Themis Receives EMA PRIME Designation for Chikungunya Vaccine

Themis announced today that the European Medicines Agency (EMA) has granted PRIority MEdicines (PRIME) designation to its most advanced program in development, a vaccine to prevent chikungunya fever.

The PRIME scheme is designed to provide enhanced regulatory support for the development of medicines that target an unmet medical need. Chikungunya is a mosquito-transmitted disease that can have debilitating long-term effects and has no current treatment or prevention options. Themis’ vaccine candidate has shown excellent safety and immune-response data in clinical testing to date. Final results of a large dose-confirmation Phase 2 trial are expected in mid-2018. Additional Phase 2 trials are underway, totaling over 600 study volunteers in the US, EU and Central America.

The PRIME initiative was launched by EMA in 2016 to facilitate the development of medicines that target an important unmet medical need and may offer a major therapeutic advantage or benefit to patients without treatment options. These medicines are considered priority medicines within the European Union (EU). PRIME offers enhanced support to medicine developers to strengthen clinical trial designs, facilitate the generation of high-quality data and enable accelerated assessment of medicine applications.

About Themis

Themis Bioscience is developing urgently needed vaccines to prevent death and disability around the world. We lead in the development of a vaccine against chikungunya, a serious debilitating disease with global outbreak potential. Our innovation in vaccine technology has created a powerful platform and a growing pipeline addressing a broad range of infectious diseases. Together with industrial and academic leaders we work to prevent illness across the globe. For more information, visit

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