Takeda’s Dengue Vaccine Candidate Meets Primary Endpoint in Pivotal Phase 3 Efficacy Trial
Takeda Pharmaceutical Company Limited [TSE:4502 / NYSE:TAK ] (“Takeda”) today announced that the pivotal Phase 3 trial of its dengue vaccine candidate met the primary efficacy endpoint. This first analysis of the Tetravalent Immunization against Dengue Efficacy Study (TIDES) trial showed that the company’s investigational live-attenuated tetravalent dengue vaccine (TAK-003) was efficacious in preventing dengue fever caused by any of the four serotypes of the virus. While review of the extensive data set is ongoing, TAK-003 was well tolerated with no significant safety concerns to date. The TIDES trial is continuing and additional results are expected later this year, along with results from other Phase 3 studies.1
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“We are very encouraged by the performance of our dengue vaccine candidate in the study. This brings us one step closer to helping the world tackle the massive burden of dengue,” said Rajeev Venkayya, M.D., President of the Global Vaccine Business Unit at Takeda. “We are excited to publish the data in a peer-reviewed journal as quickly as possible. In parallel, we are advancing the clinical development, commercial manufacturing, and stakeholder consultations to support a potential future global launch of the vaccine.”
The TIDES trial, Takeda’s largest interventional clinical trial to date, enrolled over 20,000 healthy children and adolescents ages four to 16 years living in dengue-endemic areas. The study was designed to evaluate the efficacy, safety and immunogenicity of two doses of TAK-003, in both dengue exposed and naïve individuals.1
TAK-003 is not currently licensed anywhere in the world. In addition to dengue, Takeda is developing vaccines to address other high-priority infectious diseases, including Zika, norovirus and polio.
About the Phase 3 TIDES (DEN-301) Trial
The double-blind, randomized and placebo-controlled Phase 3 TIDES trial is evaluating the safety and efficacy of two doses of TAK-003 in the prevention of laboratory-confirmed symptomatic dengue fever of any severity and due to any of the four dengue virus serotypes in children and adolescents.1 Study participants were randomly assigned to receive either TAK-003, 0.5 mL or placebo, by subcutaneous injection on Day 1 and Day 90.1 The study is comprised of three parts. The current analysis, Part 1, evaluated vaccine efficacy (VE) and safety through 15 months after the first dose. Part 2 continues for an additional six months to complete the assessment of the secondary endpoints of VE by serotype, baseline serostatus and severity. Part 3 evaluates VE and long-term safety by following participants for an additional three years.1 The Part 1 and Part 2 data will form the basis for filing for licensure.
The trial is taking place at sites in dengue-endemic areas in Latin America (Brazil, Colombia, Panama, Dominican Republic and Nicaragua) and Asia (Philippines, Thailand and Sri Lanka) where there are unmet needs in dengue prevention and where severe dengue is a leading cause of serious illness and death among children.1 Baseline blood samples were collected from all individuals participating in the trial to allow for evaluation of safety and efficacy based on serostatus. Takeda and an independent Data Monitoring Committee of experts are actively monitoring safety on an ongoing basis.
Takeda's tetravalent dengue vaccine candidate (TAK-003) is based on a live-attenuated dengue serotype 2 virus, which provides the genetic “backbone” for all four vaccine viruses. 2 Phase 1 and 2 data in children and adolescents showed that TAK-003 induced immune responses against all four dengue serotypes, in both seropositive and seronegative participants, and the vaccine was found to be generally safe and well tolerated.3,4,5,6
Dengue is the fastest spreading mosquito-borne viral disease and is one of the World Health Organization’s top ten threats to global health in 2019.7,8 Dengue is spread by Aedes aegypti and Aedes albopictus mosquitoes and is caused by any of four dengue virus serotypes, each of which can cause dengue fever or severe dengue.9,10 The prevalence of individual serotypes varies across different geographies, countries, regions, seasons and over time.11, 12 Recovery from infection by one serotype provides lifelong immunity against only that serotype, and later exposure to any of the remaining serotypes is associated with an increased risk of severe disease.9
Dengue outbreaks are observed in tropical and sub-tropical areas and have recently caused outbreaks in parts of the continental U.S. and Europe.9,13,14 Approximately half of the world now lives under the threat of dengue, which is estimated to cause 400 million infections and 20,000 deaths globally each year.9,15 The dengue virus can infect people of all ages and is a leading cause of serious illness among children in some countries in Latin America and Asia.9
Takeda’s Commitment to Vaccines
Vaccines prevent more than two million deaths each year and have transformed global public health.16 For the past 70 years, Takeda has supplied vaccines to protect the health of people in Japan. Today, Takeda’s global vaccine business is applying innovation to tackle some of the world’s most challenging infectious diseases, such as dengue, Zika, norovirus and polio. Our team brings an outstanding track record and a wealth of knowledge in vaccine development, manufacturing and global access to advance a pipeline of vaccines to address some of the world’s most pressing public health needs. For more information, visit www.TakedaVaccines.com .
About Takeda Pharmaceutical Company Limited
Takeda Pharmaceutical Company Limited (TSE:4502 ) (NYSE:TAK) is a global, values-based, R&D-driven biopharmaceutical leader headquartered in Japan, committed to bringing Better Health and a Brighter Future to patients by translating science into highly-innovative medicines. Takeda focuses its R&D efforts on four therapeutic areas: Oncology, Gastroenterology (GI), Neuroscience and Rare Diseases. We also make targeted R&D investments in Plasma-Derived Therapies and Vaccines. We are focusing on developing highly innovative medicines that contribute to making a difference in people's lives by advancing the frontier of new treatment options and leveraging our enhanced collaborative R&D engine and capabilities to create a robust, modality-diverse pipeline. Our employees are committed to improving quality of life for patients and to working with our partners in health care in approximately 80 countries and regions.
For more information, visit https://www.takeda.com .
1. ClinicalTrials.gov. Efficacy, Safety and Immunogenicity of Takeda's Tetravalent Dengue Vaccine (TDV) in Healthy Children (TIDES) . 2017. Retrieved August 2018.
2. Huang, C. Y.-H., et al. Genetic and Phenotypic Characterization of Manufacturing Seeds for Tetravalent Dengue Vaccine (DENVax). PLoS Neglected Tropical Diseases . 2013. Retrieved August 2018.
3. Sáez-Llorens, X., Tricou, V., et al. Safety and immunogenicity of one versus two doses of Takeda's tetravalent dengue vaccine: Interim results of a long-term phase 2, randomized, placebo-controlled pediatric trial in Asia and Latin America . The Lancet Infectious Diseases . 2017. Retrieved August 2018.
4. Osorio, J.E., et al. Safety and immunogenicity of a recombinant live attenuated tetravalent dengue vaccine (DENVax) in flavivirus-naive healthy adults in Colombia: a randomised, placebo-controlled, phase 1 study . The Lancet Infectious Diseases . 2014. Retrieved August 2018.
5. Wallace, D. Persistence of neutralizing antibodies one year after two doses of a candidate recombinant tetravalent dengue vaccine in subjects aged from 1.5 to 45 years. Presented at 6th Annual Meeting, American Society of Tropical Medicine and Hygiene. 2015.
6. Saez-Llorens, X., et al. Phase II, double-blind, controlled trial to assess the safety and immunogenicity of different schedules of Takeda’s Tetravalent Dengue Vaccine Candidate (TDV) in healthy subjects aged between 2 and <18 years and living in dengue endemic countries asia latin america. presented at 5th pan-american research network meeting. 2016. p>
7. World Health Organization. Vector-borne diseases fact sheet . 2014. Retrieved August 2018.
8. World Health Organization. Ten threats to global health in 2019 . 2019. Retrieved January 2019.
9. World Health Organization. Dengue and Severe Dengue . 2016. Retrieved August 2018.
10. Centers for Disease Control and Prevention. Clinical Guidance Dengue Virus . 2014. Retrieved August 2018.
11. Bravo, L., et al. Epidemiology of Dengue Disease in the Philippines (2000-2011): A Systematic Literature Review . PLoS Neglected Tropical Diseases . 2014. Retrieved August 2018.
12. Guzman, M.G., et al. Dengue: a continuing global threat . Nature Reviews Microbiology . 2010. Retrieved August 2018.
13. Knowlton, K., et al. Mosquito-Borne Dengue Fever Threat Spreading in the Americas . The Natural Resources Defense Council (NRDC). 2009. Retrieved August 2018.
14. Chan E., et al. Using Web Search Query Data to Monitor Dengue Epidemics: A New Model for Neglected Tropical Disease Surveillance . PLoS Neglected Tropical Diseases . 2011. Retrieved August 2018.
15. Murray N.E., et. al. Epidemiology of dengue: past, present and future prospects . Clinical Epidemiology . 2013. Retrieved August 2018.
16. UNICEF. Immunization Facts and Figures . 2013. Retrieved August 2018.
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