SillaJen, Inc. develops and commercializes oncolytic immunotherapy products in South Korea. Its lead product is Pexa-Vec for the treatment of advanced liver cancer. The company also develops BAL0891, a dual TTK/PLK inhibitor; SJ-600 to improve the intravenous administration efficiency of anticancer viruses; JX-970 for the treatment of tumor tissues; and JX-900 is a series of modified vaccinia vaccine. SillaJen, Inc. was founded in 2006 and is headquartered in Seoul, South Korea.