Safety and Immunogenicity of CRV-101 Vaccine for the Prevention of Herpes Zoster in Adults Aged 5… (NCT05304351) | Clinical Trial Compass
Active — Not RecruitingPhase 2
Safety and Immunogenicity of CRV-101 Vaccine for the Prevention of Herpes Zoster in Adults Aged 50 Years and Older
United States1,516 participantsStarted 2022-02-02
Plain-language summary
The purpose of this study is to assess the safety and immunogenicity of amezosvatein (CRV-101), an investigational vaccine compared to Shingrix® for the prevention of herpes zoster in adults aged 50 years and older
Who can participate
Age range
50 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Male and non-pregnant female participant must be ≥50 years of age inclusive, at the time of signing the informed consent.
. Participants who are healthy as determined by medical evaluation including comprehensive medical history, comprehensive physical examination, vital signs\*, and screening laboratory tests conducted no more than 30 days prior to first study injection administration (Day 0).
. (Applicable only for arms A through I) Completed an Emergency Use Authorization (EUA) or Conditional Marketing Authorization or licensed initial COVID-19 vaccine series (as applicable) ≥30 days prior to enrollment (i.e., at least 30 days prior to the Day 0 visit).
. Screening laboratory values \[sodium, potassium, blood urea nitrogen (BUN), Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), total bilirubin, alkaline phosphatase, creatinine, random glucose, white blood cell count with differential, hemoglobin, and platelet count\] must be within normal ranges or considered not clinically significant by the PI.\*\*
. Negative HIV 1/2 antibody, hepatitis B surface antigen (HBsAg), and hepatitis C virus (HCV) antibody at screening. If HIV 1/2 antibody is positive, and confirmation testing is negative the participant may be enrolled.
. Normal urinalysis or, if abnormal, urinalysis determined to be not clinically significant by the PI at screening.\*\*
. A female participant is eligible to participate if she is not pregnant or breastfeeding, and one of the following conditions applies:
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Occurrence of solicited local and systemic signs and symptoms
Timeframe: Day 0-Day 6 for each vaccination timepoint
2
To compare the reactogenicity of amezosvatein to that of the standard 2-dose schedule of Shingrix®
Timeframe: Day 0-Day 6 for each vaccination timepoint
3
Occurrence of unsolicited non-serious adverse events
Timeframe: Day 0-Day 28 following each vaccination
4
Occurrence of serious adverse events (SAEs)
Timeframe: Day 0 - Day 421 [Month 14] (as noted in description)
5
Occurrence of adverse events (AEs) of special interest
Timeframe: Day 0 - Day 421 [Month 14] (as noted in description)
6
To evaluate safety as measured by hematology and biochemistry parameters
Timeframe: Day 7 and Day 63
7
Vaccine protein-specific antibody concentrations (GMC) elicited by vaccination between Month 0 and Month 3
. Capable of understanding and giving signed informed consent, which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol prior to any screening procedures.
Exclusion criteria
. History of herpes zoster (shingles).
. History or presence of acute or chronic illness (including cardiovascular, pulmonary, neurological, hepatic, rheumatic, hematological, metabolic, gastrointestinal, endocrinologic or renal disorders, or uncontrolled hypertension) which in the opinion of the Principal Investigator, may interfere with the evaluation of the safety or immunogenicity of the vaccine.
. History of autoimmune disease or suspected immunosuppressive or immunodeficient condition resulting from disease (e.g., malignancy, HIV infection) or immunosuppressive/cytotoxic therapy (e.g., medications used during cancer chemotherapy, organ transplantation, or to treat autoimmune disorders) that is likely to affect the immune response to vaccination as determined by the PI.
. Rash, tattoos, or any other dermatological condition that could adversely affect the vaccine injection site or interfere with its evaluation.
. Abnormal blood pressure \>150 mm Hg systolic or \>95 mm Hg diastolic prior to first study injection administration (Day 0).\*\*\*
. History of significant psychiatric illness (including history of suicidal ideation or attempt) with or without current medication.
. BMI ≥40kg/m2 at screening (where BMI \>34.9 kg/m2, clinically-significant abnormal serum glucose at screening determined by the PI, or clinically-significant diseases or medical conditions, as determined by the PI, is exclusionary.)
. Significant underlying illness that in the opinion of the investigator would be expected to prevent completion of the study (e.g., life-threatening disease likely to limit survival to less than 4 years).
Timeframe: Month 3
8
Vaccine Response Rate (≥ 4 fold increase in antibody concentration from pre-vaccination) at Month 3 for arms A, B, and C
Timeframe: Month 3
9
To compare the humoral immune response of Shingrix® to amezosvatein