Jazz Pharmaceuticals plc: Jazz Pharmaceuticals to Host Zanidatamab KOL Investor Webcast on June 2, 2023

Zanidatamab data to be featured in oral presentation at ASCO 2023
Webcast to follow on June 2, 2023 at 6:45 p.m. CT

DUBLIN, May 25, 2023 /PRNewswire/ -- Jazz Pharmaceuticals plc (Nasdaq: JAZZ) will host a webcast to review the zanidatamab biliary tract cancers (BTC) data being featured in an oral presentation at the 2023 American Society of Clinical Oncology (ASCO) Annual Meeting on June 2, 2023. Previously disclosed positive top-line findings from the pivotal Phase 2b trial of zanidatamab as a monotherapy demonstrated a confirmed objective response rate (cORR) of 41.3% and median duration of response of 12.9 months in patients with previously treated HER2-positive BTC. The ASCO presentation will provide additional safety and efficacy data.

Shubham Pant, M.D., MBBS, a professor in the Department of Gastrointestinal Medical Oncology with a joint appointment in the Department of Investigational Cancer Therapeutics at The University of Texas MD Anderson Cancer Center, will provide an overview of new data from the trial and Jazz senior management will discuss the development and commercialization of zanidatamab.

"There are currently no HER2-targeted therapies approved for patients with BTC; disease control with front-line therapy is modest and patients need treatment options after progression.^i,ii Zanidatamab, a novel HER2-targeted bispecific antibody, is one of the most exciting and near-term programs in our pipeline, and the presentation at ASCO demonstrates its compelling anti-tumor effects in HER2-positive BTC. We are committed to advancing this program as rapidly as possible to potentially transform the lives of patients in critical need," said Rob Iannone, M.D., M.S.C.E., executive vice president, global head of research and development of Jazz Pharmaceuticals. "With our impressive portfolio of oncology therapeutics approaching $1 billion in annual revenue, we remain focused on further enhancing our capabilities, advancing our pipeline and delivering treatments for difficult-to-treat cancers."

Webcast Details
The webcast will start on June 2, 2023, at 6:45 p.m. CT / 7:45 p.m. ET / 12:45 a.m. IST (June 3). Interested parties may register for the webcast in advance here or via the Investors section of the Jazz Pharmaceuticals website at www.jazzpharmaceuticals.com. To ensure a timely connection, it is recommended that participants register at least 15 minutes prior to the scheduled webcast.

A replay of the webcast will be available via the Investors section of the Jazz Pharmaceuticals website at www.jazzpharmaceuticals.com.

About Zanidatamab
Zanidatamab is an investigational bispecific antibody, based on Zymeworks' Azymetric platform, that can simultaneously bind two non-overlapping epitopes of HER2, known as biparatopic binding. This unique design results in multiple mechanisms of action including dual HER2 signal blockade, increased binding and removal of HER2 protein from the cell surface, and potent effector function leading to encouraging antitumor activity in patients. Zymeworks, along with collaborators Jazz and BeiGene, Ltd. (BeiGene), are developing zanidatamab in multiple clinical trials as a targeted treatment option for patients with solid tumors that express HER2.

The U.S. Food and Drug Administration (FDA) has granted Breakthrough Therapy designation for zanidatamab in patients with previously treated HER2 gene-amplified biliary tract cancers (BTC), and two Fast Track designations for zanidatamab: one as a single agent for refractory BTC and one in combination with standard of care chemotherapy for first-line gastroesophageal adenocarcinoma (GEA). Additionally, zanidatamab has received Orphan Drug designations from FDA for the treatment of BTC and GEA, as well as Orphan Drug designation from the European Medicines Agency for the treatment of gastric cancer. Zanidatamab was also granted Breakthrough Therapy designation from the Center for Drug Evaluation (CDE) in China.

About Jazz Pharmaceuticals
Jazz Pharmaceuticals plc (NASDAQ: JAZZ) is a global biopharmaceutical company whose purpose is to innovate to transform the lives of patients and their families. We are dedicated to developing life-changing medicines for people with serious diseases - often with limited or no therapeutic options. We have a diverse portfolio of marketed medicines and novel product candidates, from early- to late-stage development, in neuroscience and oncology. Within these therapeutic areas, we are identifying new options for patients by actively exploring small molecules and biologics, and through innovative delivery technologies and cannabinoid science. Jazz is headquartered in Dublin, Ireland and has employees around the globe, serving patients in nearly 75 countries. Please visit www.jazzpharmaceuticals.com for more information.

Caution Concerning Forward-Looking Statements
This press release contains forward-looking statements, including, but not limited to, statements related to the potential to transform the lives of patients in critical need and other statements that are not historical facts. These forward-looking statements are based on Jazz Pharmaceuticals' current plans, objectives, estimates, expectations and intentions and inherently involve significant risks and uncertainties. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, which include, without limitation, risks and uncertainties associated with pharmaceutical product development, and other risks and uncertainties affecting Jazz Pharmaceuticals and its development programs, including those described from time to time under the caption "Risk Factors" and elsewhere in Jazz Pharmaceuticals plc's Securities and Exchange Commission filings and reports (Commission File No. 001-33500), including Jazz Pharmaceuticals' Annual Report on Form 10-K for the year ended December 31, 2022, as supplemented by our Quarterly Report on Form 10-Q for the quarter ended March 31, 2023, and future filings and reports by Jazz Pharmaceuticals. Other risks and uncertainties of which Jazz Pharmaceuticals is not currently aware may also affect Jazz Pharmaceuticals' forward-looking statements and may cause actual results and the timing of events to differ materially from those anticipated. The forward-looking statements herein are made only as of the date hereof or as of the dates indicated in the forward-looking statements, even if they are subsequently made available by Jazz Pharmaceuticals on its website or otherwise. Jazz Pharmaceuticals undertakes no obligation to update or supplement any forward-looking statements to reflect actual results, new information, future events, changes in its expectations or other circumstances that exist after the date as of which the forward-looking statements were made.

Contacts:

Investors:
Andrea N. Flynn, Ph.D.
Vice President, Head, Investor Relations
Jazz Pharmaceuticals plc
[e-mail]
Ireland, [phone]
U.S., [phone]

Media:
Kristin Bhavnani
Head of Global Corporate Communications
Jazz Pharmaceuticals plc
[e-mail]
Ireland, [phone]
U.S., [phone]

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ⁱ Khankhel ZS et al., Second-line treatments in advanced biliary tract cancer: systematic literature review of efficacy, effectiveness and safety Future Oncol. 2022;18:18, 2321-2338

ⁱⁱ Lamarca A, et al., Second-line chemotherapy in advanced biliary cancer: a systematic review. Ann. Oncol. 2014;25:12, 2328-2338

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