ClinicalTrials.gg
Not yet recruitingNCT05969626Updated Aug 9, 2023

Clinical Trial of Freeze-dried Human Rabies Vaccine (Without Serum Vero Cells)

A Phase 3 interventional study of 5-dose group of test vaccine and 5-dose group of control vaccine in Rabies, sponsored by Ningbo Rongan Biological Pharmaceutical Co., Ltd.. Not yet recruiting at 4 sites in China. Open to participants aged 10 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-08-09.

Sponsored by Ningbo Rongan Biological Pharmaceutical Co., Ltd. · Phase 3, Interventional, and Prevention

From the registry’s dates

  • Primary completion was expected by Apr 2024, 2 years 7 months ago, but the record still lists the study as not yet recruiting.
Phase
Phase 3
Study type
Interventional
Enrollment
2,460
Allocation
Randomized
Ages
10 Years to 60 Years
Sex
All
01

Study summary

This study was intended to explore the safety and immunogenicity of the test vaccine compared to the control vaccine. The trial consisted of two phases.

Phase I used an open-ended design. Phase II used a randomized, blinded, parallel-controlled non-inferiority design with the same type of active vaccine, in which the control vaccine 5-dose group and the test vaccine 5 group were kept blinded throughout, the test vaccine 4-dose B group was kept blinded from the other three groups until visit 4 (D14), and the test vaccine 4-dose A group was kept blinded from the control vaccine 5-dose group and the test vaccine 5-dose group until visit 5 (D28).

02

Conditions studied

  • Rabies

Browse trials for

03

In context

Rabies

114 studies on the registry are indexed under Rabies; 15 are open to participants now.

This study's planned enrollment of 2,460 is above the median of 201 across 104 interventional studies indexed under Rabies.

Browse Rabies studies →

Lead sponsor

Ningbo Rongan Biological Pharmaceutical Co., Ltd. is the lead sponsor of 3 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
10 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Inclusion Criteria:

  1. The age of the subject is 10-60 years old (≥10 years old, \<61 years old);
  2. Subjects aged 10-17 and their guardians can provide valid identification; subjects aged 18-60 can provide valid identification;
  3. Subjects aged 10-17 and at least one of their guardians voluntarily participate with , and sign the Informed Consent for minors and adults respectively; Subjects aged 18-60 voluntarily participate with informed consent and sign the adult version of Informed Consent; Basic reading and writing skills are required;
  4. If the subjects are (women of childbearing potential), they should not be pregnant or breastfeeding, have a negative urine pregnancy test before vaccination, and have taken effective measures within 2 weeks before being enrolled in this study; From enrollment in the study until 6 months after full exemption, no family planning and consent to use effective contraception during the study period. Effective forms of birth control include: oral contraceptives (excluding emergency contraceptives)Injectable or embedded contraception, sustained release topical contraceptives, hormonal patches, intrauterine devices, sterilization, abstinence, condoms (male), isolationMembrane, cervical cap, etc.;
  5. * On the day of enrollment, armpit body temperature of subjects >14 years old was \<37.3℃, and armpit body temperature of subjects \<14 years old was \<37.5℃;
  6. Adult subjects or minor subjects and their guardians shall comply with the requirements of the clinical study protocol.

Exclusion Criteria:

  • Exclusion Criteria at 1-dose:

    1. A history of rabies vaccine immunization or rabies virus passive immunization was asked;
    2. A history of grade 2 or 3 injury in animals susceptible to rabies virus (cats, dogs, etc.) within 12 months prior to the first dose of vaccination (the assessment criteria was the Technical Guidelines for Rabies Prevention and Control (2016));
    3. Plan to participate in other clinical trials during the clinical study;
    4. Allergic to any component of the test vaccine; History of severe allergies that require medical intervention, such as anaphylactic shock, allergic laryngeal edema, anaphylactoid purpura, thrombocytopenic purpura, allergic necrosis reaction (Arthus reaction), severe urticaria, dyspnea, angioneurotic edema, etc.;
    5. Have been diagnosed with a congenital or acquired immunodeficiency disease, such as infection, lymphoma, leukemia, systemic lupus erythematosus, rheumatoid arthritis, juvenile rheumatoid arthritis, inflammatory bowel disease, or other immune disease that the investigator has determined may affect the evaluation of the trial;
    6. Known or suspected serious medical conditions upon inquiry include: severe respiratory diseases, poorly controlled chronic diseases, severe liver and kidney diseases, severe cardiovascular diseases, malignant tumors, etc.;
    7. * Medically unmanageable hypertension, such as systolic blood pressure >120mmHg and/or diastolic blood pressure >80mmHg in subjects 10 to 17 years of age prior to enrollment, systolic blood pressure of 140mmHg and/or diastolic blood pressure of 90mmHg in subjects 18 years of age and older;
    8. Coagulation dysfunction (e.g. coagulation factor deficiency, coagulation disorders, abnormalities) or coagulation disorders diagnosed by a physician;
    9. Asplenia, functional asplenia, and any condition resulting in asplenia or splenectomy;
    10. Have received therapy within 3 months prior to vaccination or plan to receive immunosuppressive therapy throughout the study period;
    11. Plan to receive such treatment within 30 days after the first dose to the full dose, such as long-term systemic therapy (2 weeks or more at a dose of >2mg/kg/ day or >20mg/ day of prednisone or equivalent); Allow topical use (such as ointment, eye drops, inhalants or nasal sprays);
    12. * Received immunoglobulins or blood-related products within 3 months prior to vaccination or plan to receive them throughout the study period;
    13. * Acute illness or acute onset of chronic disease within 3 days prior to vaccination;
    14. * Antipyretic, analgesic and anti-allergic drugs were used within 3 days prior to vaccination;
    15. * Have received COVID-19 vaccine or within 28 days prior to vaccination, and have received inactivated vaccines other than COVID-19 inactivated vaccines within 14 days prior to vaccination;
    16. Previous or current diagnosis of neurological or psychiatric disorders (including but not limited to dementia, schizophrenia, bipolar disorder, etc.) or confirmed Seizures, convulsions (excluding febrile convulsions in children 5 years of age and younger)), and other neuropsychiatric disorders deemed unsuitable for participation in this study by the investigator;
    17. Due to various medical, psychological, social, or other conditions that, in the judgment of the investigator, are inconsistent with the study protocol or cannot be complied with.

      For the criteria marked with an (*), if the subject has the conditions specified in that criteria, the visit may be rescheduled when those conditions are no longer present.

      In addition to the examination items set by the protocol, other medical history, surgical history, and medication history were obtained in the form of consultation.

      Criteria for subsequent dose delays:If any of the following conditions occur before any subsequent dose of the subject, the vaccination should be postponed until the vaccination requirements are met.

    <!-- -->

    1. On the day of vaccination, the axillary temperature is measured at 37.3℃ for subjects >14 years old and 37.5℃ for subjects \<14 years old.
    2. Acute illness or acute onset of chronic disease within 3 days prior to vaccination;
    3. Other conditions for which investigators decide vaccination should be delayed. Exclusion criteria for subsequent dose vaccination:If any of the following occurs during the study safety observation period, subjects may not continue with vaccination, but may continue with other study steps at the discretion of the investigator.

    <!-- -->

    1. Newly discovered or newly occurred before vaccination that did not meet the inclusion criteria (except items with *);
    2. Meet the exclusion criteria for the first dose (except for items with *);
    3. Vaccination-related adverse events occur after vaccination and subsequent doses are not considered appropriate by investigators;
    4. The investigator determines any circumstances that require discontinuation of vaccination from a subject risk and benefit perspective.

Exclusion criteria for immunopersistent blood collection:

  1. Incomplete full immunization;
  2. Vaccination with rabies immunoglobulin or other rabies vaccines within 12 months after full immunization;
  3. Long-term use (>15 days) of immunosuppressants or other immunomodulatory drugs (such as glucocorticoids) within 12 months after full vaccination;
  4. Any other circumstances that the investigator believes may affect the evaluation of the trial.
Terms in these criteria, in plain language(8)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

05

Study design

Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
2,460 participants (estimated)

Study arms

  • Experimental
    5-dose group of test vaccine

    Biological: 5-dose group of test vaccine

  • Active comparator
    5-dose group of control vaccine

    Biological: 5-dose group of control vaccine

  • Experimental
    4-dose A group of test vaccine

    Biological: 4-dose A group of test vaccine

  • Experimental
    4-dose B group of test vaccine

    Biological: 4-dose B group of test vaccine

Interventions

  • Biological5-dose group of test vaccine

    Subjects will be vaccinated on days 0, 3, 7, 14, and 28

  • Biological5-dose group of control vaccine

    Subjects will be vaccinated on days 0, 3, 7, 14, and 28

  • Biological4-dose A group of test vaccine

    Subjects will be vaccinated on days 0, 3, 7, 14

  • Biological4-dose B group of test vaccine

    Subjects will be vaccinated on days 0, 3, 7, 28

06

What researchers measure

Primary outcomes

  1. Antibody SCR in 5-dose groups of test vaccine and 5-dose groups of control vaccine

    Antibody Seroconversion rate in 5-dose groups of test vaccine and 5-dose groups of control vaccine

    Time frame: Day 14

  2. Antibody GMC in 5-dose groups of test vaccine and 5-dose groups of control vaccine

    Antibody Geometric Mean Concentration in 5-dose groups of test vaccine and 5-dose groups of control vaccine

    Time frame: Day 14

  3. Antibody SCR in 4-dose groups of test vaccine and 5-dose groups of control vaccine

    Antibody Seroconversion rate in 4-dose groups of test vaccine and 5-dose groups of control vaccine

    Time frame: Day 14

  4. Antibody GMC in 4-dose groups of test vaccine and 5-dose groups of control vaccine

    Antibody Geometric Mean Concentration in 4-dose groups of test vaccine and 5-dose groups of control vaccine

    Time frame: Day 14

  5. Antibody SCR in 5-dose groups of test vaccine and 5-dose groups of control vaccine

    Antibody Seroconversion rate in 5-dose groups of test vaccine and 5-dose groups of control vaccine

    Time frame: Day 42

  6. Antibody SCR in 4-dose groups of test vaccine and 5-dose groups of control vaccine

    Antibody Seroconversion rate in 4-dose groups of test vaccine and 5-dose groups of control vaccine

    Time frame: Day 42

07

Study locations

4 sites
  • Sichuan Center for Disease Control and Prevention
    Chengdu, Sichuan 610041, China
  • Center for Disease Control and Prevention, Mianyang City
    Mianyang, Sichuan 621000, China
    • Youquan Liu · Contact13608120046
  • Shizhong District, Neijiang City Center for Disease Control and Prevention
    Neijiang, Sichuan 511002, China
    • Ling Zhong · Contact18981435233
  • Rongxian Center for Disease Control and Prevention
    Zigong, Sichuan 643199, China
    • Zaixing Li · Contact18990015566
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 9, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05969626
Lead sponsor
Ningbo Rongan Biological Pharmaceutical Co., Ltd.
Responsible party
Sponsor
First posted
Aug 1, 2023
Start date
Aug 2023 (estimated)
Primary completion
Apr 2024 (estimated)
Completion
Dec 2024 (estimated)
Last update
Aug 9, 2023

Study contacts

Ting Huang
Contact
cocoht@163.com
13330993324

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Jul 2023. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion