Hi @chedder2008, I'm glad that his doctors performed the biomarker testing to identify the mutation, but sorry to hear that he is stage 4. Now that you know what's driving the cancer, it can be treated with precision and appropriately.
Give the Tagrisso some time. Side effects for the targeted therapies can be worse during the initial days but may lessen over time. Recommend that he drinks water, it can help the body process and flush the medication.
I take a different targeted therapy for a different mutation, ALK. I'm also stage 4, and I'm doing well. There is more hope in lung cancer today than ever before. He's in good hands. How is he handling the weight of the diagnosis?