E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Primary immunisation of subjects aged 50 years or older against herpes zoster (HZ).
The study population includes healthy volunteer males and females in the age ranges: 50-59 years of age (YOA), 60-69 YOA, and more than 70 YOA.
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MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To compare gE and VZV-specific CD4 T cell-mediated immune (CMI) and humoral immune responses to study vaccines (gE/AS01B, gE/AS01E, and gE/Saline) at Month 3 (one month following vaccinations at Months 0 and 2) in subjects ≥ 50 YOA (overall study population). |
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E.2.2 | Secondary objectives of the trial |
• To compare gE and VZV-specific CMI and humoral immune responses to study vaccines at Month 3 (1 month following vaccinations at Months 0 and 2) in subjects in each of the age ranges (50-59 YOA, 60-69 YOA and ≥ 70 YOA) and overall (CD8 T cell-mediated response); • To evaluate the safety and reactogenicity of study vaccines and placebo after each vaccination overall and in each age range; • To collect preliminary data on suspected cases of HZ in all treatment groups.
Exploratory objectives: • To compare gE and VZV-specific CMI and humoral immunity between US and EU subjects at Month 0 (pre-vaccination) and at Month 3 (1 month following vaccinations at Months 0 and 2) in all treatment groups, overall and in each age range; • To evaluate anti-VZV neutralising antibody (Ab) titers in a subset of subjects at Month 0 (pre-vaccination) and at Month 3 (1 month following vaccinations at Months 0 and 2) in all study groups receiving gE-containing vaccines, overall and in each age range. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• A male or female 50 years of age or above at the time of the first vaccination; • Written informed consent obtained from the subject; • Subjects who the investigator believes that they can and will comply with the requirements of the protocol (e.g., completion of the diary cards, return for follow-up visits) should be enrolled in the study; • If the subject is female, she must be of non-childbearing potential, i.e., have a current tubal ligation, hysterectomy, ovariectomy or be post-menopausal, or if she is of childbearing potential, she must practice adequate contraception for 30 days prior to vaccination, have a negative pregnancy test and continue such precautions for 2 months after completion of the vaccination series.
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E.4 | Principal exclusion criteria |
• Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine(s) within 30 days preceding the first dose of study vaccine, or planned use during the study period; • Chronic administration (defined as more than 14 consecutive days) of immunosuppressants or other immune-modifying drugs within three months prior to the first vaccine dose. (For corticosteroids, this will mean prednisone, or equivalent, more than 0.5 mg/kg/day. Inhaled and topical steroids are allowed); • Planned administration/ administration of a vaccine not foreseen by the study protocol within one month before the first study vaccination (2 weeks in the case of inactivated influenza vaccines or other non-replicating immunisation products [e.g., tetanus and reduced dose diphtheria toxoid (dT) vaccine, pneumococcal vaccine, hepatitis A vaccine, hepatitis B vaccine]), or scheduled within 30 days after study vaccination; • Previous vaccination against HZ; • Previous vaccination against varicella; • History of HZ; • History of allergic disease or reactions likely to be exacerbated by any component of the vaccine; • Any confirmed 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); • Administration of immunoglobulins and/or any blood products within the 3 months preceding the first injection of study vaccine or planned administration during the study period; • Acute disease at the time of enrolment. (Acute disease is defined as the presence of a moderate or severe illness with or without fever. All vaccines can be administered to persons with a minor illness such as diarrhoea, mild upper respiratory infection with or without low-grade febrile illness, i.e., oral, tympanic or axillary temperature < 37.5°C/99.5°F); • Any other condition (e.g., extensive psoriasis, chronic pain syndrome, cognitive impairment, severe hearing loss) that, in the opinion of the investigator, might interfere with the evaluations required by the study; • History of or current drug and/or alcohol abuse; • Pregnant or lactating female; • Female planning to become pregnant or planning to discontinue contraceptive precautions if of childbearing potential).
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E.5 End points |
E.5.1 | Primary end point(s) |
• Frequencies of CD4 T cells specific for gE and VZV antigens, as determined by in vitro intracellular cytokine staining (ICS), expressing at least 2 cytokines (from among IFN-g, IL-2, TNF-a and CD40L) 1 month after the second vaccination (Month 3); • Anti-gE and anti-VZV Ab concentrations as determined by enzyme-linked immunosorbent assay (ELISA) 1 month after the second vaccination (Month 3).
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | Yes |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | Yes |
E.8.1.7.1 | Other trial design description |
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E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 5 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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The end of the trial is defined as the last phone contact (at Month 14) of the last subject. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 6 |
E.8.9.2 | In all countries concerned by the trial days | 0 |