A Phase III Clinical Trial of the Group A and C Meningococcal Polysaccharide Vaccine

NCT ID: NCT04689191

Last Updated: 2020-12-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

PHASE3

Total Enrollment

1280 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-09-15

Study Completion Date

2021-12-31

Brief Summary

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This study is a randomized, double-blinded, and controlled phase III clinical trial of the Group A and C meningococcal polysaccharide vaccine to evaluate the safety and immunogenicity of the vaccine in healthy infants aged 2-6 years.

Detailed Description

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This study was divided into two stages. The first stage study was an early safety assessment study among 80 subjects. The first stage study was conducted gradually in 20 subjects aged 18-50 years, 20 subjects aged 7-17 years, and 40 subjects aged 2-6 years. The second phase was a randomized, double-blind, controlled, non-inferiority phase III clinical trial in 1200 healthy infants aged 2-6 years, to evaluate the immunogenicity and safety of the experimantal vaccine after immunization.

Conditions

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Meningitis, Meningococcal

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Experimental Vaccine

One dose of Experimental Group A and C meningococcal polysaccharide vaccine

Group Type EXPERIMENTAL

Experimental Group A and C meningococcal polysaccharide vaccine

Intervention Type BIOLOGICAL

One dose of Experimental Group A and C meningococcal polysaccharide vaccine

Active Comparator Vaccine

One dose of Control Group A and C meningococcal polysaccharide vaccine

Group Type ACTIVE_COMPARATOR

Control Group A and C meningococcal polysaccharide vaccine

Intervention Type BIOLOGICAL

One dose of Control Group A and C meningococcal polysaccharide vaccine

Interventions

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Experimental Group A and C meningococcal polysaccharide vaccine

One dose of Experimental Group A and C meningococcal polysaccharide vaccine

Intervention Type BIOLOGICAL

Control Group A and C meningococcal polysaccharide vaccine

One dose of Control Group A and C meningococcal polysaccharide vaccine

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

1. Healthy adults aged 18 to 50 years.
2. Proven legal identity.
3. Participants should understand the contents of the informed consent form, the vaccine in this trial, voluntarily sign the informed consent form, and be capable of using thermometers, scales, and filling in diary cards and contact cards as required.
4. Participants should be able to communicate well with investigators, understand and comply with the requirements of this trial.
5. Axillary temperature ≤37.0℃.

1. Healthy volunteer aged 7 to 17 years.
2. Proven legal identity.
3. Participants and their legal guardians should understand the contents of the informed consent form, the vaccine in this trial, voluntarily sign the informed consent form, and be capable of using thermometers, scales, and filling in diary cards and contact cards as required.
4. Participants and their legal guardians should be able to communicate well with investigators, understand and comply with the requirements of this trial.
5. Axillary temperature ≤37.0℃.

1. Healthy children aged 2 to 6 years.
2. Proven legal identity.
3. Participants' legal guardians should understand the contents of the informed consent form, the vaccine in this trial, voluntarily sign the informed consent form, and be capable of using thermometers, scales, and filling in diary cards and contact cards as required.
4. Participants' legal guardians should be able to communicate well with investigators, understand and comply with the requirements of this trial.
5. Axillary temperature ≤37.0℃.

1. Healthy children aged 2 to 6 years.
2. Proven legal identity.
3. Participants' legal guardians should understand the contents of the informed consent form, the vaccine in this trial, voluntarily sign the informed consent form, and be capable of using thermometers, scales, and filling in diary cards and contact cards as required.
4. Participants' legal guardians should be able to communicate well with investigators, understand and comply with the requirements of this trial.
5. Axillary temperature ≤37.0℃.

Exclusion Criteria

1. Contraindications for vaccination.
2. History of allergy to vaccines or drugs.
3. History of Epidemic Cerebrospinal Meningitis.
4. Immunization with any Group A meningococcal conjugate vaccine or polysaccharide vaccine within 12 months.
5. Immunization with any Group A and C meningococcal conjugate vaccine or polysaccharide vaccine within 3 years.
6. Immunization with any vaccine within 30 days.
7. Patients with convulsion, epilepsy, encephalopathy and psychiatric history or family history of epilepsy.
8. History of abnormal clinical manifestations and serious diseases to be excluded, including but not limited to nervous system, cardiovascular system, blood and lymphatic system, immune system, kidney, liver, gastrointestinal tract, respiratory system, metabolism, bones and other system diseases, and a history of malignant tumors.
9. Those who developed acute disease or acute attack of chronic disease.
10. Surgical removal of spleen or other important organs for any reason.
11. History of thrombocytopenia or other coagulation disorders may cause contraindication of subcutaneous injection.
12. Blood products such as immunoglobulin were received within 30 days before vaccination.
13. Have received immunosuppressive therapy or other immunomodulatory drugs within 6 months before signing the informed consent form (Note: inhaled or topical hormone drugs, except those with an interval of 14 days or more from the date of signing the informed consent form).
14. Those who participated in other clinical studies.
15. Participants who have a positive pregnancy test, or are breastfeeding, or plan to become pregnant, or plan to donate sperm or eggs from the screening to 12 months after the second vaccination.
16. Any other situations judged by investigators as not suitable for participating in this study.
* 7-17 years group:


1. Contraindications for vaccination.
2. History of allergy to vaccines or drugs.
3. History of Epidemic Cerebrospinal Meningitis.
4. Immunization with any Group A meningococcal conjugate vaccine or polysaccharide vaccine within 12 months.
5. Immunization with any Group A meningococcal conjugate vaccine or polysaccharide vaccine within 3 years.
6. Immunization with any vaccine within 30 days.
7. Patients with convulsion, epilepsy, encephalopathy and psychiatric history or family history of epilepsy.
8. Participant who has congenital heart disease, congenital malformation, Down's syndrome, sickle cell anemia or severe diseases with previous clinical manifestations that need to be excluded, including but not limited to nervous system, genetic defect disease (such as faba bean disease), cardiovascular system, blood and lymphatic system, immune system, kidney, liver, gastrointestinal tract, respiratory system, metabolism and bone system diseases, and History of malignant tumor.
9. Those who developed acute disease or acute attack of chronic disease.
10. Surgical removal of spleen or other important organs for any reason.
11. History of thrombocytopenia or other coagulation disorders may cause contraindication of subcutaneous injection.
12. Blood products such as immunoglobulin were received within 30 days before vaccination.
13. Have received immunosuppressive therapy or other immunomodulatory drugs within 6 months before signing the informed consent form (Note: inhaled or topical hormone drugs, except those with an interval of 14 days or more from the date of signing the informed consent form).
14. Those who participated in other clinical studies.
15. Women with positive pregnancy test after menarche.
16. Any other situations judged by investigators as not suitable for participating in this study.
* 2-6 years group:


1. Contraindications for vaccination.
2. History of allergy to vaccines or drugs.
3. History of Epidemic Cerebrospinal Meningitis.
4. Immunization with any Group A and C meningococcal conjugate vaccine or polysaccharide vaccine.
5. Immunization with any Group A meningococcal conjugate vaccine or polysaccharide vaccine within 12 months.
6. They were vaccinated with live attenuated vaccine within 14 days before vaccination and subunit or inactivated vaccine within 7 days (copy of vaccination certificate of subjects);
7. Participants with convulsion, epilepsy, encephalopathy and psychiatric history or family history of epilepsy.
8. Participant who has congenital heart disease, congenital malformation, Down's syndrome, sickle cell anemia or severe diseases with previous clinical manifestations that need to be excluded, including but not limited to nervous system, genetic defect disease (such as faba bean disease), cardiovascular system, blood and lymphatic system, immune system, kidney, liver, gastrointestinal tract, respiratory system, metabolism and bone system diseases, and History of malignant tumor.
9. Those who developed acute disease or acute attack of chronic disease.
10. Surgical removal of spleen or other important organs for any reason.
11. History of thrombocytopenia or other coagulation disorders may cause contraindication of subcutaneous injection.
12. Blood products such as immunoglobulin were received within 30 days before vaccination.
13. Have received immunosuppressive therapy or other immunomodulatory drugs within 6 months before signing the informed consent form (Note: inhaled or topical hormone drugs, except those with an interval of 14 days or more from the date of signing the informed consent form).
14. Those who participated in other clinical studies.
15. Any other situations judged by investigators as not suitable for participating in this study.

The Second stage study (A phase III clinical trial )


1. Contraindications for vaccination.
2. History of allergy to vaccines or drugs.
3. History of Epidemic Cerebrospinal Meningitis.
4. Immunization with any Group A and C meningococcal conjugate vaccine or polysaccharide vaccine.
5. Immunization with any Group A meningococcal conjugate vaccine or polysaccharide vaccine within 12 months.
6. They were vaccinated with live attenuated vaccine within 14 days before vaccination and subunit or inactivated vaccine within 7 days (copy of vaccination certificate of subjects);
7. Participants with convulsion, epilepsy, encephalopathy and psychiatric history or family history of epilepsy.
8. Participant who has congenital heart disease, congenital malformation, Down's syndrome, sickle cell anemia or severe diseases with previous clinical manifestations that need to be excluded, including but not limited to nervous system, genetic defect disease (such as faba bean disease), cardiovascular system, blood and lymphatic system, immune system, kidney, liver, gastrointestinal tract, respiratory system, metabolism and bone system diseases, and History of malignant tumor.
9. Those who developed acute disease or acute attack of chronic disease.
10. Surgical removal of spleen or other important organs for any reason.
11. History of thrombocytopenia or other coagulation disorders may cause contraindication of subcutaneous injection.
12. Blood products such as immunoglobulin were received within 30 days before vaccination.
13. Have received immunosuppressive therapy or other immunomodulatory drugs within 6 months before signing the informed consent form (Note: inhaled or topical hormone drugs, except those with an interval of 14 days or more from the date of signing the informed consent form).
14. Those who participated in other clinical studies.
15. Any other situations judged by investigators as not suitable for participating in this study.
Minimum Eligible Age

2 Years

Maximum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Yunnan Center for Disease Control and Prevention

OTHER

Sponsor Role collaborator

Wei Cun

UNKNOWN

Sponsor Role lead

Responsible Party

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Wei Cun

Professor

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Yan Zheng, Mater

Role: PRINCIPAL_INVESTIGATOR

Yunnan Center for Disease Control and Prevention

Locations

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Yunnan Center for Disease Control and Prevention

Kunming, Yunnan, China

Site Status RECRUITING

Countries

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China

Central Contacts

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Wei Cun, Doctor

Role: CONTACT

Phone: +86-13629464497

Email: [email protected]

Facility Contacts

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Wei Cun, Doctor

Role: primary

Other Identifiers

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20190702

Identifier Type: -

Identifier Source: org_study_id