Atherosclerosis of Coronary ArteryNCT06860295
"Immunoregulation in Atherosclerosis: A Single-Cell RNA Sequencing Study"
An observational study of Atherosclerosis of Coronary Artery, run by Hospital Israelita Albert Einstein at 1 site in Brazil.
Trial summary
Atherosclerosis is the leading cause of acute cardiovascular events, such as myocardial infarction and stroke, and is a significant risk factor for cardiovascular mortality. The detailed understanding of the immune mechanisms and cellular transformations involved in the pathogenesis of atherosclerosis is still… Read more about this study
- Who is it for?
- Ages 45 to 75 years
- Conditions the study is for
- Atherosclerosis of Coronary Artery
- What is being tested?
- Single Cell RNA Sequencing
- How many people
- 30 participants
- Where
- 1 siteBrazil
- Study dates
- 25 Jun 2025to 25 Apr 2027
- How long will I take part?
- 2 Years
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 45 to 75 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients diagnosed with ischemic cardiomyopathy due to advanced atherosclerosis, undergoing heart transplantation.
Who may be able to join
- Patients diagnosed with ischemic cardiomyopathy due to advanced atherosclerosis, undergoing heart transplantation;
- Patients with coronary artery disease submitted to coronary artery bypass graft surgery (CABG)."
- Aged between 40 and 75 years;
- Signed informed consent form.
Who cannot join
- Patients with systemic inflammatory or autoimmune diseases;
- History of cancer within the last 5 years or active malignancy;
- Recent use (within the last 6 months) of immunosuppressive therapy.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Brazil1 site
Hospital Israelita Albert Einstein
São Paulo, São Paulo, 05652-900
About this study
Official title: The Architectural Immunoregulation in Atherosclerotic Disease: A Single-Cell RNA Sequencing and Spatial Biology Approach
Atherosclerosis is the leading cause of acute cardiovascular events, such as myocardial infarction and stroke, and is a significant risk factor for cardiovascular mortality. The detailed understanding of the immune mechanisms and cellular transformations involved in the pathogenesis of atherosclerosis is still limited, and the use of single-cell RNA sequencing (scRNAseq) has revealed new cellular functions and subpopulations associated with disease progression. This study aims to identify cellular subpopulations, molecular pathways, and changes in gene expression related to the development of atherosclerosis in human coronary arteries. Using scRNAseq, the study seeks to characterize the transcriptomic landscape of cells present in atherosclerotic plaques and identify molecular signatures that reveal individual predispositions to specific phenotypes, such as disease susceptibility and response to therapies. The research will be conducted at the Albert Einstein Israeli Hospital in São Paulo and will involve samples from coronary arteries and atherosclerotic plaques of the explanted hearts of patients who have undergone heart transplants as well as from discarded material of coronary artery bypass graft surgery (CABG). With an estimated sample size of 20-30 plaques, the data obtained will allow for a detailed analysis of the molecular mechanisms involved in atherosclerosis, contributing to the development of specific therapeutic targets.
Read the detailed description
This is a prospective observational study that will be conducted with samples of coronary arteries and atherosclerotic plaques from the explanted hearts of patients with ischemic cardiomyopathy who have undergone heart transplants as well as from discarded material of coronary artery bypass graft surgery . The atherosclerotic plaque samples will be retrieved from the coronary arteries during the transplant surgery or the CABG procedure and transported to the laboratory within 2 hours. The selected arteries will be dissected and microscopically evaluated, and the samples will be fixed in formalin, embedded in paraffin, and stained for histological analysis. The tissue will be enzymatically dissociated to obtain individual cells, which will then be filtered and assessed for cell viability. The cells will undergo single-cell RNA sequencing (scRNAseq) with the aim of analyzing around 5,000-10,000 cells per sample. The sample size will be 20-30 plaques, with the goal of capturing the main cellular populations and performing a robust analysis.
- Conditions
- Atherosclerosis of Coronary Artery
- Being tested
- Single Cell RNA Sequencing
- Keywords
- Atherosclerosis, Single Cell RNA-sequencing, Immunology
- Medical subject headings
- Coronary Artery Disease, Atherosclerosis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Single Cell RNA SequencingDiagnostic test
Reprocessing
Data normalization, dimensionality reduction, and clustering will be performed using the Seurat package (based on R).
Cell types will be identified based on canonical marker gene expression. Cell Subpopulation Identification
Clusters will be annotated based on signatures of known cell types (e.g., endothelial cells, smooth muscle cells, macrophages, etc.).
Differential gene expression analysis will be conducted to identify disease-associated genes.
Pathway and Function Enrichment
Gene Set Enrichment Analysis (GSEA) and pathway analyses (e.g., KEGG, Reactome) will be carried out to investigate the biological processes and pathways driving atherosclerosis.
Quality Control
Sequencing reads will be assessed for quality using FASTQC, and low-quality reads will be filtered out.
The Cell Ranger software (10x Genomics) will be used to align reads to the human genome and quantify gene expression at the single-cell level.
| Study group | Role | What they receive |
|---|---|---|
| Coronary Plaques from Explanted Heart | The selected arteries will be dissected and microscopically evaluated, and the samples will be fixed in formalin, embedded in paraffin, and stained for histological analysis. The tissue will be enzymatically dissociated to obtain individual cells, which will then be filtered and assessed for cell viability. The cells will undergo single-cell RNA sequencing (scRNAseq) with the aim of analyzing around 5,000-10,000 cells per sample. The sample size will be 20-30 plaques, with the goal of capturing the main cellular populations and performing a robust analysis. Receives: Diagnostic Test: Single Cell RNA Sequencing |
What is being measured
The primary outcome is the main question the study is designed to answer.
Concentration of Specific Cells Clusters And Macrophage / Linfocite Subpopulations : Create a high-resolution single-cell atlas of atherosclerotic plaques.
Determine the concentration of cellular clusters with specific inflammatory subpopulations determination to Create a high-resolution single-cell atlas of atherosclerotic plaques, revealing cell-specific transcriptional changes associated with the disease. The findings could identify new therapeutic targets for intervention in atherosclerosis and enhance the understanding of its molecular pathogenesis.
Measured: Through study completion, an average of 1 year and a half.
Secondary outcomes (1)
Concentration of interleukins and cellular subtypes by citometer flow to Identification of molecular signatures in atherosclerosis
The secondary objective is to identify molecular signatures that reveal individual predispositions to specific phenotypes, such as susceptibility to atherosclerosis, response to therapies, and other health characteristics, establishing the foundation for precision medicine and population health studies in Brazil by determining specific concentrations of pro and anti-inflammatory molecules and cell types.
Measured: Through study completion, an average of 1 year and a half .
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Mar 2025
- Study start25 Jun 2025 (estimated)
- Primary completion25 Oct 2026 (estimated)
- Study completion25 Apr 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (15)Papers the sponsor has linked to this study.
- Other trials for Atherosclerosis of Coronary ArteryStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Prospective
- Enrolment
- 30 participants (estimated)
- Target duration
- 2 Years
Sponsor and investigators
- Lead sponsor
- Hospital Israelita Albert Einstein
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Carlos Vicente Serrano Junior, Hospital Israelita Albert Einstein
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06860295
- Sponsor's protocol ID
- AteroImunoHIAE
- Status last verified
- Jun 2025
- First submitted
- 24 Feb 2025
- Last updated
- 10 Jun 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: The scRNA-seq data and R scripts used in the analysis of this study will be available from the corresponding author upon request.
Publications
Zhang H, Viveiros A, Nikhanj A, Nguyen Q, Wang K, Wang W, Freed DH, Mullen JC, MacArthur R, Kim DH, Tymchak W, Sergi CM, Kassiri Z, Wang S, Oudit GY. The Human Explanted Heart Program: A translational bridge for cardiovascular medicine. Biochim Biophys Acta Mol Basis Dis. 2021 Jan 1;1867(1):165995. doi: 10.1016/j.bbadis.2020.165995. Epub 2020 Oct 22.
PubMed 33141063Rajab TK, Singh SK. Donation After Cardiac Death Heart Transplantation in America Is Clinically Necessary and Ethically Justified. Circ Heart Fail. 2018 Mar;11(3):e004884. doi: 10.1161/CIRCHEARTFAILURE.118.004884. No abstract available.
PubMed 29664408Price AL, Patterson N, Yu F, Cox DR, Waliszewska A, McDonald GJ, Tandon A, Schirmer C, Neubauer J, Bedoya G, Duque C, Villegas A, Bortolini MC, Salzano FM, Gallo C, Mazzotti G, Tello-Ruiz M, Riba L, Aguilar-Salinas CA, Canizales-Quinteros S, Menjivar M, Klitz W, Henderson B, Haiman CA, Winkler C, Tusie-Luna T, Ruiz-Linares A, Reich D. A genomewide admixture map for Latino populations. Am J Hum Genet. 2007 Jun;80(6):1024-36. doi: 10.1086/518313. Epub 2007 Apr 13.
PubMed 17503322Gouveia MH, Bentley AR, Leal TP, Tarazona-Santos E, Bustamante CD, Adeyemo AA, Rotimi CN, Shriner D. Unappreciated subcontinental admixture in Europeans and European Americans and implications for genetic epidemiology studies. Nat Commun. 2023 Nov 7;14(1):6802. doi: 10.1038/s41467-023-42491-0.
PubMed 37935687Hu Z, Liu W, Hua X, Chen X, Chang Y, Hu Y, Xu Z, Song J. Single-Cell Transcriptomic Atlas of Different Human Cardiac Arteries Identifies Cell Types Associated With Vascular Physiology. Arterioscler Thromb Vasc Biol. 2021 Apr;41(4):1408-1427. doi: 10.1161/ATVBAHA.120.315373. Epub 2021 Feb 25.
PubMed 33626908Soehnlein O, Libby P. Targeting inflammation in atherosclerosis - from experimental insights to the clinic. Nat Rev Drug Discov. 2021 Aug;20(8):589-610. doi: 10.1038/s41573-021-00198-1. Epub 2021 May 11.
PubMed 33976384Fernandez DM, Rahman AH, Fernandez NF, Chudnovskiy A, Amir ED, Amadori L, Khan NS, Wong CK, Shamailova R, Hill CA, Wang Z, Remark R, Li JR, Pina C, Faries C, Awad AJ, Moss N, Bjorkegren JLM, Kim-Schulze S, Gnjatic S, Ma'ayan A, Mocco J, Faries P, Merad M, Giannarelli C. Single-cell immune landscape of human atherosclerotic plaques. Nat Med. 2019 Oct;25(10):1576-1588. doi: 10.1038/s41591-019-0590-4. Epub 2019 Oct 7.
PubMed 31591603Wirka RC, Wagh D, Paik DT, Pjanic M, Nguyen T, Miller CL, Kundu R, Nagao M, Coller J, Koyano TK, Fong R, Woo YJ, Liu B, Montgomery SB, Wu JC, Zhu K, Chang R, Alamprese M, Tallquist MD, Kim JB, Quertermous T. Atheroprotective roles of smooth muscle cell phenotypic modulation and the TCF21 disease gene as revealed by single-cell analysis. Nat Med. 2019 Aug;25(8):1280-1289. doi: 10.1038/s41591-019-0512-5. Epub 2019 Jul 29.
PubMed 31359001Kim K, Park SE, Park JS, Choi JH. Characteristics of plaque lipid-associated macrophages and their possible roles in the pathogenesis of atherosclerosis. Curr Opin Lipidol. 2022 Oct 1;33(5):283-288. doi: 10.1097/MOL.0000000000000842. Epub 2022 Aug 3.
PubMed 35942822Chattopadhyay A, Guan P, Majumder S, Kaw K, Zhou Z, Zhang C, Prakash SK, Kaw A, Buja LM, Kwartler CS, Milewicz DM. Preventing Cholesterol-Induced Perk (Protein Kinase RNA-Like Endoplasmic Reticulum Kinase) Signaling in Smooth Muscle Cells Blocks Atherosclerotic Plaque Formation. Arterioscler Thromb Vasc Biol. 2022 Aug;42(8):1005-1022. doi: 10.1161/ATVBAHA.121.317451. Epub 2022 Jun 16.
PubMed 35708026Su C, Lu Y, Wang Z, Guo J, Hou Y, Wang X, Qin Z, Gao J, Sun Z, Dai Y, Liu Y, Liu G, Xian X, Cui X, Zhang J, Tang J. Atherosclerosis: The Involvement of Immunity, Cytokines and Cells in Pathogenesis, and Potential Novel Therapeutics. Aging Dis. 2023 Aug 1;14(4):1214-1242. doi: 10.14336/AD.2022.1208.
PubMed 37163428Serrano CV Jr, Yoshida VM, Venturinelli ML, D'Amico E, Monteiro HP, Ramires JA, da Luz PL. Effect of simvastatin on monocyte adhesion molecule expression in patients with hypercholesterolemia. Atherosclerosis. 2001 Aug;157(2):505-12. doi: 10.1016/s0021-9150(00)00757-7.
PubMed 11472753Li Q, Wang M, Zhang S, Jin M, Chen R, Luo Y, Sun X. Single-cell RNA sequencing in atherosclerosis: Mechanism and precision medicine. Front Pharmacol. 2022 Oct 4;13:977490. doi: 10.3389/fphar.2022.977490. eCollection 2022.
PubMed 36267275Serrano CV Jr, de Mattos FR, Pitta FG, Nomura CH, de Lemos J, Ramires JAF, Kalil-Filho R. Association between Neutrophil-Lymphocyte and Platelet-Lymphocyte Ratios and Coronary Artery Calcification Score among Asymptomatic Patients: Data from a Cross-Sectional Study. Mediators Inflamm. 2019 Mar 26;2019:6513847. doi: 10.1155/2019/6513847. eCollection 2019.
PubMed 31049026Makover ME, Shapiro MD, Toth PP. There is urgent need to treat atherosclerotic cardiovascular disease risk earlier, more intensively, and with greater precision: A review of current practice and recommendations for improved effectiveness. Am J Prev Cardiol. 2022 Aug 6;12:100371. doi: 10.1016/j.ajpc.2022.100371. eCollection 2022 Dec.
PubMed 36124049
Study at a glance
From the registry record, last updated by the sponsor on 10 Jun 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Architectural Immunoregulation in Atherosclerotic Disease: A Single-Cell RNA Sequencing and Spatial Biology Approach
- ClinicalTrials.gov ID
- NCT06860295
- Acronym / sponsor ID
- AteroImunoHIAE
- Conditions
- Atherosclerosis of Coronary Artery
- Keywords
- Atherosclerosis, Single Cell RNA-sequencing, Immunology
- Study type
- Observational
- Recruitment status
- Not yet recruiting
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- Hospital Israelita Albert EinsteinUniversity, hospital or other
- Study start
- 25 Jun 2025 (estimated)
- Primary completion
- 25 Oct 2026 (estimated)
- Study completion
- 25 Apr 2027 (estimated)
- First posted
- 6 Mar 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Atherosclerosis is the leading cause of acute cardiovascular events, such as myocardial infarction and stroke, and is a significant risk factor for cardiovascular mortality. The detailed understanding of the immune mechanisms and cellular transformations involved in the pathogenesis of atherosclerosis is still limited, and the use of single-cell RNA sequencing (scRNAseq) has revealed new cellular functions and subpopulations associated with disease progression. This study aims to identify cellular subpopulations, molecular pathways, and changes in gene expression related to the development of atherosclerosis in human coronary arteries. Using scRNAseq, the study seeks to characterize the transcriptomic landscape of cells present in atherosclerotic plaques and identify molecular signatures that reveal individual predispositions to specific phenotypes, such as disease susceptibility and response to therapies. The research will be conducted at the Albert Einstein Israeli Hospital in São Paulo and will involve samples from coronary arteries and atherosclerotic plaques of the explanted hearts of patients who have undergone heart transplants as well as from discarded material of coronary artery bypass graft surgery (CABG). With an estimated sample size of 20-30 plaques, the data obtained will allow for a detailed analysis of the molecular mechanisms involved in atherosclerosis, contributing to the development of specific therapeutic targets.
Detailed description
This is a prospective observational study that will be conducted with samples of coronary arteries and atherosclerotic plaques from the explanted hearts of patients with ischemic cardiomyopathy who have undergone heart transplants as well as from discarded material of coronary artery bypass graft surgery . The atherosclerotic plaque samples will be retrieved from the coronary arteries during the transplant surgery or the CABG procedure and transported to the laboratory within 2 hours. The selected arteries will be dissected and microscopically evaluated, and the samples will be fixed in formalin, embedded in paraffin, and stained for histological analysis. The tissue will be enzymatically dissociated to obtain individual cells, which will then be filtered and assessed for cell viability. The cells will undergo single-cell RNA sequencing (scRNAseq) with the aim of analyzing around 5,000-10,000 cells per sample. The sample size will be 20-30 plaques, with the goal of capturing the main cellular populations and performing a robust analysis.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
- Target follow-up
- 2 Years
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Coronary Plaques from Explanted Heart | – | Diagnostic Test: Single Cell RNA SequencingThe selected arteries will be dissected and microscopically evaluated, and the samples will be fixed in formalin, embedded in paraffin, and stained for histological analysis. The tissue will be enzymatically dissociated to obtain individual cells, which will then be filtered and assessed for cell viability. The cells will undergo single-cell RNA sequencing (scRNAseq) with the aim of analyzing around 5,000-10,000 cells per sample. The sample size will be 20-30 plaques, with the goal of capturing the main cellular populations and performing a robust analysis. |
Who may qualify
- Ages
- 45 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients diagnosed with ischemic cardiomyopathy due to advanced atherosclerosis, undergoing heart transplantation.
Key inclusion criteria (4 listed)
- Patients diagnosed with ischemic cardiomyopathy due to advanced atherosclerosis, undergoing heart transplantation;
- Patients with coronary artery disease submitted to coronary artery bypass graft surgery (CABG)."
- Aged between 40 and 75 years;
- Signed informed consent form.
Key exclusion criteria (3 listed)
- Patients with systemic inflammatory or autoimmune diseases;
- History of cancer within the last 5 years or active malignancy;
- Recent use (within the last 6 months) of immunosuppressive therapy.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Single Cell RNA SequencingReprocessing Data normalization, dimensionality reduction, and clustering will be performed using the Seurat package (based on R). Cell types will be identified based on canonical marker gene expression. Cell Subpopulation Identification Clusters will be annotated based on signatures of known cell types (e.g., endothelial cells, smooth muscle cells, macrophages, etc.). Differential gene expression analysis will be conducted to identify disease-associated genes. Pathway and Function Enrichment Gene Set Enrichment Analysis (GSEA) and pathway analyses (e.g., KEGG, Reactome) will be carried out to investigate the biological processes and pathways driving atherosclerosis. Quality Control Sequencing reads will be assessed for quality using FASTQC, and low-quality reads will be filtered out. The Cell Ranger software (10x Genomics) will be used to align reads to the human genome and quantify gene expression at the single-cell level. | Diagnostic test | Coronary Plaques from Explanted Heart |
Primary outcome
Concentration of Specific Cells Clusters And Macrophage / Linfocite Subpopulations : Create a high-resolution single-cell atlas of atherosclerotic plaques.
Time frame: Through study completion, an average of 1 year and a half.
Determine the concentration of cellular clusters with specific inflammatory subpopulations determination to Create a high-resolution single-cell atlas of atherosclerotic plaques, revealing cell-specific transcriptional changes associated with the disease. The findings could identify new therapeutic targets for intervention in atherosclerosis and enhance the understanding of its molecular pathogenesis.
1 secondary outcome
Concentration of interleukins and cellular subtypes by citometer flow to Identification of molecular signatures in atherosclerosis
Time frame: Through study completion, an average of 1 year and a half .
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Jun 2025.
- Background: PubMed 33141063Zhang H, Viveiros A, Nikhanj A, Nguyen Q, Wang K, Wang W, Freed DH, Mullen JC, MacArthur R, Kim DH, Tymchak W, Sergi CM, Kassiri Z, Wang S, Oudit GY. The Human Explanted Heart Program: A translational bridge for cardiovascular medicine. Biochim Biophys Acta Mol Basis Dis. 2021 Jan 1;1867(1):165995. doi: 10.1016/j.bbadis.2020.165995. Epub 2020 Oct 22.
- Background: PubMed 29664408Rajab TK, Singh SK. Donation After Cardiac Death Heart Transplantation in America Is Clinically Necessary and Ethically Justified. Circ Heart Fail. 2018 Mar;11(3):e004884. doi: 10.1161/CIRCHEARTFAILURE.118.004884. No abstract available.
- Background: PubMed 17503322Price AL, Patterson N, Yu F, Cox DR, Waliszewska A, McDonald GJ, Tandon A, Schirmer C, Neubauer J, Bedoya G, Duque C, Villegas A, Bortolini MC, Salzano FM, Gallo C, Mazzotti G, Tello-Ruiz M, Riba L, Aguilar-Salinas CA, Canizales-Quinteros S, Menjivar M, Klitz W, Henderson B, Haiman CA, Winkler C, Tusie-Luna T, Ruiz-Linares A, Reich D. A genomewide admixture map for Latino populations. Am J Hum Genet. 2007 Jun;80(6):1024-36. doi: 10.1086/518313. Epub 2007 Apr 13.
- Background: PubMed 37935687Gouveia MH, Bentley AR, Leal TP, Tarazona-Santos E, Bustamante CD, Adeyemo AA, Rotimi CN, Shriner D. Unappreciated subcontinental admixture in Europeans and European Americans and implications for genetic epidemiology studies. Nat Commun. 2023 Nov 7;14(1):6802. doi: 10.1038/s41467-023-42491-0.
- Background: PubMed 33626908Hu Z, Liu W, Hua X, Chen X, Chang Y, Hu Y, Xu Z, Song J. Single-Cell Transcriptomic Atlas of Different Human Cardiac Arteries Identifies Cell Types Associated With Vascular Physiology. Arterioscler Thromb Vasc Biol. 2021 Apr;41(4):1408-1427. doi: 10.1161/ATVBAHA.120.315373. Epub 2021 Feb 25.
- Background: PubMed 33976384Soehnlein O, Libby P. Targeting inflammation in atherosclerosis - from experimental insights to the clinic. Nat Rev Drug Discov. 2021 Aug;20(8):589-610. doi: 10.1038/s41573-021-00198-1. Epub 2021 May 11.
- Background: PubMed 31591603Fernandez DM, Rahman AH, Fernandez NF, Chudnovskiy A, Amir ED, Amadori L, Khan NS, Wong CK, Shamailova R, Hill CA, Wang Z, Remark R, Li JR, Pina C, Faries C, Awad AJ, Moss N, Bjorkegren JLM, Kim-Schulze S, Gnjatic S, Ma'ayan A, Mocco J, Faries P, Merad M, Giannarelli C. Single-cell immune landscape of human atherosclerotic plaques. Nat Med. 2019 Oct;25(10):1576-1588. doi: 10.1038/s41591-019-0590-4. Epub 2019 Oct 7.
- Background: PubMed 31359001Wirka RC, Wagh D, Paik DT, Pjanic M, Nguyen T, Miller CL, Kundu R, Nagao M, Coller J, Koyano TK, Fong R, Woo YJ, Liu B, Montgomery SB, Wu JC, Zhu K, Chang R, Alamprese M, Tallquist MD, Kim JB, Quertermous T. Atheroprotective roles of smooth muscle cell phenotypic modulation and the TCF21 disease gene as revealed by single-cell analysis. Nat Med. 2019 Aug;25(8):1280-1289. doi: 10.1038/s41591-019-0512-5. Epub 2019 Jul 29.
- Background: PubMed 35942822Kim K, Park SE, Park JS, Choi JH. Characteristics of plaque lipid-associated macrophages and their possible roles in the pathogenesis of atherosclerosis. Curr Opin Lipidol. 2022 Oct 1;33(5):283-288. doi: 10.1097/MOL.0000000000000842. Epub 2022 Aug 3.
- Background: PubMed 35708026Chattopadhyay A, Guan P, Majumder S, Kaw K, Zhou Z, Zhang C, Prakash SK, Kaw A, Buja LM, Kwartler CS, Milewicz DM. Preventing Cholesterol-Induced Perk (Protein Kinase RNA-Like Endoplasmic Reticulum Kinase) Signaling in Smooth Muscle Cells Blocks Atherosclerotic Plaque Formation. Arterioscler Thromb Vasc Biol. 2022 Aug;42(8):1005-1022. doi: 10.1161/ATVBAHA.121.317451. Epub 2022 Jun 16.
- Background: PubMed 37163428Su C, Lu Y, Wang Z, Guo J, Hou Y, Wang X, Qin Z, Gao J, Sun Z, Dai Y, Liu Y, Liu G, Xian X, Cui X, Zhang J, Tang J. Atherosclerosis: The Involvement of Immunity, Cytokines and Cells in Pathogenesis, and Potential Novel Therapeutics. Aging Dis. 2023 Aug 1;14(4):1214-1242. doi: 10.14336/AD.2022.1208.
- Background: PubMed 11472753Serrano CV Jr, Yoshida VM, Venturinelli ML, D'Amico E, Monteiro HP, Ramires JA, da Luz PL. Effect of simvastatin on monocyte adhesion molecule expression in patients with hypercholesterolemia. Atherosclerosis. 2001 Aug;157(2):505-12. doi: 10.1016/s0021-9150(00)00757-7.
- Individual participant dataSharing planned: Yes. The scRNA-seq data and R scripts used in the analysis of this study will be available from the corresponding author upon request.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Atherosclerosis of Coronary Artery, run by Hospital Israelita Albert Einstein at 1 site in Brazil.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 10 Jun 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Brazil. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Carlos Vicente Serrano, PhD (+55 (11) 2151-5408, carlos.sjunior@einstein.br), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Concentration of Specific Cells Clusters And Macrophage / Linfocite Subpopulations : Create a high-resolution single-cell atlas of atherosclerotic plaques. (time frame: Through study completion, an average of 1 year and a half.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06860295, which also lists 15 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Jun 2025.