- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02441231
Probiotic Visbiome for Inflammation and Translocation in HIV II (PROOV IT II)
Probiotic Visbiome for Inflammation and Translocation in HIV II (PROOV IT II)
Modern antiretroviral therapy (ART) has transformed the clinical care and lived experience of HIV infection. However, increased rates of adverse health conditions that are related to immune activation, such as cardiovascular disease (CVD) and neurodegenerative disease in ART-treated individuals persist. An important cause of this inflammation is the gut CD4 T cell loss and the "leaking" or translocation of luminal gut bacteria and other microbes across the bowel wall and into the bloodstream.
The use of complementary and alternative therapies is very common among people living with HIV, with estimates ranging from 16-60%. However, their efficacy has generally not been well demonstrated. Probiotics are live microbes that may provide a health benefit to the host and the investigators believe that the simultaneous use of probiotics along with ART will improve gut CD4 T cell restoration and function and therefore reduce microbial translocation and immune activation.
A major challenge to HIV treatment is the suboptimal CD4 T cell count despite successful HIV suppression on ART in immunologic non-responders (INRs). These individuals are at increased risk of AIDS-related deaths and non-AIDS related comorbidities that may be associated with increased immune activation and microbial translocation from the gut mucosa. With limited treatment options, alternative therapies to reduce inflammation and restore gut immunology will be important. Probiotic Visbiome consists of a high potency blend of eight different probiotics. The precise mechanism of action of Visbiome is unknown,but preclinical studies have shown that Visbiome may modulate the immune response towards an immunoregualtory phenotype with increased the levels of IL-10 and reduced levels of proinflammatory cytokines (TNFα, IL1β and IL-8). Therefore,the investigators believe that the "beneficial" bacteria from Visbiome will accelerate the normalization of gut immune cells and function in HIV-infected INRs. It is hypothesized consumption of Visbiome for 48 weeks will help restore the immune system in INRs who have suboptimal immune reconstitution to currently available ART. Resolution of gut immune cells will mean that microbial translocation and immune activation will be normalized and will reduce the rates of HIV-associated comorbidities.
Study Overview
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
Contacts and Locations
Study Contact
- Name: Rupert Kaul, MD
- Phone Number: 416-978-8607
- Email: rupert.kaul@utoronto.ca
Study Contact Backup
- Name: Rodney Rousseau
- Phone Number: 416-946-7054
- Email: r.rousseau@mail.utoronto.ca
Study Locations
-
-
Ontario
-
Toronto, Ontario, Canada, M5G 1K2
- Recruiting
- Maple Leaf Medical Clinic
-
Contact:
- Colin Kovacs, MD
- Phone Number: 416-465-3252
- Email: ckovacs@mlmedical.com
-
Principal Investigator:
- Colin Kovacs, MD
-
Toronto, Ontario, Canada, M5G 2N2
- Recruiting
- Toronto General Hospital, UHN
-
Contact:
- Sharon Walmsley, MD
- Phone Number: 416-340-3871
- Email: sharon.walmsley@uhn.ca
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Documented HIV-1 infection
- Male adult (age >18 years)
- Currently on ART (>2 years but <10 years)
- Undetectable HIV-1 viral load <50 copies/ml for the past 2 years (1 viral blip below 500 copies/ml permitted in the past year)
- Last CD4 count <350 cells/μl, and >70% over the past 2 years <350 cells/μl
- Ability to provide informed consent
Exclusion Criteria:
- Current alcohol or substance use judged by the Investigator to potentially interfere with subject study compliance
- Taking pharmaceutical-grade probiotics
Any of the following abnormal laboratory results in screening:
- Hemoglobin <85 g/L
- Neutrophil count <750 cells/μl
- Platelet count <50,000 cells/μL
- AST or ALT >5X the upper limit of normal
- Colitis
- Liver fibrosis (decompensated cirrhosis), portal hypertension or clinical hepatitis
- Other significant underlying disease (non-HIV-1) that might impinge upon disease progression or death
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Probiotic Group
Visbiome probiotic group (900 billion bacteria daily; 2 sachets daily)
|
Visbiome probiotic
|
Placebo Comparator: Placebo Group
Placebo comparator group
|
Placebo
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percent change in blood immune activation
Time Frame: 48 weeks
|
Percent change in blood immune activation (co-expression of CD38 and HLA-DR) on CD8 T cells at week 48 in participants randomized to probiotic Visbiome versus the placebo arm
|
48 weeks
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Level of microbial translocation (including LSP and sCD14)
Time Frame: 48 weeks
|
48 weeks
|
Plasma level of inflammation and coagulation (including IL-6, D-dimer and CRP)
Time Frame: 48 weeks
|
48 weeks
|
Number and function of gut immune cells (including CD4 T cell subsets)
Time Frame: 48 weeks
|
48 weeks
|
Intestinal permeability (Lac/Mac ratio)
Time Frame: 48 weeks
|
48 weeks
|
Bacterial community diversity, determined by 16s rRNA gene sequencing of penile swabs
Time Frame: 48 weeks
|
48 weeks
|
Bacterial community composition, determined by 16s rRNA gene sequencing of penile swabs
Time Frame: 48 weeks
|
48 weeks
|
Gut HIV DNA levels
Time Frame: 48 weeks
|
48 weeks
|
Canadian Diet History Questionnaire
Time Frame: 48 weeks
|
48 weeks
|
Safety assessed by AE monitoring and participant questionnaire
Time Frame: 48 weeks
|
48 weeks
|
Tolerability of Visbiome assessed by AE monitoring and participant questionnaire
Time Frame: 48 weeks
|
48 weeks
|
Adherence to Visbiome assessed by participant questionnaire and sachet count
Time Frame: 48 weeks
|
48 weeks
|
Other Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Metabolomic measurements: vitamin D levels, glucose measurements, insulin levels and lipid profiling
Time Frame: 48 weeks
|
48 weeks
|
Microbiome analysis by 16s rRNA bacterial DNA isolated from penile swabs
Time Frame: 48 weeks
|
48 weeks
|
Collaborators and Investigators
Collaborators
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CTNPT 022B
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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