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Healthy VolunteersPhase 1NCT06408857

Study To Evaluate Safety, Tolerability, and Pharmacokinetics of MAM01 in African Population

A Phase 1 study testing MAM01 300 mg SC, MAM01 300 mg IM and MAM01 2000 mg IV in people with Healthy Volunteers, run by Gates Medical Research Institute at 2 sites in Uganda.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study will test a new drug (MAM01) to find which doses are safe and could help prevent people from getting malaria for at least 4 months. The study will take place in parts of Africa where malaria is common. Read more about this study

Who is it for?
Ages 3 months to 55 yearsHealthy volunteers can take part
Conditions the study is for
Healthy Volunteers
What is being tested?
MAM01 300 mg SC, MAM01 300 mg IM and MAM01 2000 mg IV
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
125 participants
Where
2 sitesUganda
Study dates
28 Mar 2025to 28 May 2026
Phase
Phase 1
Are there results?
None posted in the registry

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 3 months to 55 years
  • All sexes
  • Healthy volunteers accepted
  • Child, Adult

Who may be able to join

  • PART A
  • Male or female adults aged 18 to 55 years inclusive at the time of signing the informed consent form (ICF), who are capable of, and willing to provide, informed consent
  • Healthy, as determined by Investigator assessment, including medical history, physical examination, and screening laboratory results
  • All dosing groups: hemoglobin level ≥ 8 grams per deciliter (g/dL)
  • All dosing groups: living within local jurisdiction of trial site(s) and available for the duration of the trial for all cohorts
  • Female participants of childbearing potential must be nonpregnant and agree to avoid becoming pregnant by using an acceptable contraception method
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  • PART B
  • Age Cohort 2: male or female children aged 2 years to <5 years at the time their parent or Legally Authorized Representative (LAR) signs the ICF
  • Age Cohort 3: male or female children aged 12 months to <24 months at the time their parent or LAR signs the ICF
  • Age Cohort 4: male or female infant children aged 3 months to <12 months and weighing at least 5 kilograms (kg) at the time their parent or LAR signs the ICF
  • Healthy, as determined by Investigator assessment, including medical history, physical examination, and screening laboratory results
  • Hemoglobin level ≥ 8g/dL
  • Height and weight Z-scores ≥-2
  • Living within local jurisdiction of trial site(s) and available for the duration of the trial

Who cannot join

  • PART A \& PART B
  • Within 48 hours prior to randomization, acute febrile illness
  • Sickle cell disease or history of splenectomy
  • Use of antimalarial chemoprevention or treatment, and/or antibiotics with known antimalarial effects (eg, clotrimoxazole, azithromycin, tetracyclines) within 30 days prior to dosing
  • Enrolled in another clinical trial within 90 days prior to Screening or planning to participate in another trial during, or within 1 year following, their participation in this trial
  • Received any doses of a malaria vaccine or other monoclonal antibodies (mAb) to Pf
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  • Eligible to receive a malaria vaccine (RTS, S/AS01 or R21/Matrix-M) at screening or if it is expected to become available during the period of the trial.
  • History of allergy or hypersensitivity or contraindications to trial drugs (including those used as empirically treatment for Pf to clear any existing parasitemia), excipients or related substances
  • Any history of severe allergic reaction with generalized urticaria, angioedema, or anaphylaxis prior to enrollment that has a reasonable risk of recurrence during the trial
  • History of any autoimmune disease or immunodeficiency or other impairment to the immune system, including HIV infection
  • Use of chronic (≥ 14 days) immunosuppressive agents including systemic steroids (eg, prednisone >10 milligrams per day [mg/day]) within 30 days prior to dosing. Use of inhaled or topical corticosteroids is permitted
  • Bleeding disorder diagnosed by a doctor (eg, factor deficiency, coagulopathy, or platelet disorder requiring special precautions) or significant bruising with blood draws
  • Receipt of immunoglobulins and/or blood products within the past 6 months
  • Any current uncontrolled medical or psychiatric condition, or substance abuse problems that in the opinion of the Investigator, will make it unlikely for participant to comply with the protocol, may interfere with study assessments, or could jeopardize the safety of the participant
  • Any contraindication for a subcutaneous injection, intravenous injection, or intramuscular injection, as applicable
  • For Part A, female participants who are breastfeeding, pregnant, or unable or unwilling to adhere to required contraception
  • For Part B, in the opinion of the Investigator, the parent or LAR may not be able to ensure participant compliance with the requirements of the trial

Trial locations and contacts

2 sites in 1 country.

Uganda2 sites
  • JCRC-Joint Clinical Research Centre

    Kampala, 10005

  • IDRC-Infectious Disease Research Collaboration, IDRC Tororo Hospital Station Road

    Tororo, 749

Other trials in Uganda

About this study

Official title: A Phase 1b, Age De-Escalation/Dose Escalation Trial to Evaluate Safety, Tolerability, and Pharmacokinetics of MAM01 in an African Population of Adults and Children in a Setting of Perennial Malaria Transmission

This study will test a new drug (MAM01) to find which doses are safe and could help prevent people from getting malaria for at least 4 months. The study will take place in parts of Africa where malaria is common. Part A is an open-label study conducted in healthy adults whereas Part B is double-blind study conducted in young children and infants. Both the parts will evaluate the safety, tolerability and pharmacokinetics of MAM01.

Read the detailed description

This is a Phase 1b, age de-escalation/dose escalation trial that will be conducted in a setting of perennial Plasmodium falciparum (malaria parasite) transmission in Africa. The study will be conducted in 2 parts: Part A (Dose Escalation in Adults); Part B (Age De-escalation/Dose Escalation in Younger Children and infants).

Being tested
MAM01 300 mg SC, MAM01 300 mg IM, MAM01 2000 mg IV, MAM01 190 mg SC, MAM01 225 mg SC
Keywords
Malaria, Plasmodium falciparum, MAM01, De-Escalation, Dose Escalation, Perennial Malaria Transmission, Antibody, Monoclonal, Prevention, Pediatric, mAb-1797
Medical subject headings
Malaria, Malaria, Falciparum

What participants receive

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

  • MAM01 300 mg SCDrug

    MAM01 300 mg will be administered SC

  • MAM01 300 mg IMDrug

    MAM01 300 mg will be administered IM route

  • MAM01 2000 mg IVDrug

    MAM01 2000 mg will be administered IV

  • MAM01 190 mg SCDrug

    MAM01 190 mg will be administered SC

  • MAM01 225 mg SCDrug

    MAM01 225 mg will be administered SC

  • MAM01 150 mg SCDrug

    MAM01 150 mg will be administered SC

  • MAM01 150 mg IMDrug

    MAM01 150 mg will be administered IM

  • MAM01 150 mg IVDrug

    MAM01 150 mg will be administered IV

  • Placebo SCDrug

    Placebo will be administered SC

  • Placebo IVDrug

    Placebo will be administered IV.

  • Placebo IMDrug

    Placebo will be administered IM

Study groups in NCT06408857
Study groupRoleWhat they receive
Part A: Cohort 1a (Healthy Adults): 300 milligrams (mg) MAM01 subcutaneously (SC)ExperimentalParticipants will receive MAM01.
Receives: Drug: MAM01 300 mg SC
Part A: Cohort 1b (Healthy Adults): 300 mg MAM01 intramuscularly (IM)ExperimentalParticipants will receive MAM01.
Receives: Drug: MAM01 300 mg IM
Part A: Cohort 1c (Healthy Adults): 2000 mg MAM01 intravenously (IV)ExperimentalParticipants will receive MAM01.
Receives: Drug: MAM01 2000 mg IV
Part B: Cohort 2a (Healthy Younger Children): 190 mg MAM01 or placebo SCExperimentalParticipants will be randomized in 3:1 ratio (MAM01 : PBO)
Receives: Drug: MAM01 190 mg SC; Drug: Placebo SC
Part B: Cohort 2b (Healthy Younger Children): 225 mg MAM01 or placebo SCExperimentalParticipants will be randomized in 3:1 ratio (MAM01 : PBO)
Receives: Drug: MAM01 225 mg SC; Drug: Placebo SC
Part B: Cohort 3a (Healthy Infants): 150 mg MAM01 or placebo SCExperimentalParticipants will be randomized in 3:1 ratio (MAM01 : PBO)
Receives: Drug: MAM01 150 mg SC; Drug: Placebo SC
Part B: Cohort 3b (Healthy Infants): 150 mg MAM01 or placebo IMExperimentalParticipants will be randomized in 3:1 ratio (MAM01 : PBO)
Receives: Drug: MAM01 150 mg IM; Drug: Placebo IM
Part B: Cohort 3c (Healthy Infants): 150 mg MAM01 or placebo IVExperimentalParticipants will be randomized in 3:1 ratio (MAM01 : PBO)
Receives: Drug: MAM01 150 mg IV; Drug: Placebo IV
Part B: Cohort 4a (Healthy Infants): 150 mg MAM01 or placebo SCExperimentalParticipants will be randomized in 3:1 ratio (MAM01 : PBO)
Receives: Drug: MAM01 150 mg SC; Drug: Placebo SC
Part B: Cohort 4b (Healthy Infants): 150 mg MAM01 or placebo IMExperimentalParticipants will be randomized in 3:1 ratio (MAM01 : PBO)
Receives: Drug: MAM01 150 mg IM; Drug: Placebo IM
Part B: Cohort 4c (Healthy Infants): 150 mg MAM01 or placebo IVExperimentalParticipants will be randomized in 3:1 ratio (MAM01: PBO)
Receives: Drug: MAM01 150 mg IV; Drug: Placebo IV

What is being measured

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

  1. Number of participants reporting Treatment-emergent adverse events (TEAEs)

    Measured: Up to 28 days post dose (Part A and B)

  2. Number of participants reporting serious adverse events (SAEs), adverse events of special interest (AESI), and AEs leading to discontinuation

    Measured: Up to 182 days post dose

  3. Number of participants reporting solicited systemic AEs and solicited injection site AEs (applicable to IM dosing)

    Measured: Up to 7 days post dose

  4. Number of participants reporting solicited systemic AEs and solicited injection site AEs (applicable to SC dosing)

    Measured: Up to 7 days post dose

Secondary outcomes (5)
  1. Percentage of participants with graded abnormal clinical hematology and chemistry laboratory results

    Measured: Up to 28 days post dose

  2. Maximal observed blood concentration of MAM01 following the first dose (Cmax1)

    Capillary blood samples will be collected for the analysis pharmacokinetic parameters. Blood concentrations of MAM01 will be measured using a validated immunoassay.

    Measured: Pre- and post-dose (IV dosing groups only) at Day 1, 4, 7, 14, 28, 56, 84, 112, 140, and 182

  3. Concentration at Day 182 (C182)

    Measured: At Day 182 post first dose

  4. Total Area Under the Concentration Curve (AUC) Day 0 - Day 182

    Measured: From 0 to 182 days post dose

  5. Percentage of participants with antidrug antibodies (ADAs) to MAM01

    Measured: At Days 1, 28, 84, and 182

Timeline

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

  1. First posted10 May 2024
  2. Study start28 Mar 2025
  3. Primary completion28 May 2026
  4. Study completion28 May 2026

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
125 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06408857
Sponsor's protocol ID
Gates MRI-MAM01-103
Status last verified
Jun 2026
First submitted
7 May 2024
Last updated
3 Jun 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: All IPD data that underlie the results presented herein

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing MAM01 300 mg SC, MAM01 300 mg IM and MAM01 2000 mg IV in people with Healthy Volunteers, run by Gates Medical Research Institute at 2 sites in Uganda.

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 14 inclusion and 17 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: finished, as of the sponsor's last update on 3 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Uganda. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Number of participants reporting Treatment-emergent adverse events (TEAEs) (time frame: Up to 28 days post dose (Part A and B)). The study lists 4 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 3 Jun 2026.

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