, 2018 | RCV001121599.4 | |
Uncertain significance (1) |
criteria provided, single submitter
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Oct 24, 2019 | RCV001188551.3 | |
Uncertain significance (1) |
criteria provided, single submitter
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May 14, 2019 | RCV001760087.2 | |
Uncertain significance (1) |
criteria provided, single submitter
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Dec 14, 2022 | RCV003163273.2 | |
Uncertain significance (2) |
criteria provided, multiple submitters, no conflicts
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Dec 1, 2023 | RCV003586268.4 |
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. |
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Uncertain significance
(Jan 12, 2018)
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criteria provided, single submitter
Method: clinical testing
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Hypertrophic cardiomyopathy 3
Affected status: unknown
Allele origin:
germline
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Illumina Laboratory Services, Illumina
Accession: SCV001280231.1
First in ClinVar: May 31, 2020 Last updated: May 31, 2020 |
Comment:
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 … (more)
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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. (less)
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Uncertain significance
(Jan 12, 2018)
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criteria provided, single submitter
Method: clinical testing
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Dilated cardiomyopathy 1Y
Affected status: unknown
Allele origin:
germline
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Illumina Laboratory Services, Illumina
Accession: SCV001280232.1
First in ClinVar: May 31, 2020 Last updated: May 31, 2020 |
Comment:
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 … (more)
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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. (less)
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Uncertain significance
(Oct 24, 2019)
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criteria provided, single submitter
Method: clinical testing
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Cardiomyopathy
Affected status: unknown
Allele origin:
germline
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Color Diagnostics, LLC DBA Color Health
Accession: SCV001355624.2
First in ClinVar: Jun 22, 2020 Last updated: Jan 12, 2022 |
Comment:
This missense variant replaces arginine with cysteine at codon 91 of the TPM1 protein. Computational prediction is inconclusive regarding the impact of this variant on … (more)
This missense variant replaces arginine with cysteine at codon 91 of the TPM1 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has been reported in several Japanese individual affected with hypertrophic cardiomyopathy (PMID: 25389285, 26274955). This variant has been identified in 1/251474 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. (less)
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Uncertain significance
(May 14, 2019)
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criteria provided, single submitter
Method: clinical testing
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Not Provided
Affected status: yes
Allele origin:
germline
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GeneDx
Accession: SCV001989797.2
First in ClinVar: Nov 06, 2021 Last updated: Mar 04, 2023 |
Comment:
Has not been previously published as pathogenic or benign to our knowledge; Not observed at a significant frequency in large population cohorts (Lek et al., … (more)
Has not been previously published as pathogenic or benign to our knowledge; Not observed at a significant frequency in large population cohorts (Lek et al., 2016); In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Missense variants in nearby residues (I92M, I92T, V95A) have been reported in the Human Gene Mutation Database and at GeneDx in association with cardiomyopathy (Stenson et al., 2014); however additional evidence is needed to definitively determine pathogenicity (less)
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Uncertain significance
(Jun 05, 2023)
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criteria provided, single submitter
Method: clinical testing
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Hypertrophic cardiomyopathy
Affected status: unknown
Allele origin:
germline
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Labcorp Genetics (formerly Invitae), Labcorp
Accession: SCV004282645.1
First in ClinVar: Feb 14, 2024 Last updated: Feb 14, 2024 |
Comment:
In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant … (more)
In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. ClinVar contains an entry for this variant (Variation ID: 888353). This variant has not been reported in the literature in individuals affected with TPM1-related conditions. This variant is present in population databases (no rsID available, gnomAD 0.0009%). This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 91 of the TPM1 protein (p.Arg91Cys). (less)
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Uncertain Significance
(Dec 01, 2023)
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criteria provided, single submitter
Method: clinical testing
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Hypertrophic cardiomyopathy
(Autosomal dominant inheritance)
Affected status: unknown
Allele origin:
germline
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All of Us Research Program, National Institutes of Health
Accession: SCV004815442.1
First in ClinVar: Apr 20, 2024 Last updated: Apr 20, 2024
Comment:
This study involves interpretation of variants in research participants for the purpose of population health screening. Participant phenotype was not available at the time of … (more)
This study involves interpretation of variants in research participants for the purpose of population health screening. Participant phenotype was not available at the time of variant classification. Additional details can be found in publication PMID: 35346344, PMCID: PMC8962531 (less)
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Comment:
This missense variant replaces arginine with cysteine at codon 91 of the TPM1 protein. Computational prediction is inconclusive regarding the impact of this variant on … (more)
This missense variant replaces arginine with cysteine at codon 91 of the TPM1 protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, PMID: 27666373). Splice site prediction tools suggest that this variant may not impact RNA splicing. To our knowledge, functional studies have not been performed for this variant. This variant has been reported in several Japanese individual affected with hypertrophic cardiomyopathy (PMID: 25389285, 26274955). This variant has been identified in 1/251474 chromosomes in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. (less)
Number of individuals with the variant: 2
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Uncertain significance
(Dec 14, 2022)
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criteria provided, single submitter
Method: clinical testing
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Cardiovascular phenotype
Affected status: unknown
Allele origin:
germline
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Ambry Genetics
Accession: SCV003863830.2
First in ClinVar: Apr 15, 2023 Last updated: May 01, 2024 |
Comment:
The p.R91C variant (also known as c.271C>T), located in coding exon 3 of the TPM1 gene, results from a C to T substitution at nucleotide … (more)
The p.R91C variant (also known as c.271C>T), located in coding exon 3 of the TPM1 gene, results from a C to T substitution at nucleotide position 271. The arginine at codon 91 is replaced by cysteine, an amino acid with highly dissimilar properties. This alteration has been reported in an individual with hypertrophic cardiomyopathy (HCM) (Tanaka A et al. J Am Heart Assoc, 2014 Nov;3:e001263). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. (less)
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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. |
Citations for germline classification of this variant
HelpTitle | Author | Journal | Year | Link |
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Cardiovascular Disease Modeling Using Patient-Specific Induced Pluripotent Stem Cells. | Tanaka A | International journal of molecular sciences | 2015 | PMID: 26274955 |
Endothelin-1 induces myofibrillar disarray and contractile vector variability in hypertrophic cardiomyopathy-induced pluripotent stem cell-derived cardiomyocytes. | Tanaka A | Journal of the American Heart Association | 2014 | PMID: 25389285 |
Text-mined citations for rs1266444831 ...
HelpRecord last updated Sep 29, 2024
This date represents the last time this VCV record was updated. The update may be due to an update to one of the included submitted records (SCVs), or due to an update that ClinVar made to the variant such as adding HGVS expressions or a rs number. So this date may be different from the date of the “most recent submission” reported at the top of this page.