Protalix BioTherapeutics Reports Third Quarter 2020 Financial Results and Provides Business Update

• Announced FDA acceptance of BLA filing of PRX-102 for the treatment of Fabry disease
• Top-line data from the BRIGHT study expected by end of first quarter, 2021
• Management to host conference call and live webcast today, October 29, at 8:30 am ET

CARMIEL, Israel, Oct. 29, 2020 /PRNewswire/ -- Protalix BioTherapeutics, Inc. (NYSE American: PLX) (TASE: PLX), a biopharmaceutical company focused on the development, production and commercialization of recombinant therapeutic proteins produced by its proprietary ProCellEx^® plant cell-based protein expression system, today reported financial results for the third quarter ended September 30, 2020, and provided a business update on recent corporate and clinical developments.

"This quarter, we delivered on another important milestone for the Company with the FDA's acceptance of, and grant of Priority Review designation to, the biologics license application (BLA) submitted for PRX–102 for the treatment of Fabry disease," said Dror Bashan, Protalix's President and Chief Executive Officer. "We continue to build-out our clinical data profile for PRX–102. The last patient has completed treatment in the BRIGHT study, and we expect to report top-line data from the study by the end of the first quarter, 2021. We remain focused on advancing our earlier stage pipeline as well. We are proud of our team's continued dedication and collaboration in progressing on our corporate mission during these challenging times of the pandemic."

Recent Business Highlights

• Announced U.S. Food and Drug Administration (FDA) acceptance of the BLA submitted for PRX–102 (pegunigalsidase alfa) for the treatment of adult patients with Fabry disease and grant of Priority Review designation to the BLA. The BLA was submitted under the FDA's accelerated approval pathway in collaboration with the Company's development and commercialization partner, Chiesi Global Rare Diseases. The FDA indicated in its communications that it is not currently planning to hold an advisory committee meeting to discuss the application.
• The FDA set an action date of January 27, 2021 under the Prescription Drug User Fee Act (PDUFA) for the BLA. The FDA advised that, as part of its review of the BLA application, it requires an inspection of the Company's manufacturing facility and that of a third party in Europe that performs fill and finish processes for PRX–102. Due to COVID-19 related FDA travel restrictions, the FDA has advised that it may be unable to conduct the inspections prior to the PDUFA date. Together with Chiesi, the Company is diligently exploring potential alternatives that would enable the FDA to meet its timeline. As part of such efforts, Chiesi submitted a request to the FDA for a Type A meeting. The Company anticipates an FDA response to this request during the first week of November 2020.
• Disclosed the completion of the patient treatment period for the Company's phase III BRIGHT clinical trial of PRX–102 for the treatment of Fabry disease. The trial was designed to evaluate the safety and efficacy of 2 mg/kg PRX–102 infused every four weeks, in Fabry patients. The Company expects to report top-line results from the trial by the end of the first quarter, 2021.
• Announced the launch of an Expanded Access Program in the United States for PRX–102 allowing a broader group of physicians and patients, beyond those in the Company's phase III clinical program, access to PRX–102.
• Launched an at-the-market equity offering program with BofA Securities enabling the Company to sell up to $30 million shares of common stock according to the terms and conditions set forth in its agreement with BofA Securities. The program provides the Company with greater capital-raising flexibility as it executes on its commercialization and development plans.

Third Quarter 2020 Financial Highlights

The Company recorded revenues from selling goods of $3.3 million during the three months ended September 30, 2020, a decrease of $1.8 million, or 36%, compared to revenues of $5.1 million for the same period of 2019. The decrease resulted primarily from a timing difference in sales to Brazil in 2020 compared to 2019, which was partially offset by an increase in sales to Pfizer Inc.

Revenues from license and R&D services for the three months ended September 30, 2020 were $7.5 million, a decrease of $1.6 million, or 18%, compared to $9.1 million for the same period of 2019. Revenues from license and R&D services are comprised primarily of revenues the Company recognized in connection with its license and supply agreements with Chiesi. The decrease is primarily due to the completion of two out of the three phase III clinical trials of PRX–102 as well as lower costs related to the Company's phase III BALANCE clinical trial of PRX–102 for the treatment of Fabry disease.

Cost of goods sold for the three months ended September 30, 2020 was $2.9 million, a decrease of $0.3 million, or 11%, compared to $3.2 million for the same period of 2019. The decrease is primarily due to a change in the cost structure as well as lower royalties paid to the Israeli Innovation Authority.

Research and development expenses for the three months ended September 30, 2020 were $7.7 million, a decrease of $2.3 million, or 23%, compared to $10.0 million for the same period of 2019. The decrease is primarily due to the completion of two out of the three phase III clinical trials of PRX–102 and reduced costs related to the BALANCE study as well as a decrease in costs related to manufacturing of the Company's drug in development as some of the manufactured drug product and related costs have been recorded as inventory.

Selling, general and administrative expenses for the three months ended September 30, 2020 were $2.8 million, an increase of $0.2 million, or 9%, compared to $2.6 million for the same period of 2019.

Financial expenses net for the three months ended September 30, 2020 were $1.9 million, a decrease of $0.1 million, or 8%, compared to $2.0 million for the same period of 2019.

Cash, cash equivalents and short-term bank deposits were approximately $41.3 million at September 30, 2020.

Conference Call and Webcast Information:

The Company will host a conference call on Thursday, October 29, 2020 at 8:30 am Eastern Daylight Time, to review the clinical, corporate, and financial highlights. To participate in the conference call, please dial the following numbers prior to the start of the call:

Domestic: 877-423-9813
International: 201-689-8573
Conference ID: 13711708

The conference call will be webcast live from the Company's website and will be available via the following links:

Company Link: https://protalixbiotherapeutics.gcs-web.com/events0
Webcast Link: https://tinyurl.com/y2z676dk
Conference ID: 13711708

Please access the websites at least 15 minutes ahead of the conference to register, download and install any necessary audio software.

About Protalix BioTherapeutics, Inc.

Protalix is a biopharmaceutical company focused on the development and commercialization of recombinant therapeutic proteins expressed through its proprietary plant cell-based expression system, ProCellEx®. Protalix was the first company to gain U.S. Food and Drug Administration (FDA) approval of a protein produced through plant cell-based in suspension expression system. Protalix's unique expression system represents a new method for developing recombinant proteins in an industrial-scale manner.

Protalix's first product manufactured by ProCellEx, taliglucerase alfa, was approved for marketing by the FDA in May 2012 and, subsequently, by the regulatory authorities of other countries. Protalix has licensed to Pfizer Inc. the worldwide development and commercialization rights for taliglucerase alfa, excluding Brazil, where Protalix retains full rights.

Protalix's development pipeline consists of proprietary versions of recombinant therapeutic proteins that target established pharmaceutical markets, including the following product candidates: pegunigalsidase alfa, a modified version of the recombinant human α–Galactosidase–A protein for the proposed treatment of Fabry disease; OPRX–106, an orally-delivered anti-inflammatory treatment; alidornase alfa for the treatment of Cystic Fibrosis; and others. Protalix has partnered with Chiesi Global Rare Diseases, both in the United States and outside the United States, for the development and commercialization of pegunigalsidase alfa.

Forward-Looking Statements

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. The terms "expect," "anticipate," "believe," "estimate," "project," "plan," "should" and "intend," and other words or phrases of similar import are intended to identify forward-looking statements. 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 and the final results of a clinical trial may be different than the preliminary findings for the clinical trial. Factors that might cause material differences include, among others: Risks related to the timing, progress and likelihood of final approval by the FDA of the BLA for PRX–102, by the PDUFA date or at all, which was accepted by the FDA and granted Priority Review designation in August 2020 and, if approved, whether the use of PRX–102 will be commercially successful; failure or delay in the commencement or completion of our preclinical and clinical trials which may be caused by several factors, including: slower than expected rates of patient recruitment; unforeseen safety issues; determination of dosing issues; lack of effectiveness during clinical trials; inability to monitor patients adequately during or after treatment; and inability or unwillingness of medical investigators and institutional review boards to follow our clinical protocols; risks associated with the novel coronavirus disease (COVID–19) outbreak, which may adversely impact our business, preclinical studies and clinical trials; risks related to the amount and sufficiency of our cash and cash equivalents; risks relating to our ability to make scheduled payments of the principal of, to pay interest on or to refinance our outstanding notes or any other indebtedness; risks related to any transactions we may effect in the public or private equity markets to raise capital to finance future research and development activities, general and administrative expenses and working capital; the risk that the results of the clinical trials of our product candidates will not support our claims of safety or efficacy, that our product candidates will not have the desired effects or will be associated with undesirable side effects or other unexpected characteristics; risks related to our ability to maintain and manage our relationship with Chiesi Farmaceutici and any other collaborator, distributor or partner; risks related to the successful conclusion of our negotiations with the Brazilian Ministry of Health regarding the purchase of BioManguinhos alfataliglicerase generally; risks related to our commercialization efforts for BioManguinhos alfataliglicerase in Brazil; risks relating to the compliance by Fundação Oswaldo Cruz with its purchase obligations and related milestones under our supply and technology transfer agreement; the risk that despite the FDA's grant of fast track designation for PRX–102, we may not experience a faster development process, review or approval compared to applications considered for approval under conventional FDA procedures; risks related to the FDA's ability to withdraw the fast track designation at any time; our dependence on performance by third party providers of services and supplies, including without limitation, clinical trial services; 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, and other risks relating to the review process; our ability to identify suitable product candidates and to complete preclinical studies of such product candidates; the inherent risks and uncertainties in developing drug platforms and products of the type we are developing; the impact of development of competing therapies and/or technologies by other companies and institutions; potential product liability risks, and risks of securing adequate levels of product liability and other necessary insurance coverage; and other factors described in our filings with the U.S. Securities and Exchange Commission. The statements in this press release are valid only as of the date hereof and we disclaim any obligation to update this information, except as may be required by law.

Investor Contact
Chuck Padala, Managing Director
LifeSci Advisors
+1-646-627-8390
chuck@lifesciadvisors.com

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SOURCE Protalix BioTherapeutics, Inc.

Company Codes: AMEX:PLX, Frankfurt:PBDA, Dusseldorf:PBD, Stuttgart:PBD, Berlin:PBDA, TelAviv:PLX