Innate Pharma: PACIFIC-9 Phase 3 Trial Readout Timing Updated to H1 2027

Enrollment is complete, but the event-driven study’s expected readout has moved beyond the previous 2026 window.

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• PACIFIC-9 Phase 3 trial led by AstraZeneca evaluates durvalumab in combination with monalizumab or oleclumab in unresectable Stage III NSCLC

MARSEILLE, France--(BUSINESS WIRE)-- Regulatory News:

Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) (“Innate” or the “Company”) today announced that AstraZeneca has updated the expected timing for the PACIFIC-9 Phase 3 trial high-level data readout to the first half of 2027, from the second half of 2026 previously. The revised timing reflects the event-driven nature of the study.

PACIFIC-9 is an AstraZeneca-led Phase 3 trial evaluating durvalumab in combination with monalizumab or oleclumab in patients with unresectable Stage III non-small cell lung cancer (NSCLC) who have not progressed following platinum-based chemoradiation therapy. Enrollment in the trial is complete.

Monalizumab is an anti-NKG2A antibody developed by Innate Pharma in collaboration with AstraZeneca. AstraZeneca obtained full oncology rights to monalizumab in October 2018 through a co-development and commercialisation agreement initiated in 2015.

About Innate Pharma

Innate Pharma S.A. is a global, clinical-stage biotechnology company developing immunotherapies for cancer patients. Leveraging its expertise in antibody engineering and innovative target identification, Innate Pharma is developing innovative and differentiated next-generation antibody therapeutics.

Innate Pharma is advancing a portfolio of differentiated potential first- and/or best-in-class assets, focused on areas of high unmet medical need. Its proprietary pipeline is centered on antibody-drug conjugates (ADCs), led by IPH4502, a differentiated Nectin-4 ADC in clinical development for solid tumors, and supported by a preclinical portfolio of next-generation ADC candidates. In parallel, Innate is advancing two partnered late-stage assets: lacutamab, developed with Sobi for T-cell lymphomas, and monalizumab, developed with AstraZeneca for non-small cell lung cancer (NSCLC).

Innate Pharma has established collaborations with leading biopharmaceutical companies, including Sobi, Sanofi and AstraZeneca, as well as renowned academic and research institutions, to advance innovation in immuno-oncology.

Headquartered in Marseille, France, Innate Pharma is listed on Euronext Paris and Nasdaq in the US.

Learn more about Innate Pharma at www.innate-pharma.com and follow us on LinkedIn and X.

Information about Innate Pharma shares

ISIN code: FR0010331421
Ticker code: Euronext Paris: IPH | Nasdaq: IPHA
LEI: 9695002Y8420ZB8HJE29

Disclaimer on forward-looking information and risk factors

For a discussion of risks and uncertainties, please refer to the Risk Factors (“Facteurs de Risque") section of the Universal Registration Document filed with the French Financial Markets Authority (“AMF”), which is available on the AMF website http://www.amf-france.org or on Innate Pharma’s website, and public filings and reports filed with the U.S. Securities and Exchange Commission (“SEC”), including the Company’s Annual Report on Form 20-F for the year ended December 31, 2025, and subsequent filings and reports filed with the AMF or SEC, or otherwise made public by the Company. References to the Company’s website and the AMF website are included for information only and the content contained therein, or that can be accessed through them, are not incorporated by reference into, and do not constitute a part of, this press release.

This press release and the information contained herein do not constitute an offer to sell or a solicitation of an offer to buy or subscribe to shares in Innate Pharma in any country.

View source version on businesswire.com: https://www.businesswire.com/news/home/20261026687365/en/

Stéphanie Cornen
VP, Investor Relations & Corporate Communications
stephanie.cornen@innate-pharma.fr

Investor Relations
investors@innate-pharma.fr

Media
communication@innate-pharma.fr

Source: Innate Pharma SA

Key Terms

nsclc medical

NSCLC stands for non-small cell lung cancer, which is the most common type of lung cancer. It develops in the lungs and can spread to other parts of the body, making it serious but often treatable if caught early. Understanding NSCLC helps people recognize the importance of lung health and early detection.

chemoradiation therapy medical

A cancer treatment that combines chemotherapy and radiation therapy given together or in a planned sequence; chemotherapy drugs circulate through the body while targeted radiation beams are directed at the tumor. The chemotherapy often acts as a radiosensitizer, making cancer cells more vulnerable to radiation, which can increase treatment effectiveness but also raises the likelihood and severity of side effects compared with either therapy alone.

antibody-drug conjugates (adcs) medical

Antibody-drug conjugates (ADCs) are advanced medicines that combine a targeted antibody with a powerful drug, acting like a guided missile to deliver treatment directly to cancer cells while sparing healthy tissue. This precision approach can improve effectiveness and reduce side effects, making ADCs a promising area of biotech innovation. For investors, advancements in ADC technology can signal potential growth opportunities in the pharmaceutical and healthcare sectors.