PMID- 17207146 OWN - NLM STAT- MEDLINE DCOM- 20070315 LR - 20220427 IS - 1360-2276 (Print) IS - 1360-2276 (Linking) VI - 12 IP - 1 DP - 2007 Jan TI - Safety and immunogenicity of the RTS,S/AS02A candidate malaria vaccine in children aged 1-4 in Mozambique. PG - 37-46 AB - BACKGROUND: The development of a malaria vaccine remains a public health priority for sub-Saharan Africa. RTS,S/AS02A candidate malaria vaccine has been shown to be safe and immunogenic in previous studies in adults and staggered dose-escalation studies in children in The Gambia. However, genetic features and the intensity of malaria transmission may modify the safety and immune response of a vaccine. OBJECTIVE: We carried out a phase I, double-blind randomized controlled trial in 60 children aged 1-4 in Mozambique to evaluate the safety, reactogenicity and immunogenicity of the paediatric vaccine dose (fixed 25 microg RTS,S in 0.25 ml) of RTS,S/AS02A, prior to undertaking a planned larger phase IIb proof-of-concept of efficacy study in the same population. METHOD: Children were randomized to receive either RTS,S/AS02A or Engerix-B vaccine. Monitoring of safety and reactogenicity included detailed clinical and laboratory analyses and assessment of adverse events (AEs). RESULTS: The RTS,S/AS02A was found to be safe and well tolerated. Serious adverse events were balanced between both groups and none was related to vaccination. The frequency of adverse events reported with RTS, S/AS02A was comparable to previous studies in children. Grade 3 AEs were infrequent (one case of pain, one of fever in each group and some swelling greater than 20 mm in diameter), transient and resolved without sequelae. RTS,S/AS02A was highly immunogenic for anti-circumsporozoite protein antibody response and induced a strong anti-hepatitis-B surface antigen response. FAU - Macete, E AU - Macete E AD - Centro de Investigacao em Saude da Manhica (CISM), Manhica, Mozambique. FAU - Aponte, J J AU - Aponte JJ FAU - Guinovart, C AU - Guinovart C FAU - Sacarlal, J AU - Sacarlal J FAU - Ofori-Anyinam, O AU - Ofori-Anyinam O FAU - Mandomando, I AU - Mandomando I FAU - Espasa, M AU - Espasa M FAU - Bevilacqua, C AU - Bevilacqua C FAU - Leach, A AU - Leach A FAU - Dubois, M C AU - Dubois MC FAU - Heppner, D G AU - Heppner DG FAU - Tello, L AU - Tello L FAU - Milman, J AU - Milman J FAU - Cohen, J AU - Cohen J FAU - Dubovsky, F AU - Dubovsky F FAU - Tornieporth, N AU - Tornieporth N FAU - Thompson, R AU - Thompson R FAU - Alonso, P L AU - Alonso PL LA - eng PT - Clinical Trial, Phase I PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - England TA - Trop Med Int Health JT - Tropical medicine & international health : TM & IH JID - 9610576 RN - 0 (Antibodies, Protozoan) RN - 0 (Engerix-B) RN - 0 (Hepatitis B Surface Antigens) RN - 0 (Hepatitis B Vaccines) RN - 0 (Malaria Vaccines) RN - 0 (Protozoan Proteins) RN - 0 (RTS,S-AS02A vaccine) RN - 0 (circumsporozoite protein, Protozoan) RN - AYI8EX34EU (Creatinine) RN - EC 2.6.1.2 (Alanine Transaminase) SB - IM MH - Alanine Transaminase/blood MH - Antibodies, Protozoan/immunology MH - Child, Preschool MH - Creatinine/blood MH - Double-Blind Method MH - Drug Administration Schedule MH - Hepatitis/immunology MH - Hepatitis B Surface Antigens/immunology MH - Hepatitis B Vaccines/adverse effects/immunology MH - Humans MH - Infant MH - Injections/adverse effects MH - Malaria Vaccines/administration & dosage/adverse effects/*immunology MH - Malaria, Falciparum/epidemiology/immunology/prevention & control MH - Mozambique/epidemiology MH - Pain/chemically induced MH - Protozoan Proteins/immunology EDAT- 2007/01/09 09:00 MHDA- 2007/03/16 09:00 CRDT- 2007/01/09 09:00 PHST- 2007/01/09 09:00 [pubmed] PHST- 2007/03/16 09:00 [medline] PHST- 2007/01/09 09:00 [entrez] AID - TMI1754 [pii] AID - 10.1111/j.1365-3156.2006.01754.x [doi] PST - ppublish SO - Trop Med Int Health. 2007 Jan;12(1):37-46. doi: 10.1111/j.1365-3156.2006.01754.x.