- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04238689
Safety, Tolerability, and Pharmacokinetics and Pharmacodynamics of TB31F (TB31F)
June 14, 2022 updated by: Radboud University Medical Center
Phase 1 Study to Evaluate the Safety, Tolerability, and Pharmacokinetics and Pharmacodynamics of Monoclonal Antibody TB31F in Healthy Malaria-naïve Adults in the Netherlands
This phase 1 study aims to assess the safety and tolerability of monoclonal antibody TB31F administered intravenously or subcutaneously at escalating dose levels in healthy, malaria naïve, adults.
This study will also evaluate the pharmacokinetics of TB31F and the functional activity of mAb TB31F in the standard membrane feeding assay.
Study Overview
Detailed Description
This phase 1 study aims to assess the safety and tolerability of monoclonal antibody (mAb) TB31F administered intravenously or subcutaneously in healthy, malaria naïve, adults at the Radboud University Medical Center (Radboudumc).
Five groups will receive a single dose of mAb TB31F.
Group 1 (n=5) will receive 0.1 mg/kg TB31F, Group 2 (n=5) will receive 1 mg/kg TB31F, group 3 (n=5) will receive 3 mg/kg TB31F, and group 4 (n=5) will receive 10 mg/kg mAb TB31F intravenously.
Group 5 will receive 100mg TB31F subcutaneously.
Twenty-five (n=25) subjects will be enrolled, as well as 1 reserve subject per group.
Safety follow-up will be done at following times: baseline, end of infusion (EOI), 1, 3, 6 and 24 hours and 2, 7, 14, 21, 28, 56 and 84 days after administration.
Extra follow-up visits at 4 and 10 days after administration for collection of serum/plasma for pharmacokinetic and pharmacodynamic measurements will be performed in group 5.
Study Type
Interventional
Enrollment (Actual)
25
Phase
- Phase 1
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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Gelderland
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Nijmegen, Gelderland, Netherlands, 6525 GA
- Radboud University Medical Center
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 35 years (Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Subject must sign written informed consent to participate in the trial.
- Subject is able to understand planned study procedures and demonstrate comprehension of the protocol procedures and knowledge of study by passing a quiz (assessment of understanding).
- In the opinion of the investigator, the subject can and will comply with the requirements of the protocol.
- Subjects are available to attend all study visits and are reachable by phone throughout the entire study period from day -1 until day 84 (end of study).
- The subject will remain within reasonable travelling distance from the study center from day -1 until day +7 after mAb TB31F infusion.
- Subject is a male or non-pregnant and non-lactating female age ≥ 18 and ≤ 35 years and in good health at time of mAb infusion.
- Subject agrees to their general practitioner (GP) being informed about participation in the study and agrees to sign a form to request the release by their GP, and medical specialist when necessary, of any relevant medical information concerning possible contra-indications for participation in the study to the investigator(s).
- The subject agrees to refrain from blood donation to Sanquin or for other purposes throughout the study period according to current Sanquin guidelines.
- Female subjects of non-childbearing potential may be enrolled in the study. Non-childbearing potential is defined as pre-menarche, current bilateral tubal ligation or occlusion, hysterectomy, bilateral ovariectomy or post-menopause. All subjects must agree to use continuous adequate contraception until 2 months after completion of the study. Female subjects must agree not to breastfeed from 30 days prior to mAb infusion until 2 months after completion of the study. Female subject must have a negative pregnancy test at the inclusion visit.
Exclusion Criteria:
Acute or chronic disease at time of TB31F administration, clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormality, as determined by physical examination or laboratory screening tests:
- Acute disease is defined as the presence of a moderate or severe illness with or without fever. Subjects with a minor illness on the day of TB31F administration will be (temporarily) excluded from participation, but may be re-evaluated for inclusion at a later date. Subjects with a positive SARS-CoV2 test at inclusion will be (temporarily) excluded from participation but may be re-evaluated for inclusion at a later date (following current Radboudumc guidelines).
- Fever is defined as an oral, axillary or tympanic temperature ≥ 38.0°C (100.4°F). The preferred route for recording temperature in this study will be oral.
- Any abnormal and clinically significant baseline laboratory screening tests of alanine aminotransferase, aspartate aminotransferase, creatinine, hemoglobin, platelet count or total white blood cell count, as defined in the protocol according to the FDA Toxicity Grading Scale for Healthy Adult and Adolescent Subjects Enrolled in Preventative Vaccine Clinical Trials.
- History of malignancy of any organ system (other than localized basal cell carcinoma of the skin), treated or untreated, within the past 5 years.
- Chronic use of i) immunosuppressive drugs, iii) or other immune modifying drugs within three months prior to study onset (inhaled and topical corticosteroids and oral anti-histamines exempted) or expected use of such during the study period.
- Positive urine toxicology test for cannabis, cocaine or amphetamines at screening or at inclusion.
- Screening tests positive for Human Immunodeficiency Virus (HIV), active Hepatitis B Virus (HBV), Hepatitis C Virus (HCV).
- Use of any investigational or non-registered product (drug or vaccine) during the study period other than the study product.
- Participation in any other clinical study in the 30 days prior to the start of the study or during the study period.
- Prior receipt of an investigational antimalarial monoclonal antibody.
- History of adverse reactions to monoclonal antibodies.
- Administration of immunoglobulin and/or any blood products within the three months preceding the first dose of study mAb or planned administration during the study period.
- Any history of malaria, positive serology for P. falciparum, or previous participation in any malaria (vaccine) study or Controlled Human Malaria Infection.
- Body weight >= 115 kg
- Being an employee or student of the department of Medical Microbiology or Medium Care of the Radboudumc, or a person otherwise related to the investigator other than a professional relationship for clinical trial purpose only.
- History of drug or alcohol abuse interfering with normal functioning in the period of one year prior to study onset.
- Any other condition or situation that would, in the opinion of the investigator, place the subject at an unacceptable risk of injury or render the subject unable to meet the requirements of the protocol.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Non-Randomized
- Interventional Model: Sequential Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Group 1 - 0.1mg/kg TB31F
0.1 mg/kg of monoclonal antibody TB31F is administered intravenously to 5 subjects.
Subjects will be observed for the occurrence of any adverse events.
There will be a minimum of 48 hours between TB31F administration to each subsequent volunteer.
Subjects will be followed-up for 84 days.
Escalation to the next higher dosage group will be dependent upon no safety signals arising.
|
Monoclonal antibody
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Experimental: Group 2 - 1mg/kg TB31F
1 mg/kg of monoclonal antibody TB31F is administered intravenously to 5 subjects.
TB31F administration will be staggered such that the first subject will be administered mAb TB31F and observed for the occurrence of any adverse events.
The second subject will not receive their dose of TB31F sooner than 2 days after the first subject has received TB31F.
The remaining three subjects will receive their TB31F dose no sooner than 2 days after the second subject has been administered TB31F, with at least a one hour interval in administration of TB31F between each subject.
Subjects will be followed-up for 84 days.
Escalation to the next higher dosage group will be dependent upon no safety signals arising.
|
Monoclonal antibody
|
Experimental: Group 3 - 3mg/kg TB31F
3 mg/kg of monoclonal antibody TB31F is administered intravenously to 5 subjects.
TB31F administration will be staggered such that the first subject will be administered mAb TB31F and observed for the occurrence of any adverse events.
The second subject will not receive their dose of TB31F sooner than 2 days after the first subject has received TB31F.
The remaining three subjects will receive their TB31F dose no sooner than 2 days after the second subject has been administered TB31F, with at least a one hour interval in administration of TB31F between each subject.
Subjects will be followed-up for 84 days.
Escalation to the next higher dosage group will be dependent upon no safety signals arising.
|
Monoclonal antibody
|
Experimental: Group 4 - 10mg/kg TB31F
10 mg/kg of monoclonal antibody TB31F is administered intravenously to 5 subjects.
TB31F administration will be staggered such that the first subject will be administered mAb TB31F and observed for the occurrence of any adverse events.
The second subject will not receive their dose of TB31F sooner than 2 days after the first subject has received TB31F.
The remaining three subjects will receive their TB31F dose no sooner than 2 days after the second subject has been administered TB31F, with at least a one hour interval in administration of TB31F between each subject.
Subjects will be followed-up for 84 days.
|
Monoclonal antibody
|
Experimental: Group 5 - 100mg TB31F
100mg of monoclonal antibody TB31F is administered subcutaneously to 5 subjects.
TB31F administration will be staggered such that the first subject will be administered mAb TB31F and observed for the occurrence of any adverse events.
The second subject will not receive their dose of TB31F sooner than 2 days after the first subject has received TB31F.
The remaining three subjects will receive their TB31F dose no sooner than 2 days after the second subject has been administered TB31F, with at least a one hour interval in administration of TB31F between each subject.
Subjects will be followed-up for 84 days.
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Monoclonal antibody
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number and Severity of Adverse Events After TB31F Administration
Time Frame: Throughout study: solicited local adverse events (day 0 - day 7); solicited general adverse events and clinically significant laboratory abnormalities (day 0 - day 28); unsolicited adverse events (day 0 - day 84), serious adverse events (day 0 - day 84)
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Throughout study: solicited local adverse events (day 0 - day 7); solicited general adverse events and clinically significant laboratory abnormalities (day 0 - day 28); unsolicited adverse events (day 0 - day 84), serious adverse events (day 0 - day 84)
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Serum Concentration of TB31F
Time Frame: All groups: 6 hours, 24 hours, 48 hours, day 7, day 14, day 21, day 28, day 56, day 84. Groups 1-4 only: end of infusion, 1 hour, 3 hours. Group 5 only: day 4 and day 10.
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The serum concentration of TB31F will be measured in all subjects throughout the study (until day 84) by Pfs48/45 antigen ELISA.
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All groups: 6 hours, 24 hours, 48 hours, day 7, day 14, day 21, day 28, day 56, day 84. Groups 1-4 only: end of infusion, 1 hour, 3 hours. Group 5 only: day 4 and day 10.
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Pharmacodynamics/Functional Transmission-reducing Activity of TB31F
Time Frame: Groups 1 to 4: throughout study until day 84 (baseline, end of infusion, day 7, day 28, day 56, day 84). Group 5: baseline, day 2, day 4, day 7. day 10, day 14, day 28, day 56, day 84.
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Transmission-reducing activity (TRA) of serum TB31F will be assessed in all subjects throughout the study (until day 84) by standard membrane feeding assays (SMFA).
TRA is expressed as the percentage reduction in oocysts in mosquitoes fed on gametocytes in the presence of participants' serum, compared to oocysts in mosquitoes fed on gametocytes in the presence of pooled naïve serum (control).
Given the limited precision of low TRA estimates and the historical threshold value of >80% TRA to support clinical development of transmission-blocking vaccines, TRA >80% was pre-defined as the efficacy threshold of interest.
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Groups 1 to 4: throughout study until day 84 (baseline, end of infusion, day 7, day 28, day 56, day 84). Group 5: baseline, day 2, day 4, day 7. day 10, day 14, day 28, day 56, day 84.
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Collaborators
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
February 14, 2020
Primary Completion (Actual)
March 4, 2021
Study Completion (Actual)
March 4, 2021
Study Registration Dates
First Submitted
December 23, 2019
First Submitted That Met QC Criteria
January 22, 2020
First Posted (Actual)
January 23, 2020
Study Record Updates
Last Update Posted (Actual)
March 27, 2023
Last Update Submitted That Met QC Criteria
June 14, 2022
Last Verified
January 1, 2021
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- NL69779.091.19
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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