PMID- 37884415 OWN - NLM STAT- MEDLINE DCOM- 20231103 LR - 20231103 IS - 1873-2518 (Electronic) IS - 0264-410X (Linking) VI - 41 IP - 47 DP - 2023 Nov 13 TI - Consistency of immunogenicity in three consecutive lots of a tetravalent dengue vaccine candidate (TAK-003): A randomized placebo-controlled trial in US adults. PG - 6999-7006 LID - S0264-410X(23)01132-5 [pii] LID - 10.1016/j.vaccine.2023.09.049 [doi] AB - BACKGROUND: We conducted a trial to demonstrate immunogenic equivalence of three consecutive manufacturing lots of Takeda's tetravalent dengue vaccine candidate, TAK-003, and further assessed its safety and reactogenicity. METHODS: Healthy US adults (n = 923) randomized 2:2:2:1 to four groups received two doses of one of three TAK-003 lots or placebo on Days 0 and 90, with follow-up to Day 270. Primary endpoint evaluated lot-to-lot equivalence of geometric mean neutralizing titers at Day 120 against each of 4 dengue serotypes in baseline seronegative participants. Solicited local and systemic, and unsolicited adverse events (AEs) were assessed for 7, 14 and 28 days after each dose, respectively. Serious AEs (SAE) were monitored throughout the study. RESULTS: Eight of 12 prespecified equivalence comparisons were met in the per-protocol set but failed marginally in the other 4 mainly due to loss of statistical power following higher than anticipated baseline seropositivity and drop-out rates. All three TAK-003 lots elicited high rates of tetravalent dengue seropositivity (96.7 %, 93.0 % and 97.5 % at Day 120; 91.0 %, 80.5 % and 85.7 % at Day 270) and had similar reactogenicity profiles with no vaccine-related SAEs. CONCLUSIONS: The three lots of TAK-003 were immunogenic for all four dengue serotypes and well tolerated in healthy adults. Despite not meeting all equivalence comparisons, no major differences were observed between lots and the data support acceptable consistency of the manufacturing process. Trial registrationClinicalTrials.gov identifier: NCT03423173. CI - Copyright (c) 2023 Takeda Vaccines. Published by Elsevier Ltd.. All rights reserved. FAU - Tricou, Vianney AU - Tricou V AD - Takeda Pharmaceuticals International, Zurich, Switzerland. Electronic address: vianney.tricou@takeda.com. FAU - Winkle, Peter J AU - Winkle PJ AD - Anaheim Clinical Trials, Anaheim, CA, USA. FAU - Tharenos, Leslie M AU - Tharenos LM AD - Synexus - St. Louis, St. Louis, MO, USA. FAU - Rauscher, Martina AU - Rauscher M AD - Takeda Pharmaceuticals International, Zurich, Switzerland. FAU - Escudero, Ian AU - Escudero I AD - Takeda Vaccines, Singapore. FAU - Hoffman, Elaine AU - Hoffman E AD - Takeda Vaccines, Cambridge, MA, USA. FAU - LeFevre, Inge AU - LeFevre I AD - Takeda Pharmaceuticals International, Zurich, Switzerland. FAU - Borkowski, Astrid AU - Borkowski A AD - Takeda Pharmaceuticals International, Zurich, Switzerland. FAU - Wallace, Derek AU - Wallace D AD - Takeda Vaccines, Cambridge, MA, USA. LA - eng SI - ClinicalTrials.gov/NCT03423173 PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20231024 PL - Netherlands TA - Vaccine JT - Vaccine JID - 8406899 RN - 0 (Dengue Vaccines) RN - 0 (Vaccines, Combined) RN - 0 (Antibodies, Viral) RN - 0 (Antibodies, Neutralizing) SB - IM MH - Humans MH - Adult MH - *Dengue/prevention & control MH - *Dengue Vaccines MH - Vaccines, Combined MH - Vaccination/methods MH - Double-Blind Method MH - Immunogenicity, Vaccine MH - Antibodies, Viral MH - Antibodies, Neutralizing OTO - NOTNLM OT - Dengue virus OT - Immunogenicity OT - Reactogenicity OT - Safety OT - Tetravalent OT - Vaccine COIS- Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: VT, MR, IE, EH, IL, AB and DW were employees of the study sponsor at the time of the study. PJW and LMT received fees through their institutions for performing the study. EDAT- 2023/10/27 00:43 MHDA- 2023/11/03 06:43 CRDT- 2023/10/26 21:54 PHST- 2021/12/01 00:00 [received] PHST- 2023/09/19 00:00 [revised] PHST- 2023/09/22 00:00 [accepted] PHST- 2023/11/03 06:43 [medline] PHST- 2023/10/27 00:43 [pubmed] PHST- 2023/10/26 21:54 [entrez] AID - S0264-410X(23)01132-5 [pii] AID - 10.1016/j.vaccine.2023.09.049 [doi] PST - ppublish SO - Vaccine. 2023 Nov 13;41(47):6999-7006. doi: 10.1016/j.vaccine.2023.09.049. Epub 2023 Oct 24.