Will begin a Pfizer starting on Monday. I will post more later as it goes. We are adding a drug to Xtandi to treat solid tumors. I have been on and off Xtandi a few times. I am chemo naive. In the past had a very heavy tumor load and received 3 rounds of Lu-177 from Ishita Sen, Fortis health in Delhi. 18 months later 2 more rounds. I currently have 4 small tumors and a PSA of 1.54 and climbing. My physical fitness includes 200 - 300 minutes of high intensity work outs. I feel out standing. Get a little rib pain where the two most active lesions are located. I am posting this because of an interesting statement Dr. Sen made to me. After a second Guardant360 test two years after a complete normal test I have developed the P53 variant . Not good for standard of care as I understand it. However, in 2019 when I presented with a heavy tumor load 24+ lesions and PSMA avid we were not sure how well I would do. I am a low PSA emitter and Gleason 9 all 12 cores tested. The point I want to bring up is that she remarked that now she can see why I responded so well to Lu-177. I will post part of her reply to me. This is only FYI ..you can take it anyway you want. I will not respond to arguments I am only throwing this out.
Dr. Sen "While almost 50% of mCRPC patients demonstrate P53 mutation either in the native tumour or as an acquired defect, it has been advocated as one of the reasons for refractory PCa. Pca harbouring the P53 gene is often unresponsive to Docetaxel as well.
Having said that these defective genes also make the tumour more radiosensitive. Probably the reason why you had such a good response with lu177 psma therapy. "
Keep flying! Blue Skies!
Sky King and Penny ( woof)