Magnetic nanoparticles cook tumors from inside in new cancer trial

This early study tests a new treatment for people with stage 4 solid tumors that have stopped responding to standard care. Patients receive an injection of iron-containing nanoparticles that travel to the tumor, then a machine creates a magnetic field to heat the particles and damage cancer cells. The main goal is to check safety and find the best dose, with 12 participants followed for up to 5 years.