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Phase I and IIa trial to assess the safety, immunogenicity and protective efficacy against sporozoite challenge of the candidate malaria vaccine pfLSA-3 vaccine. - LSA3-trial

Phase I and IIa trial to assess the safety, immunogenicity and protective efficacy against sporozoite challenge of the candidate malaria vaccine pfLSA-3 vaccine. - LSA3-trial

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2006-001743-66-NL
Enrollment
Unknown
Registered
2006-10-20
Start date
2007-09-20
Completion date
Unknown
Last updated
2012-03-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

P. falciparum infection (malaria)

Interventions

Product Name: LSA3-rec Product Code: LSA3-rec Pharmaceutical Form: Powder for suspension for injection INN or Proposed INN: not available Current Sponsor code: LSA3-rec Other descriptive name: LSA3-re

Sponsors

INSTITUT PASTEUR, Biomedical Parasitology Unit
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Healthy male adults, aged 18 to 45 years - Available for a sporozoite challenge following the immunization course - Resident near the Radboud University Medical Center Nijmegen - Written informed consent Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: - Any history of malaria - Planned to travel to endemic malaria areas during the study period - Prior administration of an investigational malaria vaccine - Participation in any other clinical trial within 90 days prior to the onset of the trial - Body Mass Index 32 kg/m2 - Blood pressure > 150/90 in two measurements - Symptoms, physical signs and laboratory values suggestive of systemic disorders, including renal, hepatic, cardiovascular, pulmonary, skin, immunodeficiency, psychiatric and other conditions, which could interfere with the interpretation of the study results or compromise the health of the volunteers - Seropositive for HIV, HBV or HCV - An estimated, ten year risk of fatal cardiovascular disease of =5%, as estimated by the Systematic Coronary Risk Evaluation (SCORE) system. - Any clinically significant deviation from the normal range in biochemistry or haematology blood tests or in urine analysis - The use of chronic medication, especially immunosuppressive agents or antibiotics - Known hypersensitivity to any of the vaccine components

Design outcomes

Primary

MeasureTime frame
Main Objective: Main objective : To assess the safety and immunogenicity (phase I) of two formulations of the candidate vaccine LSA-3 in humans and to assess its protective efficacy in a sporozoite challenge (phase IIa). ;Secondary Objective: ;Primary end point(s): Safety and immunogenicity data Evaluation of protective efficacy

Countries

Netherlands

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026