Relugolix (Orgovyx) before Abiraterone (Zytiga)?
After a PSA doubling in three months and then an early January PSMA PET scan which first indicated metastatic Pca, my Fox Chase Surgeon immediately prescribed Bicalutimide (Casodex) and arranged a fairly quick mid January appointment with a medical oncologist. She took me off the Bicalutimide and prescribed Relugolix (Orgovyx). She has informed me that the next drug will be Abiraterone acetate (Zytiga) but not until after my next appointment with her on March 10th, almost two months away. She explained they like to look at the bloodwork and see how I'm handling the Orgovyx first. Is this a normal sequence? After reading and watching some videos, it seems there's some logic to being more quickly aggressive with the medications right from the get go which may be more efficacious. I'm considering asking her to speed up the process. Has anyone any knowledge about this?
Comments
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I don't have any experience with Orgovyx, but I anticipate that it works similar to Lupron. I have experience with Abiraterone, and it is not taken well by all patients. My guess is that your team wants to see how you react to Orgovyx, before adding Abiraterone. If you react well to Orgovyx, then they will start Abiraterone (and Prednisone, as Prednisone usually stops Abiraterone from upsetting the natural functioning of your liver and kidneys), and they will monitor how you react to the Abiraterone. If you suddenly start having issues (liver and kidneys) after adding Abiraterone, then they will most likely stop its use.
In my non-medical opinion, this approach makes good sense (versus adding two reactive chemicals into your body simultaneously), and delaying the addition of Abiraterone for a few months won't make any difference in the final outcome. You may be on that cocktail for up to two years. I was directly placed on the Lupron/Abiraterone/Prednisone cocktail, as I had previously been placed on Lupron, and I did not have any issues with it. I was on that cocktail for two years.
The good news is that cocktail appears to work quite well, as I had my PSA checked today, and I am still undetectable. I have been off of that cocktail for two years now, and I am super excited to still be undetectable.
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Josephg had it right when he says you have time to start the Abiraterone. I had just the shot for a year before I started the pills (Abiraterone/Zytiga) The pills block the non-sex organ originated testosterone. I had the combination for another (2)years. I had the ADT for 6 months before I had HDR Brachytherapy. They brought my PSA from 31 down to 1.3 . Then I had the procedure. I have learned patience is a virtue when it comes to PC. Oh ya don't go out drinking before your bloodwork…..they really look at those liver numbers when you are on the Abiraterone/Prednisone and that can distort the results. Sorry about the metastatic recurrence. Good luck with the treatments and keep your chin up……Patience and Prayers way better than worry.
Buff
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Thanks Buff!
I have always been a patient sort. I'm trying to apply it to my Pca journey, but just can't seem to stay calm all the time. I've been experiencing some very low grade dull pain in my lower right abdomen which is causing me considerable paranoia. I have a meeting tomorrow with radiation doctor. Hopefully she might have some insights. As far as the drinking, I sure could use a few beers, but have pretty much stopped alcohol intake. 😪
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I assume your situation was treating a recurrence? Did you have RP or RT prior to this treatment? I still have a prostate so they're going to give me a full pelvic RT. I had an appointment today. They asked me if I want the conventional 8 week or the hypofractionated 5 week course. I could be wrong, but I think the 5 week being higher dose might be a little more effective in higher risk aggressive cancer which I have, but also has a slightly higher risk of urinary and rectum side effects.
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Hi again,
I agree with above opinions. Your doctor may want to postpone Zytiga, to verify if your case is castrate sensitive.
Nowadays the hormonal treatment incorpores a series of newer and more specific drugs taken alone or concomitantly with the ADT protocol (Orgovyx in your case).
The choice varies from case to case, depending in whichone we "become" classified; castrate resistant or sensitive. In other words, which blockade seems to be enough or works better.
Casodex (bicalutamide) is the old antiandrogen still in use but that is being substituted by the more efficient androgen receptors AR antagonists.
There are Erleada (apalutamide), Xtandi (enzalutamide) and Nubeqa (darolutamide). All these block directly the androgen receptors (the mouth) of prostatic cells. These are typically recommended to castrate sensitive prostate cancer cases, even for those who have metastactic disease.
Another group of androgen receptors antagonists are the CYP17 inhibitors that are more selective to the various androgens circulating in our body (DHEA, etc), precursors to the testosterone.
These include Zytiga, Orteronel, Seviteronel and a fewer more now under clinical study. Zytiga, in particular, have shown success in cases of disease progression under ADT. A state called as metastatic castration-resistant prostate cancer (mCRPC).
Some oncologists still add one more blockade drug, the so called 5-alpha reductase inhibitors such as Avodart (dutasteride) or Proscar (finasteride), which avoids the "manufacturing" synthesis of a more potent androgen, the Dihydrotestosterone.
Well, they all got attached side effects that may be prejudicial to other body functions. Periodical lipids monitoring is required.
Best
VG
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Thanks for your detailed reply Vasco!
Your knowledge astounds me. I'm struggling just remembering a few of these drug names and there applications. I'm trying to educate myself as much as I am able, but beginning to feel like I need to let the professionals make the determinations. Not having knowledge like yours, it's difficult to converse with the doctors, especially when I only get a few minutes with them. I believe at the major cancer centers most of the doctors follow standard protocols at first. Our health care system is certainly not the worst by far, but I sense the doctors at the big centers are overworked and clearly some are way smarter than others. I've read where Orgovyx and Zytiga in combination along with radiation is currently a popular approach to treating metastatic Pca. So, I guess this will be my intro into the metastatic Pca journey. Sounds like a few guys here agree?
Regards,
Steve
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You are welcome. Along my journey of failed treatments, I become curious and devoted to all things related to prostate cancer. I did and continue doing lots of research.
You can take from my above post that there will be always a substitute for a failed therapy. We just need to be vigilant, keep the bandit on the canvas and try keeping the quality of life as a prime goal.
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