Protalix BioTherapeutics, Inc. (Amex: PLX) today announced that it has reached an agreement with the United States Food and Drug Administration on the final design of its pivotal phase III clinical trial for its lead product candidate, prGCD, through the FDA's Special Protocol Assessment (SPA) process. The Company expects to initiate enrollment of patients for its phase III clinical trials during the third quarter of 2007.

prGCD is a proprietary plant cell expressed recombinant form of human Glucocerebrosidase (GCD), for the treatment of Gaucher disease, a lysosomal storage disorder in humans.

The phase III clinical trial will take place in leading medical centers in the United States, Israel, where approval from the Israeli Ministry of Health has been received, and other locations worldwide. The clinical trial will initially consist of male and female adult patients with Gaucher disease.

About Protalix BioTherapeutics, Inc.

Protalix is a clinical stage biopharmaceutical company. Its goal is to become a fully integrated biopharmaceutical company focused on focused on the development and commercialization of proprietary recombinant therapeutic proteins to be expressed through its proprietary plant cell based expression system. Protalix's ProCellEx(TM) presents a proprietary method for the expression of recombinant proteins that Protalix believes is safe and scalable and will allow for the cost-effective, industrial-scale production of recombinant therapeutic proteins. Protalix has recently announced that it has received written notice from the United States Food and Drug Administration that it may initiate a phase III clinical trial in the United States of its lead product candidate, prGCD, for its enzyme replacement therapy for Gaucher disease, a lysosomal storage disorder in humans. Protalix is also advancing additional recombinant biopharmaceutical drug development programs.

Safe Harbor Statement:

To the extent that statements in this press release are not strictly historical, all such statements are forward-looking, and are made pursuant to the safe-harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to known and unknown risks and uncertainties that may cause actual future experience and results to differ materially from the statements made. These statements are based on our current beliefs and expectations as to such future outcomes. Drug discovery and development involve a high degree of risk. Factors that might cause such a material difference include, among others, the inherent risks and uncertainties in developing drug platforms and products of the type we are developing; delays in our preparation and filing of applications for regulatory approval; delays in the approval or potential rejection of any applications we file with the FDA, or other health regulatory authorities; any lack of progress of our research and development (including the results of clinical trials being conducted by us); obtaining on a timely basis sufficient patient enrollment in our clinical trials; the impact of development of competing therapies and/or technologies by other companies; our ability to obtain additional financings required to fund our research programs; our ability to establish and maintain strategic license, collaboration and distribution arrangements and to manage our relationships with collaborators, distributors and partners; potential product liability risks and risks of securing adequate levels of product liability and clinical trial insurance coverage; the possible disruption of our operations due to terrorist activities and armed conflict, including as a result of the disruption of operations of regulatory authorities, our subsidiaries, our manufacturing facilities and our customers, suppliers, distributors, couriers, collaborative partners, licensees, and clinical trial sites; and other factors described in our filings with the Securities and Exchange Commission. The statements are valid only as of the date hereof and we disclaim any obligation to update this information.

Protalix BioTherapeutics, Inc.
protalix