Article
作者: Langley, Joanne ; Wauters, Dominique ; Carter, Robert ; Dionne, Marc ; Finn, Daniel ; Staben, Jonathan ; Rok, Walter ; Langley, Joanne M ; Schear, Martin ; Tipton, Mary ; Cetin, Benhur ; Jeanfreau, Robert ; Nolan, Terry ; Ackerman, Ronald ; Ukkonen, Benita ; Toneatto, Daniela ; Pelayo, Enrique ; Spaziererova, Martina ; Surber, Joseph ; Morelle, Danielle ; Richmond, Peter C ; Osowa, Alexander ; Patel, Minesh ; de Looze, Ferdinandus ; Bloch, Mark ; Cetin, Benhur S ; Willemsen, Arnold ; Tapiero, Bruce ; Vale, Noah ; Farjo, Rand ; Rouhbakhsh, Rambod ; Bhusal, Chiranjiwi ; Zemanek, Josef ; Dzongowski, Peter ; Gupta, Anil ; Adamovska, Renata ; Silas, Peter ; Ulukol, Betul ; Gottfredson, Ryan ; Rämet, Mika ; Sadarangani, Manish ; Beran, Jiří ; Kiiroja, Kaia ; Laajalahti, Outi ; Lattanzi, Maria ; Paavola, Pauliina ; Pavlasek, Miroslav ; Bernard, David ; Simon, William ; Chakerian, Maia ; Raulier, Stefanie ; Freeman, George ; Athan, Eugene ; Vachon, Marie-Louise ; Jones, Jake ; Scott, John ; Dinleyici, Ener Cagri ; Grubb, Paul ; Dražan, Daniel ; Ince, Tolga ; Mehta, Hemalini ; Dalebout, Marije ; Seppä, Ilkka ; Byars, William ; Meisalu, Sandra ; Tiong, Florence ; Dinleyici, Ener C ; Sanchez, Yamirka ; Trapani, Mauro ; Kokko, Satu ; Ayesu, Kwabena ; Kellner, James ; Koski, Susanna ; Lechevin, Isabelle ; Richmond, Peter
AbstractBackgroundMeningococcal serogroup B (MenB) strains are highly diverse. Breadth of immune response for the MenB vaccine, 4CMenB, administered at 0–2, 0–6, or 0–2–6 months, was demonstrated by endogenous complement-human serum bactericidal antibody (enc-hSBA) assay against an epidemiologically relevant panel of 110 MenB strains.MethodsIn a phase 3 trial, 3651 healthy 10- to 25-year-old participants were randomized 5:5:9:1 to receive 4CMenB (0–6 schedule), 4CMenB (0–2–6 schedule), investigational MenABCWY vaccine, or control MenACWY-CRM vaccine. The primary objectives were to evaluate safety and demonstrate breadth of immune response by enc-hSBA assay against the MenB strain panel using test-based (percentage of samples without bactericidal activity against strains after 4CMenB vs control vaccination) and responder-based (percentage of participants whose postvaccination sera kill ≥70% strains) approaches. Success was demonstrated with 2-sided 97.5% confidence interval (CI) lower limit >65%. Immunogenicity was assessed by traditional hSBA assay against four indicator strains.ResultsBreadth of immune response (test-based) was 78.7% (97.5% CI, 77.2–80.1), 81.8% (80.4–83.1), 83.2% (81.9–84.4) for the 0–2, 0–6, and 0–2–6 schedules, respectively, and (responder-based) 84.8% (81.8–87.5), 89.8% (87.2–92.0), and 93.4% (91.2–95.2), respectively. No clinically relevant differences in immunogenicity were observed across schedules. 4CMenB was well tolerated.ConclusionsThe 2-dose (0–2, 0–6) 4CMenB schedules met predefined criteria for success for both breadth of immune response endpoints against a diverse MenB strain panel, had comparable immunogenicity, and safety in line with the established 4CMenB safety profile. The 3-dose schedule provided no additional immunological benefit, supporting use of the 4CMenB 0–2 schedule.