NCT06599658 COVID-19 Booster and IIV Schedule in Immunocompromised Hosts
| NCT ID | NCT06599658 |
| Status | Recruiting |
| Phase | Phase 2 |
| Sponsor | McGill University Health Centre/Research Institute of the McGill University Health Centre |
| Condition | COVID 19 |
| Study Type | INTERVENTIONAL |
| Enrollment | 660 participants |
| Start Date | 2024-11-20 |
| Primary Completion | 2027-03-31 |
Eligibility & Interventions
Eligibility Fast-Check
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What to Expect as a Participant
You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.
In Phase 2, researchers evaluate early signs of effectiveness. You may be randomized to receive the active treatment or a comparator. Monitoring continues closely.
This trial targets 660 participants in total. It began in 2024-11-20 with a primary completion date of 2027-03-31.
⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.
Brief Summary
The goal of this pragmatic embedded open-label, 2 x 2 factorial phase II randomized controlled trial is to evaluate strategies to improve COVID-19 booster and influenza vaccine immunogenicity in people living with immunocompromising conditions (PLIC). The main questions it aims to answer are: 1. Is co-administration of seasonal inactivated influenza vaccine (IIV) with the most up-to-date recommended COVID-19 booster dose non-inferior in inducing a 1-month peak protective humoral response against COVID-19, compared to a strategy of sequential administration of COVID-19 booster dose followed by seasonal IIV given one month later? 2. Is the administration of the most up-to-date recommended COVID-19 booster doses at 3-month intervals superior at maintaining a longer term protective humoral immune response, compared to booster doses administered at 6-month intervals? Researchers will compare (1) COVID-19 and Influenza vaccines administered at Day 0 + COVID-19 Booster at a 3-month interval, (2) COVID-19 vaccine administered at Day 0 and Influenza vaccine administered at Day 28 + COVID-19 Booster at a 3-month interval, (3) COVID-19 and Influenza vaccines administered at Day 0 + COVID-19 Booster at a 6-month interval, and (4) COVID-19 vaccine administered at Day 0 and Influenza vaccine administered at Day 28 + COVID-19 Booster at a 6-month interval to see if median neutralization capacity of patient sera is non-inferior in the co- vs. sequential administration arms at 1-month after the initial COVID-19 booster and superior in the 3-month interval arms vs. the 6-month interval arms at 12 months after the initial COVID-19 booster. These outcomes will also be compared at 2-months for question 1 and 6-months for question 2. People living with immunocompromising conditions who take part in the trial will have blood samples drawn to verify immune response, be monitored for changes in clinical events and therapies, and complete questionnaires to verify adverse effects, quality of life and economic impact.
Eligibility Criteria
Inclusion Criteria: \- All participants must meet ALL the following inclusion criteria: i. Adults (≥18 years) ii. Received the primary mRNA COVID-19 vaccine series (i.e., ≥3 doses) iii. Have at least one of the following immunocompromising conditions: a) Received a solid organ transplant (SOT) ≥3-months ago, and treated with a conventional maintenance immunosuppression regimen; b) People living with HIV (PLWH) receiving ART for ≥6 months who meet at least one of the following conditions: i) AIDS-defining illness in the last 6 months, ii) TB diagnosis in the last 6-months, iii) CD4\<200 cells/µL in the last 6 months, iv) CD4%\<15% in the last 6 months, or v) absence of HIV viral suppression in the last 6 months; c) Inflammatory bowel disease (IBD) treated with a conventional or biologic immunosuppressive agent for ≥3 months; d) Rheumatoid arthritis or systemic lupus erythematosus (herein referred to as rheumatological disease (RD)) treated with a conventional or biologic immunosup
Frequently Asked Questions
Who can join the NCT06599658 clinical trial?
This trial is open to participants of all sexes, aged 18 Years or older, studying COVID 19. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.
What phase is the NCT06599658 trial and what does that mean for participants?
Phase 2 trials evaluate whether the treatment shows signs of effectiveness while continuing to monitor safety. More participants are enrolled than in Phase 1 to help refine the treatment protocol.
Is NCT06599658 currently recruiting?
Yes, NCT06599658 is actively recruiting participants. Visit ClinicalTrials.gov or contact McGill University Health Centre/Research Institute of the McGill University Health Centre to inquire about joining.
Where is the NCT06599658 trial being conducted?
This trial is being conducted at Montreal, Canada, Montreal, Canada, Montreal, Canada.
Who is sponsoring the NCT06599658 clinical trial?
NCT06599658 is sponsored by McGill University Health Centre/Research Institute of the McGill University Health Centre. The trial plans to enroll 660 participants.
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