Apologies for interjecting again, but I believe I have some more information that may help. I recently came across Thomas Seyfried's research on cancer. He explains that cancer is a metabolic disease and suggests that effective cancer treatments would target this altered metabolism. I would highly suggest watching "Thomas Seyfried: Cancer: A Metabolic Disease With Metabolic Solutions" on YouTube. He passionately and elegantly explains the origin and driver of cancer on a biological and mechanistic level.

He suggests a "pressure-pulse" approach to cancer treatment where metabolically targeted therapies would put "pressure" on, i.e. slow down the progression of the tumor and weaken it to other "pulse" therapies that would then exert their direct anticancer action with greater effect. This could be added on top of current therapies. For instance, Lomustine could likely be used as part of the "pulse" of anticancer treatments in this approach. Many metabolically targeted treatments are cheap and require no prescriptions (i.e. ketogenic diet, calorie restriction, fasting, supplements that inhibit glutaminase's conversion of glutamine to glutamate). Anyways, just a suggestion. I hope this helps. This is currently the approach we're taking with my dad. 🙂