Second-Line Immunotherapy Treatment Fails to Improve Mesothelioma Survival
A large international clinical trial of the immunotherapy drug tremelimumab as a second- or third-line treatment option for malignant mesothelioma has produced some disappointing news. Drug maker AstraZeneca has just released an update on the ongoing DETERMINE trial which suggests that the survival rates are roughly the same for previously-treated mesothelioma patients whether they later received treatment with tremelimumab or a placebo. What is Tremelimumab? Cancer cells have the unique ability to thwart the immune system. Tremelimumab is a monoclonal antibody designed to disrupt that ability. It does this by binding to the protein CTLA-4 on the surface of white blood cells, preventing the protein from inhibiting the body’s normal cancer-fighting power. By disabling CTLA-4, tremelimumab is supposed to stimulate…