Hey, sorry it’s taken me a while to get to this. I don’t study cancer so this is a difficult one for me to answer.
Sometimes is possible to cure people, we have chemotherapy and radiotherapy that can kill cancer cells. They don’t always work though, not everyone can be cured, it depends on what type of cancer they have and how early it’s detected though.
You can also help by relieving the pain caused by cancer and other medication can help to manage the illness, even if it can’t be cured.
Does that answer your question?