NovoCure Limited develops and commercializes treatment for solid tumor cancers therapy called the tumor treating fields (TTFields). The company markets its proprietary therapy, TTFields delivery system under the Optune name for use as a monotherapy treatment for adult patients with glioblastoma brain cancer. NovoCure Limited also conducts clinical trials for the use of TTFields in brain metastases, advanced non-small cell lung cancer, pancreatic cancer, ovarian cancer, and mesothelioma. The company markets its products in the United States, as well as in European Union member states, Switzerland, and Japan. NovoCure Limited was founded in 2000 and is based in Saint Helier, Channel Islands.