A new gene therapy approach is being explored for its potential to treat cancers linked to herpesvirus. The therapy is described as highly targeted and may selectively kill cancer cells, although it is unclear which specific type of cancer it is intended to treat, with various reports mentioning different types, including Kaposi's sarcoma, bile duct cancer, and pancreatic cancer. The development is seen as a potentially significant advancement in cancer treatment, but its specifics and applications are not yet clearly defined.