SillaJen, Inc. engages in developing technologies and products using genetic engineering in South Korea. The company develops Pexa-Vec, which is in phase 2 clinical trial to treat renal Cell Carcinoma and prostate cancer, as well as in phase 1 clinical trial to treat melanoma and solid tumors. It also develops BAL0891, which is in phase 1 clinical trial for the treatment of solid tumors; and SJ-600 Series and JX-970 to treat solid tumors and is in preclinical trial. SillaJen, Inc. was founded in 2006 and is headquartered in Seoul, South Korea.