PRN will have a material participation in greater than [**] of the Commercially Feasible Clinical Trials (as defined hereinafter).
Phase I Clinical Trial means a human clinical trial that is intended to initially evaluate the safety and/or pharmacological effect of a Product in subjects or that would otherwise satisfy requirements of 21 C.F.R. 312.21(a), or its foreign equivalent.
Phase III Clinical Trials means a Clinical Trial for the Product on sufficient numbers of patients to generate safety and efficacy data to support Regulatory Approval in the proposed therapeutic indication, conducted in accordance with current good clinical practices and in accordance with a protocol that has been reviewed by the FDA and reflects any comments or concerns raised by the same.
Phase 3 Clinical Trial means a pivotal clinical trial in humans performed to gain evidence with statistical significance of the efficacy of a product in a target population, and to obtain expanded evidence of safety for such product that is needed to evaluate the overall benefit-risk relationship of such product, to form the basis for approval of an NDA and to provide an adequate basis for physician labeling, as described in 21 C.F.R. § 312.21(c) or the corresponding regulation in jurisdictions other than the United States.
Phase 4 Clinical Trial means a Clinical Trial of a Product conducted after Regulatory Approval of such Product has been obtained from an appropriate Regulatory Authority, which trial is (a) conducted voluntarily by a Party to enhance marketing or scientific knowledge of the Product, or (b) conducted due to a request or requirement of a Regulatory Authority.
Phase I Clinical Study means a human clinical study of a product, the principal purpose of which is a preliminary determination of safety in healthy individuals or patients, as described in 21 C.F.R. 312.21(a).