Thanks, Lisa! I'll check that discussion out. I'm thinking we need to know specifics on my mom's mutation as we haven't been told exactly what her's is. He has shared that it is likely her cancer develops a resistance to this Tagrisso, is that common for all mutations or more likely just for my mom's, do you know?

Thankfully she is physically doing quite well. We discovered her cancer from her suddenly sensing numbness in her lower body and a mysterious bladder issue. After a couple of months of her doctor and some specialists scratching their heads a neurologist at Mayo discovered a lesion in her sacrum that is pressing on the nerves controlling her bladder and lower body, then found the primary in her left lung. She had immediate radiation for 5 days on the sacrul lesion and is starting this TKI Tagrisso tomorrow to tackle the left lung lesion and the mets in her brain. Emotionally, it's a rollercoaster but we're taking things one day at a time.