Immunogenicity and Safety of Recombinant Herpes Zoster Vaccine (CHO Cells) in Healthy Subjects Aged 30 Years and Above

MAXVAX Biotechnology

Status and phase: Active, not recruiting; Phase 2

Conditions: Herpes Zoster

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

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT05856084

MKKCT-100-002

Details and patient eligibility

About

The purposes of the study are to evaluate the immunogenicity and safety of different dose levels of recombinant herpes zoster vaccine (CHO Cells) with 2 doses at 2-month intervals in healthy subjects aged 30 years and older.

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 30 to 49 years and 50 years and older. A total of 924 participants will be enrolled, including 396 participants aged 30 to 49 years and 528 participants aged 50 years and older. Participants aged 30 to 49 years will be randomized into three subgroups (low dose vaccine group, high dose vaccine group and placebo group) in a 1:1:1 ratio. Participants aged 50 years and older will be randomized into four subgroups (low dose vaccine group, high dose vaccine group, Shingrix® group and placebo group) in a 1:1:1:1 ratio.

Enrollment: 924 estimated patients

Sex: All

Ages: 30+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

1. Permanent residents aged 30 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. Current or history of alcohol and/or drug abuse;
17. 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

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924 participants in 7 patient groups, including a placebo group

Low dose vaccine group in adults aged 30 to 49 years

Experimental group

Description:

Participants aged 30 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)

High dose vaccine group in adults aged 30 to 49 years

Experimental group

Description:

Participants aged 30 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)

Placebo group in adults aged 30 to 49 years

Placebo Comparator group

Description:

Participants aged 30 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:

Participants 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)

High dose vaccine group in adults aged 50 years and older

Experimental group

Description:

Participants 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)

Shingrix® group in adults aged 50 years and older

Active Comparator group

Description:

Participants 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:

Participants 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