@dutchw I am so happy to hear Keytruda has worked for you with an amazing result! I hope you can still continue this treatment and that you continue to see improvement every day. I was wondering in your experience if at first or at any time you had any side effects with it? My dad was diagnosed with stage 4 NSCLC adenocarcinoma in June and went from Carboplatin + Keytruda + Pemetrexed, where he experienced minimal side effects, to now Keytruda + Pemetrexed. He has always been healthy in a diet rich in vegetables and a non smoker his whole life. But the first few treatments of just Keytruda + Pemetrexed have made him lethargic, rounds of fevers, chills, increased coughing and swollen joints which is hard because he is used to being at minimum moderately active. He’s now considering another chemo (Docetaxl) instead of Keytruda based on the side effects but worried maybe he is stopping Keytruda too soon. If relevant, with the bio marker test he tested at 30% for it which was why Keytruda was recommended by his oncologist.