Delcath Systems Receives FDA Clearance Of IND Application For Phase 2 Clinical Trial Of HEPZATO In Liver-Dominant Metastatic Breast Cancer

Delcath Systems, Inc. (NASDAQ:DCTH), an interventional oncology company focused on the treatment of primary and metastatic liver cancers, today announced that the U.S. Food and Drug Administration (FDA) has completed its 30-day review of the Company's Investigational New Drug (IND) application for a Phase 2 clinical trial evaluating HEPZATO™ in combination with standard of care (SOC) for liver-dominant metastatic breast cancer (mBC). With the FDA's review complete, Delcath is now cleared to initiate patient enrollment in the U.S.

The Phase 2 trial will evaluate the safety and efficacy of HEPZATO in combination with SOC versus SOC alone in patients with liver-dominant HER2-negative mBC following the failure of previous treatments. The SOC options will be the physician's choice of eribulin, vinorelbine or capecitabine. Approximately 90 patients will be enrolled in this randomized, controlled trial. The study will take place at more than 20 sites across the United States and Europe, with patient enrollment expected to begin in the fourth quarter of 2025. The trial's primary endpoint, hepatic progression-free survival, is anticipated to be announced by the end of 2028, while results for overall survival, a secondary endpoint, are expected in 2029.

Company management estimates that approximately 7,000 patients annually in the United States are affected by HER2-negative metastatic breast cancer with liver metastases and are candidates for third line treatment. This population includes patients with a significant burden of liver metastases, which are likely to be the primary cause of mortality. By focusing on this demographic, Delcath intends to offer a novel therapeutic option to those patients with limited treatment alternatives.

"This randomized Phase 2 trial marks an important milestone as we expand the clinical investigation of HEPZATO into patients with liver-dominant metastatic breast cancer," said Gerard Michel, Chief Executive Officer of Delcath Systems, Inc. "We are excited to bring new hope to patient populations in indications beyond metastatic uveal melanoma and to further demonstrate the potential of HEPZATO to address unmet needs in oncology. This study underscores our commitment to broadening the applications of HEPZATO and the underlying hepatic delivery system, positioning us as a platform technology that can offer directed treatment options for a variety of liver-dominant cancers."