Comment by zoratu

In my MIL's case it was L858R. T790M also present, effectiveness of drug dramatically increased with presence of both. Osimertinib shrunk the tumor from baseball to golfball, and then her left most lung lobe was surgically removed. She was stage 2 at intake and without metastastis. The drug was not approved for that case in 2021 and she was admitted to an ongoing case study for it.