0 IU/ml was used as a serologic marker of long-term protection against diphtheria and tetanus toxoids, 4-fold increases Veliparib in vitro in titres from pre- to post-vaccination

were used to define an immune response for pertussis antigens. Geometric mean titres (GMTs) of antibodies to HPV virus-like particles (VLPs) for Types 6, 11, 16, and 18 were measured by competitive Luminex immunoassay (cLIA) for each of the viral antigen types [14] and [15]. The immunogenicity of MenACWY-CRM given concomitantly with Tdap and HPV, or sequentially after Tdap, was considered non-inferior to MenACWY-CRM administered alone if the lower limit (LL) of the two-sided 95% confidence interval (CI) for the difference in the percentage of subjects with a seroresponse or hSBA titre ≥1:8 was > −10% for each serogroup. Using GMTs as the endpoint, MenACWY-CRM administered concomitantly or sequentially was considered non-inferior if LL 95% CI > 0.5. Seroresponse was a composite endpoint defined by increases in the hSBA titre from pre- to post-vaccination. If the pre-vaccination titre was below the limit of detection (<1:4), seroresponse was defined by seroconversion to a post-vaccination

titre of ≥1:8. If the pre-vaccination titre was ≥1:4, seroresponse was defined by a 4-fold, or greater, increase in titre from pre- to post-vaccination. The immunogenicity of Tdap when administered concomitantly with MenACWY-CRM and HPV or sequentially after MenACWY-CRM was considered non-inferior to Tdap administered alone if the ABT-263 datasheet LL of the two-sided 95% CI for

the difference in the percentage of subjects with anti-tetanus or anti-diphtheria toxins ≥1.0 IU/ml was > −10% for each antigen. For pertussis antigens, anti-pertussis toxoid (PT), anti-filamentous haemagglutinin (FHA), and anti-pertactin Isotretinoin (PRN) GMCs, when Tdap was administered concomitantly with MenACWY-CRM and HPV or sequentially after MenACWY-CRM, were considered non-inferior to Tdap alone if the LL of the two-sided 95% CI for the ratio of GMCs at 1 month post-vaccination was >0.67. The immune response to HPV when administered concomitantly with MenACWY-CRM and Tdap was considered non-inferior to HPV administered alone if the LL of the two-sided 95% CI for the difference in the percentage of subjects with a seroconversion was > −10%. For the purpose of the HPV immunogenicity analysis, the MenACWY-CRM → Tdap → HPV and Tdap → MenACWY-CRM → HPV groups were combined for this report, but immunogenicity was similar when the two groups were analysed separately. Statistical analyses were performed using SAS software, version 9.1 or higher (SAS Institute, Cary, NC, USA). Subject demographics and pre-vaccination immunogenicity data were well matched between all groups (Table 1). Of the 1620 subjects enrolled, 1404 (86.7%) completed the study according to protocol (Fig. 1).