I posted on here a few months ago about my Mum who has Stage IV NSCLC, was on tarceva for 2 years then had pleural fluid drained and biopsy for t790m which turned out to be positive. She was in pain (not sure if this was biopsy or drain) and was in hospital twice where she had fluid drained again, eventually a catheter installed but caught an infection in hospital and trial closed so she didn't receive tagrisso until January this year and passed away a month later.
I have almost finished my questioning the medical stage so I can move on but my last question is about Avastin (Bevacizumab). Apologies for my ignorance, but if you have EFGR t790m+ do you not have VEGF? Or is it a separate test?
Separate question could the t790m+ mutation change?