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Delcath Systems Announces Publication of CHOPIN Clinical Trial Results in The Lancet Oncology
Publication Highlights Promise of Combined Percutaneous Hepatic Perfusion and Immunotherapy in Metastatic Uveal Melanoma QUEENSBURY, N.Y.--(BUSINESS WIRE)--

About this update from Delcath Systems, Inc.
[{"type":"text","content":"\nPublication Highlights Promise of Combined Percutaneous Hepatic Perfusion and Immunotherapy in Metastatic Uveal Melanoma\n\n\n QUEENSBURY, N.Y.--(BUSINESS WIRE)--\nDelcath Systems, Inc. (Nasdaq: DCTH), (“Delcath” or the “Company”) an interventional oncology company focused on the treatment of primary and metastatic liver cancers, today announced the publication of the full results from the investigator-initiated CHOPIN randomized Phase 2 clinical trial, led by Principal Investigator Professor Ellen Kapiteijn, MD, from Leiden University Medical Center’s Department of Medical Oncology. The publication, titled “Percutaneous hepatic perfusion combined with ipilimumab and nivolumab for metastatic uveal melanoma (CHOPIN): a single-centre, open-label, randomised, phase 2 trial” is published in The Lancet Oncology and presents detailed analyses from the trial, building on the positive topline results previously presented at the European Society for Medical Oncology (ESMO) Congress in October 2025. The link to the article can be found at: https://www.thelancet.com/journals/lanonc/article/PIIS1470-2045(25)00720-X/abstract.\n\n\n“The detailed analyses in this publication reinforce the synergistic potential of combining PHP with immunotherapy, showing not only superior PFS and OS but also enhanced hepatic control and deeper, more durable responses. This approach represents a significant advancement for patients with this challenging disease, where liver-dominant metastases drive poor outcomes,” said Professor Ellen Kapiteijn, MD, Principal Investigator and Lead Author from Leiden University Medical Center’s Department of Medical Oncology.\n\n\n“The full publication in The Lancet Oncology validates the impressive efficacy of combining our liver-directed PHP therapy with immune checkpoint inhibition,” said Gerard Michel, Chief Executive Officer of Delcath Systems. “By more than tripling the 1-year progression-free survival rate and nearly doubling the 2-year overall survival, these results strongly underscore the clinical value of this combination and give us even greater confidence in adoption by treating physicians and patients. We are also encouraged by the potential to explore this paradigm in other liver-dominant cancers.”\n\n\nThe CHOPIN trial randomized 76 patients with metastatic uveal melanoma (mUM; n=38 per arm) to percutaneous he...