| Second generation Tumor Treating Fields delivery system is  more than 50 percent lighter and 50 percent smaller than first generation  Optune ST. HELIER, Jersey - Novocure (NASDAQ: NVCR) filed a premarket approval (PMA)  supplement application for its new, second generation Optune system with the  U.S. Food and Drug Administration on Dec. 22, 2015. FDA approval of the PMA  supplement is required before Novocure can make the improved Optune system  available to glioblastoma patients in the U.S. Optune is a portable, noninvasive device that delivers Tumor Treating Fields  (TTFields) therapy to patients with newly diagnosed and recurrent glioblastoma.  Novocure designed the second generation Optune system to improve the convenience  and manageability of TTFields therapy for patients. The new model features a  TTFields generator that is half the size and half the weight of the current  system. The second generation Optune system, including its battery, weighs 2.7  pounds (1.3 kilograms) compared to the current version that weighs 6 pounds (3  kilograms). The improvements of the second generation Optune system were  achieved using novel digital signal generation technology. "We’re making significant advancements in the technology used to deliver  TTFields therapy," said Mike Ambrogi, Novocure’s Chief Operating Officer. "The  big improvement with the second generation device is the reduction in size and  weight achieved by digital signal generation technology. From a  patient-convenience view, we believe it is a significant step forward." Novocure started offering the second generation Optune device to patients in  Germany in October 2015 and has since made it available to all new patients  throughout Europe. Novocure is in the process of upgrading European patients who  previously started TTFields therapy on the first generation Optune. "Many of our European patients are pleased with the new ergonomic,  lightweight Optune system, which they incorporate into their daily routines with  more ease," said Asaf Danziger, Novocure’s Chief Executive Officer. "We will  continue to improve all aspects of our Tumor Treating Fields delivery systems to  enhance the quality of life of our patients." About Tumor Treating Fields Therapy Tumor Treating Fields (TTFields) therapy is delivered by a portable,  non-invasive medical device designed for continuous use by patients. In  vitro and in vivo studies have shown that TTFields therapy slows  and reverses tumor growth by inhibiting mitosis, the process by which cells  divide and replicate. TTFields therapy creates low intensity, alternating  electric fields within a tumor that exert physical forces on electrically  charged cellular components, preventing the normal mitotic process and causing  cancer cell death. Approved Indications In the United States, Optune is intended as a treatment for adult patients  (22 years of age or older) with histologically-confirmed glioblastoma multiforme  (GBM). In the United States, Optune with temozolomide is indicated for the treatment  of adult patients with newly diagnosed, supratentorial glioblastoma following  maximal debulking surgery and completion of radiation therapy together with  concomitant standard of care chemotherapy. In the United States, for the treatment of recurrent GBM, Optune is indicated  following histologically-or radiologically-confirmed recurrence in the  supratentorial region of the brain after receiving chemotherapy. The device is  intended to be used as a monotherapy, and is intended as an alternative to  standard medical therapy for GBM after surgical and radiation options have been  exhausted. In the European Union, Optune is intended for the treatment of patients with  newly diagnosed GBM, after surgery and radiotherapy with adjuvant temozolomide,  concomitant to maintenance temozolomide. The treatment is intended for adult  patients, 18 years of age or older, and should be started more than four weeks  after surgery and radiation therapy with adjuvant temozolomide. Treatment may be  given together with maintenance temozolomide and after maintenance temozolomide  is stopped. In the European Union, Optune is also intended for the treatment of patients  with recurrent GBM who have progressed after surgery, radiotherapy and  temozolomide treatment for their primary disease. The treatment is intended for  adult patients, 18 years of age or older, and should be started more than 4  weeks after the latest surgery, radiation therapy or chemotherapy. Patients should only use Optune under the supervision of a physician properly  trained in use of the device. Full prescribing information is available at www.optune.com/safety or by calling toll  free 1-855-281-9301 in the US or by email at supportEMEA@novocure.com in the European Union. About Novocure Novocure is a Jersey Isle oncology company pioneering a novel therapy for  solid tumors called TTFields. Novocure’s US operations are based in Portsmouth,  NH and New York, NY. Additionally, the company has offices in Germany,  Switzerland, and Japan and a research center in Haifa, Israel. For additional  information about the company, please visit www.novocure.com or follow us at www.twitter.com/novocure. Forward-Looking Statements In addition to historical facts or statements of current condition, this  press release may contain forward-looking statements. Forward-looking statements  provide Novocure’s current expectations or forecasts of future events. These may  include statements regarding anticipated scientific progress on its research  programs, development of potential products, interpretation of clinical results,  prospects for regulatory approval, manufacturing development and capabilities,  market prospects for its products, and other statements regarding matters that  are not historical facts. You may identify some of these forward-looking  statements by the use of words in the statements such as "anticipate,"  "estimate," "expect," "project," "intend," "plan," "believe" or other words and  terms of similar meaning. Novocure's performance and financial results could  differ materially from those reflected in these forward-looking statements due  to general financial, economic, regulatory and political conditions as well as  more specific risks and uncertainties facing Novocure such as those set forth in  its Quarterly Report on Form 10-Q filed on October 27, 2015 with the U.S.  Securities and Exchange Commission. Given these risks and uncertainties, any or  all of these forward-looking statements may prove to be incorrect. Therefore,  you should not rely on any such factors or forward-looking statements.  Furthermore, Novocure does not intend to update publicly any forward-looking  statement, except as required by law. Any forward-looking statements herein  speak only as of the date hereof. The Private Securities Litigation Reform Act  of 1995 permits this discussion. Media and Investor Contact:Ashley Cordova,  212-767-7558
 acordova@novocure.com
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