First U.S. Magnetic Nanoparticle Hyperthermia Trial Launches for Advanced Metastatic Cancers

The first magnetic nanoparticle hyperthermia machine in the United States has been installed to test a new experimental treatment for advanced metastatic cancers. This technology is designed to add controlled heat to standard therapies such as chemotherapy and radiation, potentially improving their effectiveness.

The treatment works in two steps. First, patients receive an IV infusion of iron-oxide nanoparticles that collect in tumors. Then, a special induction system sends electromagnetic waves into the body, heating the nanoparticles and raising the tumor temperature to about 50°C. A protective coating helps control the heat to avoid damaging healthy tissue. Patients are monitored closely and use cooling blankets to keep their overall body temperature safe.

The current clinical trial focuses on patients with metastatic solid tumors (not including brain tumors) that no longer respond to chemotherapy or radiation. The machine was installed in November 2025, and the first U.S. patient started treatment in December 2025. Unlike older hyperthermia methods, which were uncomfortable and less precise, this new approach can target tumors deep in the body and potentially treat multiple sites at the same time. If successful, it may help make hyperthermia a standard option for difficult-to-treat cancers.