Share this article Share this article BALTIMORE, May 25, 2021 /PRNewswire/ -- Elixirgen Therapeutics, Inc., a Baltimore-based biotechnology company focused on the discovery and development of therapies for genetic diseases and vaccines, today announced the dosing of the first and second participants in its COVID-19 vaccine Phase 1/2 Clinical Trial in Japan. The vaccine, called EXG-5003, is an intradermally-injected, temperature-controllable, self-replicating RNA vaccine expressing the receptor binding domain of the SARS-CoV-2 spike protein. Elixirgen Therapeutics Announces First Dosing of COVID19 Vaccine EXG-5003 in Phase 1/2 Trial at Fujita Health University Akihiro Ko, CEO of Elixirgen Therapeutics, said "We are pleased to begin our Phase 1/2 study for EXG-5003, which has been in development since March of 2020. There is an ongoing global need for COVID-19 vaccines, and we believe in the importance of contributing to the public health effort."