A cancer therapy, described as a "trojan horse" approach, has shown promising results in treating certain types of cancer. The therapy appears to selectively target and kill cancer cells, with some reports indicating a significant drop in cancer biomarkers. However, the specific types of cancer and details of the therapy's application vary across reports, with mentions of Kaposi's sarcoma, prostate cancer, and blood cancer, as well as an unrelated reference to a universal nasal spray vaccine.