PMID- 26384447 OWN - NLM STAT- MEDLINE DCOM- 20160818 LR - 20151113 IS - 1873-2518 (Electronic) IS - 0264-410X (Linking) VI - 33 IP - 46 DP - 2015 Nov 17 TI - Safety and immunogenicity of different doses and schedules of a live attenuated tetravalent dengue vaccine (TDV) in healthy adults: A Phase 1b randomized study. PG - 6351-9 LID - S0264-410X(15)01251-7 [pii] LID - 10.1016/j.vaccine.2015.09.008 [doi] AB - INTRODUCTION: A safe, effective dengue vaccine that can simultaneously induce immunity to all four dengue virus serotypes (DENV-1-4) is a public health priority. A chimeric tetravalent dengue vaccine (TDV) based on an attenuated DENV-2 serotype backbone was evaluated in healthy, flavivirus-seronegative adults. METHODS: In this randomized, multicenter, Phase 1b study conducted in the United States, the safety and immunogenicity of TDV were evaluated in 140 participants aged 18-45 years in six dosing regimen study groups. Participants were injected subcutaneously on Days 0 and 90; placebo (saline) was injected where appropriate to maintain double blinding. Three different TDV dosages (TDV, a vaccine in which TDV-4 had been increased three-fold, and a one-tenth TDV dose), and single or double dosing were evaluated in one and/or both arms. Primary endpoints were solicited and unsolicited adverse events (AEs) and seroconversion rates to DENV-1-4 at Day 120. RESULTS: The severity of all AEs was generally mild. The most common unsolicited AEs were headache (52%), fatigue (43%) and myalgia (29%). The incidence of injection site pain ranged from 29 to 64% and 5 to 52% among study groups after the first and second doses, respectively. At Day 120, the ranges of seroconversion rates among the groups were DEN-1: 84-100%; DEN-2: 96-100%; DEN-3: 83-100%; and DEN-4: 33-77%. More than 80% of participants in each group seroconverted to at least three dengue serotypes. Substantial GMT increases from baseline were observed for DEN-1-3 at all time points from Day 30 onward; DEN-4 GMT increases were lower. Increasing TDV-4 slightly increased DEN-4 GMT, did not impact DEN-2 and DEN-3 GMT, but reduced DEN-1 GMT. Neither multiple dosing in both arms, nor one-tenth TDV dosing meaningfully impacted GMT increases relative to TDV. CONCLUSIONS: All TDV doses and dosing schedules were well tolerated and immunogenic in healthy flavivirus-naive adults (ClinicalTrials.gov NCT01511250). CI - Copyright (c) 2015 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Rupp, Richard AU - Rupp R AD - Sealy Center for Vaccine Development, University of Texas Medical Branch at Galveston, Galveston, TX, United States. FAU - Luckasen, Gary Joseph AU - Luckasen GJ AD - Medical Center of the Rockies Foundation, University of Colorado Health North Research, Loveland, CO, United States. FAU - Kirstein, Judith Lee AU - Kirstein JL AD - Utah Research Team, Advanced Clinical Research, West Jordan, UT, United States. FAU - Osorio, Jorge E AU - Osorio JE AD - Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States; Scientific Affairs and Policy, Takeda Vaccines, Inc., Deerfield, IL, United States. FAU - Santangelo, Joseph D AU - Santangelo JD AD - Operations, Takeda Vaccines Pte. Ltd, Singapore, Singapore. FAU - Raanan, Marsha AU - Raanan M AD - Statistics, Quantitative Sciences, Takeda Development Center Americas Inc., Deerfield, IL, United States. FAU - Smith, Mary Kathryn AU - Smith MK AD - Clinical Testing Laboratory, Takeda Vaccines, Inc., Deerfield, IL, United States. FAU - Wallace, Derek AU - Wallace D AD - Clinical Development, Takeda Vaccines Pte. Ltd, Singapore, Singapore. FAU - Gordon, Gilad S AU - Gordon GS AD - Orra Group, LLC, Boulder, CO, United States. FAU - Stinchcomb, Dan T AU - Stinchcomb DT AD - Scientific Affairs and Policy, Takeda Vaccines, Inc., Deerfield, IL, United States. Electronic address: dan.stinchcomb@takeda.com. LA - eng SI - ClinicalTrials.gov/NCT01511250 PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial DEP - 20150915 PL - Netherlands TA - Vaccine JT - Vaccine JID - 8406899 RN - 0 (Dengue Vaccines) RN - 0 (Placebos) RN - 0 (Vaccines, Attenuated) SB - IM MH - Adolescent MH - Adult MH - Dengue/*prevention & control MH - Dengue Vaccines/administration & dosage/*adverse effects/*immunology MH - Double-Blind Method MH - Drug-Related Side Effects and Adverse Reactions/epidemiology/pathology MH - Female MH - Healthy Volunteers MH - Humans MH - *Immunization Schedule MH - Incidence MH - Injections, Subcutaneous MH - Male MH - Middle Aged MH - Placebos/administration & dosage MH - United States MH - Vaccines, Attenuated/administration & dosage/adverse effects/immunology MH - Young Adult OTO - NOTNLM OT - Clinical trial OT - Dose titration OT - Immunogenicity OT - Live attenuated tetravalent dengue vaccine OT - Multiple administration OT - Recombinant chimeric dengue vaccine OT - Safety EDAT- 2015/09/20 06:00 MHDA- 2016/08/19 06:00 CRDT- 2015/09/20 06:00 PHST- 2015/06/23 00:00 [received] PHST- 2015/09/01 00:00 [revised] PHST- 2015/09/02 00:00 [accepted] PHST- 2015/09/20 06:00 [entrez] PHST- 2015/09/20 06:00 [pubmed] PHST- 2016/08/19 06:00 [medline] AID - S0264-410X(15)01251-7 [pii] AID - 10.1016/j.vaccine.2015.09.008 [doi] PST - ppublish SO - Vaccine. 2015 Nov 17;33(46):6351-9. doi: 10.1016/j.vaccine.2015.09.008. Epub 2015 Sep 15.