Safety and Immunogenicity of Recombinant Herpes Zoster Vaccine (CHO Cells) in Healthy Subjects Aged 18 Years and Above

MAXVAX Biotechnology

Status and phase: Active, not recruiting; Phase 1

Conditions: Herpes Zoster

Treatments: Biological: Placebo; Biological: High dose adjuvant; Biological: Low Dose Recombinant Herpes Zoster Vaccine (CHO cells); Biological: Positive control; Biological: High Dose Recombinant Herpes Zoster Vaccine (CHO cells); Biological: Low dose adjuvant

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT05636436

MKKCT-100-001

Details and patient eligibility

About

The purposes of the study are to evaluate the safety and tolerability of different dose levels of recombinant herpes zoster vaccine (CHO Cells) with 2 doses at 2-month intervals in healthy subjects aged 18 years and older, and to preliminarily explore immunogenicity.

Full description

The clinical trial will be a single-center, randomized, blind, controlled study in which two dose levels of vaccine will be tested in healthy adults aged 18 to 49 years and 50 years and older, with progression from low dose level to high dose level and younger age group to the older age group based on assessment of safety and tolerability. The younger cohort (aged 18 to 49 years) will consist of 60 subjects, 30 per dose level, and these 30 subjects will be randomized into three subgroups, including vaccine group, adjuvant group and normal saline group, with randomization ratio of 2:2:1. The older cohort (aged 50 years and older) will consist of 72 subjects, 36 per dose level, and these 36 subjects will be randomized into four subgroups, including vaccine group, adjuvant group, Shingrix® group and normal saline group, with randomization ratio of 2:2:1:1.

Enrollment: 132 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

1. Permanent residents aged 18 years and above;
2. Subjects voluntarily agree to participate in the study and signed an informed consent;
3. Be able to participate in all scheduled visits and comply with the protocol requirements.

Exclusion criteria

1. Axillary temperature>37.0℃;
2. History of herpes zoster within 5 years before vaccination;
3. Prior vaccination with chickenpox vaccine or herpes zoster vaccine;
4. Female participant who is pregnant ( urine pregnancy test was positive) or breastfeeding, or has pregnancy plans within 1 year after the last vaccination;
5. Receipt of live vaccine within 28 days, or any other vaccine within 14 days prior to vaccination;
6. Receipt of immunoglobulin or intravenous immunoglobulin within 3 months before vaccination;
7. Acute diseases or acute exacerbation of chronic disease within 3 days before vaccination;
8. A known allergy to any components of the study vaccine (especially allergic to aminoglycoside antibiotics), or history of severe allergy to any previous vaccination;
9. History of convulsions, epilepsy, encephalopathy (such as congenital brain dysplasia, brain trauma, brain tumor, cerebral hemorrhage, cerebral infarction, brain infection disease, nerve tissue damage caused by chemical drug poisoning, etc.) or mental illness and family history;
10. Asplenia or functional asplenia, or splenectomy caused by any condition;
11. Primary or secondary impairment of immune function or diagnosed congenital or acquired immunodeficiency, human immunodeficiency virus (HIV) infection, lymphoma, leukemia, systemic lupus erythematosus (SLE), rheumatoid arthritis, juvenile rheumatoid arthritis (JRA), inflammatory bowel disease or other autoimmune diseases;
12. Receipt of immunosuppressive therapy within 3 months before vaccination (such as long-term use of systemic glucocorticoid ≥14 days, dose ≥2mg/kg/day or ≥20mg/day prednisone or equivalent dose), but inhaled, intra-articular and topical steroids are acceptable;
13. Severe cardiovascular disease(eg. Pulmonary heart disease, Pulmonary Edema); Severe liver or kidney disease; or diabetes with complication;
14. History of thrombocytopenia or other coagulation disorders, which may cause intramuscular injection contraindications;
15. Abnormal blood pressure during physical examination before vaccination (systolic pressure ≥ 140 mmHg and/or diastolic pressure ≥ 90 mmHg);
16. Abnormal and clinically significant laboratory test results as determined by the investigator before vaccination;
17. Current or history of alcohol and/or drug abuse;
18. Any condition that, in the opinion the investigator, may affect the safety of the subject or the evaluation of the study results.

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

---

132 participants in 11 patient groups, including a placebo group

Low dose vaccine group in adults aged 18 to 49 years

Experimental group

Description:

Subjects aged 18 to 49 years will be vaccinated with 2 doses of low dose recombinant herpes zoster vaccine (CHO cells) on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: Low Dose Recombinant Herpes Zoster Vaccine (CHO cells)

Low dose adjuvant group in adults aged 18 to 49 years

Experimental group

Description:

Subjects aged 18 to 49 years will be vaccinated with 2 doses of low dose adjuvant on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: Low dose adjuvant

High dose vaccine group in adults aged 18 to 49 years

Experimental group

Description:

Subjects aged 18 to 49 years will be vaccinated with 2 doses of high dose recombinant herpes zoster vaccine (CHO cells) on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: High Dose Recombinant Herpes Zoster Vaccine (CHO cells)

High dose adjuvant group in adults aged 18 to 49 years

Experimental group

Description:

Subjects aged 18 to 49 years will be vaccinated with 2 doses of high dose adjuvant on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: High dose adjuvant

Placebo group in adults aged 18 to 49 years

Placebo Comparator group

Description:

Subjects aged 18 to 49 years will be vaccinated with 2 doses of placebo on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: Placebo

Low dose vaccine group in adults aged 50 years and older

Experimental group

Description:

Subjects aged 50 years and older will be vaccinated with 2 doses of low dose recombinant herpes zoster vaccine (CHO cells) on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: Low Dose Recombinant Herpes Zoster Vaccine (CHO cells)

Low dose adjuvant group in adults aged 50 years and older

Experimental group

Description:

Subjects aged 50 years and older will be vaccinated with 2 doses of low dose adjuvant on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: Low dose adjuvant

High dose vaccine group in adults aged 50 years and older

Experimental group

Description:

Subjects aged 50 years and older will be vaccinated with 2 doses of high dose recombinant herpes zoster vaccine (CHO cells) on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: High Dose Recombinant Herpes Zoster Vaccine (CHO cells)

High dose adjuvant group in adults aged 50 years and older

Experimental group

Description:

Subjects aged 50 years and older will be vaccinated with 2 doses of high dose adjuvant on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: High dose adjuvant

Shingrix® group in adults aged 50 years and older

Active Comparator group

Description:

Subjects aged 50 years and older will be vaccinated with 2 doses of Shingrix® on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: Positive control

Placebo group in adults aged 50 years and older

Placebo Comparator group

Description:

Subjects aged 50 years and older will be vaccinated with 2 doses of placebo on a 0, 2 month schedule, administered intramuscularly (IM).

Treatment:

Biological: Placebo