"With more than 200,000 patients per year presenting with Cancer of Unknown or Uncertain Primary (CUP) or who would otherwise benefit from this test, this expanding coverage reflects the importance of determining the tumor origin in hard-to-diagnose metastatic cancers and CUP. This is particularly important as new, molecularly-targeted cancer treatments are developed. We believe the Rosetta Cancer Origin Test ™ can help physicians to accurately diagnose tumor origin in order to optimize treatment. The availability and accuracy of our Cancer Origin Test underscores why the uncertainty of CUP is no longer acceptable," Mr. Berlin added.A PPO is a managed care organization of medical doctors, hospitals and other health care providers that has covenanted with an insurer or a third-party administrator to provide health care at reduced rates to the insurer's or administrator's clients. Credentialing is a process whereby provider organizations such as physicians, care facilities and ancillary providers (including testing service providers such as Rosetta Genomics') contract directly with the PPO. About Three Rivers Provider NetworkThree Rivers Provider Network was founded in 1996 as a company that was contracted to provide services for several major auto clients. At that time, its clients needed to access a network that would grant PPO-type discounts without incurring balance billing risks for their members. Over time, given superior results and high levels of satisfaction of service, TRPN was prompted by other companies that focused on group health and workers' compensation to perform similar type services for them. TRPN contracts were uniquely designed for group health, workers' compensation and auto liability claims expanding existing coverage and significantly reducing out-of-network expense. Since that time, TRPN has evolved into the largest and fastest-growing proprietary PPO network in the U.S. The TRPN network is now comprised of more than 600,000 total providers, including more than 5,000 hospitals and 70,000 ancillary facilities. Through its clients, approximately 10 million lives now have access to the TRPN PPO network.