CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 912 enrolled
Drug / intervention
L9LS +1 moredrug
Likely dose
L9LS administered subcutaneously; specific dose levels not stated in intervention descriptionAI-extracted
Key inclusion· 6
  • Healthy children aged 5 months to 10 years (Part 1) or 5-59 months (Part 2)
  • Weight ≥5 kg with specified upper limits by part and dose group (≤30 kg Part 1, ≤22.5 kg Part 2, ≤20 kg for 30 mg/kg group, ≤15 kg for 40 mg/kg group)
  • Hemoglobin level ≥8 g/dL
  • Height and weight Z-scores >-2
Key exclusion· 19
  • Current significant medical conditions including neurologic, cardiac, pulmonary, hepatic, endocrine, rheumatologic, autoimmune, renal, oncologic, or hematological disease
  • Known sickle cell disease
  • HIV infection
  • History of severe allergic reaction or anaphylaxis

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05400655
NCT05400655Phase 2Completed

Safety and Efficacy of L9LS, a Human Monoclonal Antibody Against Plasmodium Falciparum, in an Age De-Escalation, Dose-Escalation Trial and a Randomized, Placebo-Controlled, Double-Blind Trial of Children in Western Kenya

National Institute of Allergy and Infectious Diseases (NIAID)·interventional·Posted Jun 1, 2022·Updated Oct 16, 2025

In Brief

A Phase 2 clinical trial evaluating L9LS and Placebo for Plasmodium Falciparum Infection and Malaria. Completed, enrolled 912 participants across 1 site.

Detailed Summary

The purpose of this study is to evaluate the safety and tolerability of one-time subcutaneous (SC) administration of monoclonal antibody (MAb) L9LS in healthy Kenyan children aged 5 months to 10 years, as well as the protective efficacy of one or two doses of L9LS against naturally occurring Plasmodium falciparum (Pf) infection among Kenyan children aged 5 to 59 months at enrollment, in a setting of perennial high transmission.

Study Details

Timeline

Phase 2CompletedFinished
2023202420252026
First PostedJun 1, 2022
Enrollment StartSep 14, 2022
Primary CompletionJun 2, 2024
TodayJul 2, 2026
Enrollment to primary: 1.7 yearsPosted 4.1 years ago

Interventions

L9LSdrug

Administered subcutaneously.

Placeboother

Normal saline administered subcutaneously.