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TetanusPhase 1NCT07149454

Clinical Trial to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection

A Phase 1 study testing Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection and Human Tetanus Immunoglobulin in people with Tetanus, run by Lanzhou Institute of Biological Products Co., Ltd at 1 site in China.

Enrolling by invitation

Enrolling by invitation. The study team selects and invites participants, usually from an existing group of patients.

Sites and contacts
Official record
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Trial summary

A Randomized, Double-blind, Controlled, Dose-escalation Phase I Clinical Trial to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of a Single Intramuscular Injection of Recombinant Human Anti-tetanus toxin Monoclonal Antibody Injection in Healthy Participants. Read more about this study

Who is it for?
Ages 18 to 60 yearsHealthy volunteers can take part
Conditions the study is for
Tetanus
What is being tested?
Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection and Human Tetanus Immunoglobulin
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
68 participants
Where
1 siteChina
Study dates
18 Aug 2025to 24 Jun 2026
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 60 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Participants voluntarily agree to participate in the study and sign the informed consent form (ICF);
  • Aged 18-60 years (inclusive) at the time of ICF signing, regardless of gender, with valid legal identification;
  • Body weight ≥45.0 kg for female participants and ≥50.0 kg for male participants, with a body mass index (BMI) between 18.0 and 28.0 kg/m² (inclusive) (BMI = weight [kg]/height [m²]);
  • Female participants of childbearing potential must have no plans for pregnancy or egg donation during the trial and for 6 months after investigational product administration and must voluntarily use at least one effective contraceptive method. Male participants must have no plans for pregnancy or sperm donation during the trial and for 6 months after investigational product administration, and either the male participant or his female partner of childbearing potential must voluntarily use at least one effective contraceptive method.

Who cannot join

  • Known allergy to the investigational product (including excipients or similar drugs), or documented hypersensitivity to essential materials used in the trial (e.g., skin disinfectants); or history of severe allergic diseases, hypersensitivity to monoclonal antibodies, or allergic constitution deemed by investigators to compromise participant safety;
  • Acute/chronic medical conditions that may significantly affect drug metabolism or safety assessments per investigator judgment;
  • History of autoimmune diseases or immunodeficiency disorders (including HIV-positive screening);
  • Chronic hepatitis B/C (HBsAg or HCV antibody-positive during screening);
  • History/family history of seizures, epilepsy, or neuropsychiatric disorders;
  • Major surgery within 3 months (90 days) prior to dosing, or planned surgery during the trial;
Show all 23Show fewer
  • Prior tetanus infection or use of passive tetanus immunoglobulins within 6 months (180 days) before dosing;
  • Tetanus-toxoid-containing vaccination (e.g., DTaP, Td, meningococcal conjugate vaccines) within 10 years;
  • Positive tetanus IgG rapid test during screening;
  • Receipt of live/inactivated vaccines within 1 month (30 days) before dosing or planned vaccination during the trial;
  • Systemic corticosteroids/immunosuppressants within 3 months (90 days) (excluding inhaled/topical use);
  • Prescription/OTC/herbal medications within 14 days or <5 half-lives (whichever is longer) prior to dosing, particularly those interfering with the investigational monoclonal antibody's PK/safety (per criterion #11 for exceptions);
  • Participation in other clinical trials involving investigational drugs/devices within 3 months (90 days) or planned concurrent enrollment;
  • Excessive alcohol intake (>14 units/week; 1 unit = 360 mL beer/45 mL 40% liquor/150 mL wine), alcohol use within 48 hours pre-dose, or positive breathalyzer test;
  • Heavy smoking (>10 cigarettes/day or equivalent) within 1 month (30 days);
  • Blood loss/donation >400 mL within 3 months (90 days) or planned donation/transfusion during the trial;
  • Inability to avoid strenuous exercise within 14 days post-dosing;
  • Substance abuse history or positive drug screening;
  • Positive syphilis antibody test during screening;
  • Clinically significant abnormalities in screening assessments (e.g., ALT >1.5×ULN, creatinine >ULN, neutrophils <1.5×10⁹/L, platelets <100×10⁹/L, hemoglobin <100 g/L);
  • Pregnant/lactating women or positive pregnancy test;
  • Needle phobia, poor venous access, or intolerance to venipuncture;
  • Any other condition deemed by investigators to preclude compliance or safe participation.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

China1 site
  • Lanzhou Institute of Biological Products Co., Ltd.

    Lanzhou, Gansu, 730000

Other trials in China

About this study

Official title: A Randomized, Double-blind, Controlled, Dose-escalation Phase I Clinical Trial to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of a Single Intramuscular Injection of Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection in Healthy Participants

A Randomized, Double-blind, Controlled, Dose-escalation Phase I Clinical Trial to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of a Single Intramuscular Injection of Recombinant Human Anti-tetanus toxin Monoclonal Antibody Injection in Healthy Participants.

Read the detailed description

The primary objective of the study : evaluate the safety and tolerability of a single intramuscular injection of recombinant human anti-tetanus toxin monoclonal antibody injection in healthy adult participants. The secondary objectives are:

  1. to evaluate the pharmacokinetic (PK) characteristics of a single intramuscular injection of recombinant human anti-tetanus toxin monoclonal antibody injection in healthy adult participants;
  2. to evaluate the pharmacodynamic (PD) characteristics of a single intramuscular injection of recombinant human anti-tetanus toxin monoclonal antibody injection in healthy adult participants;
  3. to evaluate the immunogenicity of a single intramuscular injection of recombinant human anti-tetanus toxin monoclonal antibody injection in healthy adult participants.
Conditions
Tetanus
Being tested
Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection, Human Tetanus Immunoglobulin, Placebo
Keywords
Tetanus Antitoxin
Medical subject headings
Tetanus

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody InjectionDrug

    intramuscular injection

  • Human Tetanus ImmunoglobulinDrug

    intramuscular injection

  • PlaceboDrug

    intramuscular injection

Study groups in NCT07149454
Study groupRoleWhat they receive
Group 1 (0.2 mg dose group)ExperimentalA single dose was administered to 3 enrolled participants, who were randomized in a 2:1 ratio to receive either the recombinant human anti-tetanus toxin monoclonal antibody injection or placebo. After all participants completed the 14-day safety observation period and were evaluated as safe and tolerable, administration for the next dose group could proceed.
Receives: Drug: Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection; Drug: Placebo
Group 2 (2 mg dose group)ExperimentalA single dose was administered to 8 enrolled participants, who were randomized in a 3:1 ratio to receive either the recombinant human anti-tetanus toxin monoclonal antibody injection or placebo. After all participants completed the 14-day safety observation period for the current dose group and were evaluated as safe and tolerable, the trial proceeded to the next dose group.
Receives: Drug: Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection; Drug: Placebo
Group 3 (5 mg dose group)ExperimentalA single dose was administered to 15 enrolled participants, who were randomized in a 4:1 ratio to receive either the recombinant human anti-tetanus toxin monoclonal antibody injection or placebo. After all participants completed the 14-day safety observation period for the current dose group and were evaluated as safe and tolerable, the study proceeded to the next cohort.
Receives: Drug: Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection; Drug: Placebo
Group 4 (10 mg dose group)ExperimentalA single dose was administered to 27 enrolled participants, who were randomized in a 4:4:1 ratio to receive either: the recombinant human anti-tetanus toxin monoclonal antibody injection, human tetanus immunoglobulin (HTIG) injection, or placebo. After all participants completed the 14-day safety observation period for the current dose group and were evaluated as safe and tolerable, the study advanced to the next phase.
Receives: Drug: Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection; Drug: Human Tetanus Immunoglobulin; Drug: Placebo
Group 5 (15 mg dose group)ExperimentalA single dose was administered to 15 enrolled participants who were randomized in a 4:1 ratio to receive either the recombinant human anti-tetanus toxin monoclonal antibody injection or placebo. As this represented the highest planned dose level, the sponsor and investigators jointly determined whether to continue dose escalation based on the absence of tolerability concerns.
Receives: Drug: Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection; Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. The occurrence of adverse events (AEs)/serious adverse events (SAEs) (including injection site reactions) from administration to the last visit

    Types of Adverse Events / Serious Adverse Reactions

    Measured: 105 days

  2. The occurrence of adverse events (AEs)/serious adverse events (SAEs) (including injection site reactions) from administration to the last visit

    Incidence of Adverse Events/Serious Adverse Reactions

    Measured: 105Days

  3. The occurrence of adverse events (AEs)/serious adverse events (SAEs) (including injection site reactions) from administration to the last visit

    Severity of Adverse Events (AEs)/Serious Adverse Reactions (SARs)

    Measured: 105Days

  4. The occurrence of adverse events (AEs)/serious adverse events (SAEs) (including injection site reactions) from administration to the last visit

    Relationship of Adverse Events (AEs)/Serious Adverse Reactions (SARs) to the Investigational Product

    Measured: 105Days

  5. The clinical significance of changes in observation indicators at different time points after drug injection compared to pre-administration.

    12-lead electrocardiogram examination:P Wave

    Measured: 105Days

  6. The clinical significance of changes in observation indicators at different time points after drug injection compared to pre-administration.

    12-lead electrocardiogram examination:QRS Complex

    Measured: 105Days

  7. The clinical significance of changes in observation indicators at different time points after drug injection compared to pre-administration.

    12-lead electrocardiogram examination:T Wave

    Measured: 105Days

  8. The clinical significance of changes in observation indicators at different time points after drug injection compared to pre-administration.

    12-lead electrocardiogram examination:U Wave

    Measured: 105Days

  9. The clinical significance of changes in observation indicators at different time points after drug injection compared to pre-administration.

    12-lead electrocardiogram examination:PR Interval

    Measured: 105Days

  10. The clinical significance of changes in observation indicators at different time points after drug injection compared to pre-administration.

    12-lead electrocardiogram examination:QT Interval

    Measured: 105Days

  11. The clinical significance of changes in observation indicators at different time points after drug injection compared to pre-administration.

    12-lead electrocardiogram examination:ST Segment

    Measured: 105Days

  12. Clinically significant changes in laboratory parameters from baseline at specified timepoints post-dosing

    Complete Blood Count (CBC)

    Measured: 105Days

Secondary outcomes (15)
  1. Pharmacokinetic Endpoints

    Cmax: Maximum plasma concentration

    Measured: 105Days

  2. Pharmacokinetic Endpoints

    AUC~0-t: Area under the curve from 0 to last measurable timepoint

    Measured: 105Days

  3. Pharmacokinetic Endpoints

    AUC~0-∞: Area under the curve extrapolated to infinity

    Measured: 105Days

  4. Pharmacokinetic Endpoints

    T~max: Time to reach Cmax

    Measured: 105Days

  5. Pharmacokinetic Endpoints

    t~1/2: Elimination half-life

    Measured: 105Days

  6. Pharmacokinetic Endpoints

    CL/F: Apparent clearance

    Measured: 105Days

  7. Pharmacokinetic Endpoints

    Vz/F:Apparent Volume of Distribution during Terminal Phase

    Measured: 105Days

  8. Pharmacokinetic Endpoints

    MRT:Mean Residence Time

    Measured: 105Days

  9. Pharmacodynamic Endpoints

    Change in tetanus-neutralizing antibody titer from baseline within 12 hours post-dose across treatment groups

    Measured: 0 to 12 hours

  10. Pharmacodynamic Endpoints

    Percentage of participants with anti-tetanus toxin neutralizing antibody titers ≥0.01 IU/mL and ≥0.1 IU/mL at each timepoint post-dose across treatment groups

    Measured: 105Days

  11. Pharmacodynamic Endpoints

    Percentage of participants with anti-tetanus toxin neutralizing antibody titer increases from baseline ≥0.01 IU/mL and ≥0.1 IU/mL at each timepoint post-dose across treatment groups

    Measured: 105Days

  12. Exposure-Response Analysis, E-R Analysis

    Exposure-response (E-R) analysis of serum drug concentrations versus anti-tetanus toxin neutralizing antibody titers at each post-dose timepoint across treatment groups

    Measured: 105Days

  13. Immunogenicity Endpoints

    Anti-drug antibody (ADA) titers against the investigational drug (recombinant human anti-tetanus toxin monoclonal antibody) in serum at each post-dose timepoint across treatment groups

    Measured: 105Days

  14. Immunogenicity Endpoints

    Incidence of anti-drug antibodies (ADA) against the investigational drug (recombinant human anti-tetanus toxin monoclonal antibody) in serum post-dose across treatment groups

    Measured: 105Days

  15. Immunogenicity Endpoints

    In participants who tested positive for anti-drug antibodies (ADA), the incidence of neutralizing antibodies (NAb) was assessed.

    Measured: 105Days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Sep 2025
  2. Study start18 Aug 2025
  3. Primary completion27 May 2026 (estimated)
  4. Study completion24 Jun 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
68 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07149454
Sponsor's protocol ID
LIBP-TAB-01
Status last verified
Aug 2025
First submitted
3 Aug 2025
Last updated
28 Jan 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Recombinant Human Anti-Tetanus Toxin Monoclonal Antibody Injection and Human Tetanus Immunoglobulin in people with Tetanus, run by Lanzhou Institute of Biological Products Co., Ltd at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 23 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: enrolling by invitation, as of the sponsor's last update on 28 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

The occurrence of adverse events (AEs)/serious adverse events (SAEs) (including injection site reactions) from administration to the last visit (time frame: 105 days). The study lists 12 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Jan 2026.

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