Lack of allele-specific efficacy of a bivalent AMA1 malaria vaccine
نویسندگان
چکیده
منابع مشابه
Molecular basis of allele-specific efficacy of a blood-stage malaria vaccine: vaccine development implications.
The disappointing efficacy of blood-stage malaria vaccines may be explained in part by allele-specific immune responses that are directed against polymorphic epitopes on blood-stage antigens. FMP2.1/AS02(A), a blood-stage candidate vaccine based on apical membrane antigen 1 (AMA1) from the 3D7 strain of Plasmodium falciparum, had allele-specific efficacy against clinical malaria in a phase II t...
متن کاملEvaluating the efficacy of a malaria vaccine.
Malaria is a major public health problem. An effective vaccine against malaria is actively being sought. We formulate a potential outcomes definition of the efficacy of a malaria vaccine for preventing fever. A challenge in estimating this efficacy is that there is no sure way to determine whether a fever was caused by malaria. We study the properties of two approaches for estimating efficacy: ...
متن کاملPhase 1 Study of a Combination AMA1 Blood Stage Malaria Vaccine in Malian Children
BACKGROUND Apical Membrane Antigen-1 (AMA1) is one of the leading blood stage malaria vaccine candidates. AMA1-C1/Alhydrogel consists of an equal mixture of recombinant AMA1 from FVO and 3D7 clones of P. falciparum, adsorbed onto Alhydrogel. A Phase 1 study in semi-immune adults in Mali showed that the vaccine was safe and immunogenic, with higher antibody responses in those who received the 80...
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BACKGROUND The FMP2.1/AS02A candidate malaria vaccine was tested in a Phase 2 study in Mali. Based on results from the first eight months of follow-up, the vaccine appeared well-tolerated and immunogenic. It had no significant efficacy based on the primary endpoint, clinical malaria, but marginal efficacy against clinical malaria in secondary analyses, and high allele-specific efficacy. Extende...
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ژورنال
عنوان ژورنال: Malaria Journal
سال: 2010
ISSN: 1475-2875
DOI: 10.1186/1475-2875-9-175