Protalix BioTherapeutics Reports Third Quarter 2022 Financial and Business Results

Company to host conference call and webcast today at8:30 a.m. EST

CARMIEL,Israel,Nov. 14, 2022/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, 2022 and provided a business update on recent corporate and regulatory developments.

"We are happy we have reached a significant milestone for our company with the recent BLA resubmission to the FDA," said Dror Bashan, Protalix's President and Chief Executive Officer. "We believe PRX-102, if approved, has the potential to significantly impact patients living with this rare, life-threatening genetic disease. As we approach potential approval and commercialization of PRX-102, we affirm our dedication to our mission of bringing new medicines to patients with serious diseases. We are grateful to our team members and external partners for their continued commitment to this program."

Regulatory Updates

The Company will host a conference call today, November 14, 2022, at8:30 a.m. Eastern Standard Time, to review the corporate and regulatory developments, which will also be available by webcast. To participate in the conference call, please dial the following numbers prior to the start of the call:

Monday, November 14, 2022, 8:30 a.m. Eastern Standard Time (EST)Domestic:             1-877-423-9813International:        1-201-689-8573Conference ID:     13734038

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

Company Link:https://protalixbiotherapeutics.gcs-web.com/events0Webcast Link:https://tinyurl.com/2s6sdx5eConference ID:     13734038

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

The conference call will be available for replay for two weeks on the Events Calendar of the Investors section of the Company's website, at the above link.

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 by the FDA inMay 2012and, subsequently, by the regulatory authorities of other countries. Protalix has licensed to Pfizer Inc. the worldwide development and commercialization rights for taliglucerase alfa, excludingBrazil, 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 stabilized version of the recombinant human α–Galactosidase–A protein for the treatment of Fabry disease; alidornase alfa or PRX–110, for the treatment of various human respiratory diseases or conditions; PRX–115, a plant cell-expressed recombinant PEGylated uricase for the treatment of severe gout; PRX–119, a plant cell-expressed long action DNase I for the treatment of NETs-related diseases; and others. Protalix has partnered with Chiesi Farmaceutici S.p.A., both inthe United Statesand outsidethe United States, for the development and commercialization of pegunigalsidase alfa.

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," "may," "plan," "will," "would," "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: the risk that the FDA will find that the resubmitted BLA for PRX–102 is incomplete or not properly reviewable at the time of submission and, accordingly, refuse to file the resubmitted BLA or request additional information; risks related to the acceptance by the FDA of the resubmitted BLA for PRX–102, and the timing, progress and likelihood of final approval by the FDA and European Medicines Agency (EMA) of the resubmitted BLA and of a Marketing Authorization Application, respectively, for PRX–102 and, if approved, whether the use of PRX–102 will be commercially successful; likelihood that the FDA, EMA or other applicable health regulatory authorities will approve an alternative dosing regimen; risks relating to changes in healthcare laws, rules and regulations inthe United Statesor elsewhere; failure or delay in the commencement or completion of our preclinical studies and clinical trials for our other product candidates, 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 satisfactorily demonstrate non-inferiority to approved therapies; inability or unwillingness of medical investigators and institutional review boards to follow our clinical protocols; and inability to monitor patients adequately during or after treatment; the risk that the FDA, EMA, or other foreign regulatory authorities may not accept or approve a marketing application we file for any of our other product candidates, and other risks relating to the review process; risks associated with the novel coronavirus disease, or COVID–19, outbreak and variants, which may adversely impact our business, preclinical studies and clinical trials; 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 the applicable claims of safety or efficacy, or 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 our collaborators, distributors or partners; risks related to the amount and sufficiency of our cash and cash equivalents and short-term bank deposits; 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 relating to changes to interim, topline or preliminary data from clinical trials that we announce or publish; risk of significant lawsuits, including stockholder litigation, which is common in the life sciences sector; 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; 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; risks related to our expectations with respect to the potential commercial value of our product and product candidates; 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. 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.