NCT04329104

Safety and Efficacy of CIS43LS Anti-malaria mAb in Mali

Safety and Efficacy of VRC-MALMAB0100-00-AB (CIS43LS), a Human Monoclonal Antibody Against Plasmodium Falciparum, in a Dose-Escalation Trial and a Randomized, Double-Blind Trial of Adults in Mali

• Status: Completed
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 348 (actual)
• Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) · NIH
• Sex: All
• Age: 18 Years – 55 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to evaluate the safety, tolerability, and efficacy of VRC MALMAB0100-00-AB (CIS43LS), a human monoclonal antibody, against naturally occurring Plasmodium falciparum (Pf) infection.

Detailed description

This study will evaluate the safety, tolerability, and efficacy of VRC MALMAB0100-00-AB (CIS43LS), a human monoclonal antibody, against naturally occurring Plasmodium falciparum (Pf) infection. The first part of the study is an open-label dose-escalation study for safety and tolerability. Participants will be assigned to one of three dose arms. Dosing will begin in the lowest dose arm. Once all participants in that arm reach Day 7 post-infusion, if no safety concerns have arisen, dosing will begin at the subsequent dose level. This process will be repeated until participants complete the third dose arm. Participants will be followed for safety to assess adverse events (AEs) at study visits 1, 3, 7, 14, 21, and 28 days after administration, then monthly through 24 weeks after administration. After the last subject in the highest dose arm reaches Day 7 safety follow-up, an interim safety evaluation will be performed before enrollment begins for the second part of the study. The second part of the study is a randomized, double-blind, placebo-controlled trial to assess safety and protective efficacy of CIS43LS and placebo. Participants in the efficacy study will receive the study agent and be followed at study visits 1, 3, 7, 14, 21, and 28 days later, and once every 2 weeks thereafter through 24 weeks. Primary study assessments include physical examinations and blood collection for identification of Pf infection and other research laboratory evaluations.

Conditions

• Plasmodium Falciparum Infection
• Malaria

Interventions

Type	Name	Description
BIOLOGICAL	VRC-MALMAB0100-00-AB (CIS43LS)	Administered via one-time intravenous infusion
OTHER	Normal saline	Administered via one-time intravenous infusion

Timeline

• Start date: 2021-02-15
• Primary completion: 2022-01-26
• Completion: 2023-07-05
• First posted: 2020-04-01
• Last updated: 2025-04-09
• Results posted: 2024-05-02

Locations

2 sites across 1 country: Mali

Regulatory

• FDA-regulated drug study