Heart Failure With Reduced Ejection Fraction Clinical Trial
Official title:
Longitudinal Gut Microbiome and Host Multi-omic Profiling in Patients With Chronic Heart Failure
Verified date | April 2024 |
Source | Stanford University |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
The goal of this observational study is to learn about the composition and function of the gut microbiome in adults with chronic heart failure with reduced ejection fraction. The main questions the study aims to answer are: 1. How does the gut microbiome and its interactions with the host change over time in adults with chronic heart failure? 2. How do these changes relate to heart failure disease severity and complications?
Status | Enrolling by invitation |
Enrollment | 150 |
Est. completion date | December 2028 |
Est. primary completion date | December 2028 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 75 Years |
Eligibility | Inclusion Criteria: - Heart failure with reduced ejection fraction (left ventricular ejection fraction less than 50%) - Non-ischemic cardiomyopathy - Body mass index (BMI) 18-40 kg/m2 Exclusion Criteria: - Treated diabetes - Advanced kidney disease - Cirrhosis - Significant gastrointestinal disease including any history of inflammatory bowel disease - History of extensive bowel resection - Active malignancy or systemic chemotherapy within the past 12 months - Active infection - Current or recent (within 4 weeks) use of systemic antibiotics, commercial probiotics, immunosuppressive or immunomodulatory medications - Pregnancy/lactation |
Country | Name | City | State |
---|---|---|---|
United States | Stanford University | Stanford | California |
Lead Sponsor | Collaborator |
---|---|
Stanford University | American Heart Association, National Heart, Lung, and Blood Institute (NHLBI) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Advanced heart failure-associated microbiome signatures | A map of gut microbiome compositional and functional features associated with a composite clinical outcome of advanced heart failure (composite of needing heart transplantation (including active listing), left ventricular assist device implantation, transition to hospice, or death) that occurs within 24 months of baseline visit. Fecal samples will be collected every 3 months over the first 12 month period. Microbiota composition will be determined by shotgun metagenomic sequencing, with taxonomic and metabolic pathway signatures generated using bioinformatic pipelines, respectively. Comprehensive microbiome signatures will encompass alpha and beta diversity, and differential abundance analysis. | 24 months from baseline visit | |
Primary | Temporal changes in the gut microbiome community composition in chronic heart failure | Longitudinal changes in the gut microbiome composition and functionality in chronic heart failure will be determined. Microbiome signatures will be mapped from fecal samples collected every 3 months over a 12 month period, generated from shotgun metagenomic sequencing data and after processing through bioinformatic pipelines. | 12 months from baseline visit | |
Secondary | Comprehensive longitudinal metabolome profile in chronic heart failure | Changes in the host (human) metabolome profile in chronic heart failure with reduced ejection fraction will be determined. Participants provide fasting blood samples every 3 months for 12 months, from which plasma samples are prepared. Plasma metabolites are run through liquid chromatography-mass spectrometry (LC-MS) columns. MetID (Metabolite Identification from a reference database) and our LC-MS data are used to identify hundreds of metabolites with confidence levels 1-2. Many of the identified metabolites are gut microbiome-derived. | 12 months from baseline visit | |
Secondary | Comprehensive longitudinal cytokine profile in chronic heart failure | Changes in the host (human) cytokines in chronic heart failure with reduced ejection fraction will be determined. Participants provide fasting blood samples every 3 months for 12 months, from which serum samples are prepared. Cytokines are profiled using a 76-cytokine Luminex profiling system at the Stanford Human Immune Monitoring Center. This involves attaching antibodies specific to cytokines to beads using a capture molecule. The fluorescent molecules are attached to the cytokines, and fluorescence is used as the measure of cytokine abundance. | 12 months from baseline visit | |
Secondary | Longitudinal change in New York Heart Association (NYHA) functional class | Participants' functional status (as measured by NYHA class, which ranges from 1 to 4, with 1 being no to minimal symptoms with activity, and 4 being symptoms at rest) will be assessed at each study visit for the first 12 months (every 3 months). | 12 months from baseline visit | |
Secondary | Longitudinal change in the self-reported functional status | Participant self-reported functional status will be assessed via Kansas City Cardiomyopathy Questionnaire-12, which participant will complete at each study visit (every 3 months for 12 months). Overall summary and clinical summary scores (each 0-100, with 0 corresponding to severe and 100 corresponding to no functional limitations) will be calculated and compared over visits. | 12 months from baseline visit |
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