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If testosterone is at castrate level, is hormone therapy useful in recurrent p. Cancer
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yaamba
Regular Member
Joined : Nov 2011
Posts : 169
Posted 10/13/2016 4:22 PM (GMT 0)
My husband is due to see specialist on Mon and we have the latest results :
Psa = 1.5 (risen in short time from nadiir of 0.26)
Testosterone =14.
I looked up information regarding normal testosterone levels and anything below about
35 is considered castrate level.
Is hormone deprivation still given when there is little or no hormone to work on?
I am not sure I understand the significance of an already castrate level of testosterone and hormone therapy. Wouldnt my husband be condidered "castrate resistant" already , even though he has not had any hormone drugs for a few years?
What might be a likely scenario for discussion on Monday? I hate to use the term "castrate" in front of my husband as I do not want him to think he is any less a man than the randy bloke I married nearly 45 years ago. To me, he Still is that same man.
I try not to worry excessively and I almost convince myself that I am managing, but then, if this is the case, how come I am writing this post at 2.13am propped up in a dark bedroom tapping out words on a tablet?
PeterDisAbelard.
Forum Moderator
Joined : Jul 2012
Posts : 6432
Posted 10/13/2016 5:33 PM (GMT 0)
Often hormone therapy will include drugs that suppress the production of testosterone and a drug called an "antiandrogen" (such as bicalutamide/Casodex) to block the action of what little testosterone remains. If his T is down to 14 without being suppressed it seems like his doctors might want to try an antiandrogen to see if that helps.
But his doctors are his doctors. Let us know what they say.
JackH
Veteran Member
Joined : Oct 2013
Posts : 2037
Posted 10/13/2016 5:35 PM (GMT 0)
Your assumptions seem on-track. Most prostate cancers eventually become "castration resistant," which means that they can continue to grow even when androgen levels in the body are extremely low or undetectable.
A PSA level that continues to increase while hormone therapy is successfully keeping androgen levels extremely low is an indicator that a man’s prostate cancer has become resistant to the hormone therapy that is currently being used. Time to discuss Plan B for 2nd line treatments.
Dr WHO
Regular Member
Joined : May 2016
Posts : 280
Posted 10/13/2016 5:38 PM (GMT 0)
My understanding of hormonal resistant prostate cancer may be oversimplified but here it is. Others here may be able to give you a better answer.
While there are a lot of different types of prostate cancer (I know as I have Ductal), you can still break prostate cancer into two types, hormone sensitive and hormone insensitive. Generally the majority of the cancer is hormone sensitive meaning that it needs testosterone to grow. Starve it of testosterone and it dies, and your PSA will go down. The hormone insensitive cancer does not need testosterone to grow and is not effective by the absence of testosterone. After taking hormonal therapy for a time (years), the hormone insensitive cancer will overtake the hormone sensitive and the PSA will start to go up again. At that point other treatment options, like chemo, need to be discussed.
I am on Lupron and have just finished 38 rounds of salvage radiation. My PSA is <0.1 and T level is 17. For me the issue is that Ductal cancer is a rare form that can grow without raising your PSA. Literature suggests the need for using scans in addition to blood work. The RO/MO are worried about
the long term effect of getting that much additional radiation. They are still debating the best way to track it.
Biker56
Regular Member
Joined : May 2014
Posts : 72
Posted 10/13/2016 6:34 PM (GMT 0)
yaamba,
Just a caution to verify the units of measurement and the normal range for testosterone levels. I seem to recall that you are in Australia which may, like Canada, use different units than the US for T measurements. I don't recall the actual units used here in Canada but the "normal" T range is something like 9 to 35 and castrate level is 0.5-0.9.
If your husband has not had hormone therapy since 2012 he should have had some T recovery and indeed would be in the normal range if your units were the same as Canadian units. Of course this could be completely off base, too.
All the best,
JackH
Veteran Member
Joined : Oct 2013
Posts : 2037
Posted 10/13/2016 6:48 PM (GMT 0)
That's a nice point to add, Biker56.
The units of measure are different in Canada and the US...Canada uses nmol/L whereas the US uses ng/dL. I don't know about
other parts of the world.
yaamba's husband's total testosterone level of "14" would be in the castrate range in the US where the units are ng/dL, but 14 would solidly be in the normal range when the units are nmol/L.
Good call and a powerful reminder to always use the units of measure.
Tall Allen
Elite Member
Joined : Jul 2012
Posts : 10645
Posted 10/13/2016 6:59 PM (GMT 0)
Yaamba,
I agree with your assessment that rising PSA with castration-levels of testosterone qualifies as "castration resistant." That means he can probably forgo getting shots of Lupron (or other GnRH agonists or antagonist).
This means that the cancer has evolved to use androgens other than testosterone, and can even make its own androgens. Because of this, there are second-line hormonal medicines that can help stop those things from happening.
As PDA said, sometimes casodex can block activation of the androgen receptor. A more powerful anti-androgen is Xtandi. Ketoconazole can stop androgen production by the adrenal glands. Zytiga can stop androgen production by the adrenal glands
and
from inside the cancer cells. There are several others in clinical trials.
As for the term "castration resistant"... They used to use the term "hormone resistant," but that implied that the cancer was resistant to all hormone therapy -- it wasn't. It was only resistant to chemical castration (chemically blocking the testes from producing testosterone) or physical castration (orchiectomy to remove the testicles). Even then, it is not totally resistant -
any
increase in testosterone levels will make the situation much worse.
I don't think a man is any less of a man if his testicles are removed (chemically or physically), any more than a woman is less of a woman if she has a hysterectomy. Of course it reduces libido, but I hope we are all defined by a lot more than just our sex drive.
George_
Veteran Member
Joined : Apr 2016
Posts : 597
Posted 10/13/2016 7:12 PM (GMT 0)
Here is a conversion tool for the different units of measure of testosterone:
Testosterone Conversion
George
Redwing57
Veteran Member
Joined : Apr 2013
Posts : 2827
Posted 10/13/2016 9:41 PM (GMT 0)
I have always used the term "hormone therapy" when describing my suppressed testosterone, or sometimes the handy "ADT", androgen deprivation therapy. While it certainly is chemical castration, it's all too true that the term still bothers me. Before prostate cancer, honestly I'd never even heard of doing this to a person outside the context of a sexual abuser. The idea that it's a normal disease treatment rather blew my mind early on. I had a very hard time getting to the doctor for the first shot!
He may not like the term, even if it's applicable. I do understand that. It's not that I feel "less of a man", it's just a lifetime of negative associations with the term are hard to overcome.
yaamba
Regular Member
Joined : Nov 2011
Posts : 169
Posted 10/13/2016 11:24 PM (GMT 0)
No wonder I use this forum for all my questions re P. Cancer!!!
Biker56 hit the nail squarely on the head! Yes, we are in Australia, and yes we do use nmol/L. Everything I looked up talked about
ng/dl which is what caused my worry last night. All I saw was the number for total testosterone as 14.
So, using Australian measurements, I imagine that would put my husband in the "normal" range with testosterone level of 14 nmol/L ( normal is defined as 10-33) ..... albeit towards the bottom end of the scale. He had been 12 nmol/L in Jan.
I feel a lot better now. Thanks to you all, especially biker56 for pointing out the difference between measurement levels.
I did not need to have that sleepless night after all.
cheers.
Fairwind
Veteran Member
Joined : Jul 2010
Posts : 4107
Posted 10/14/2016 12:03 AM (GMT 0)
If you wish to lower testosterone to the lowest possible level there is one sure-fire way to do that...Instead of chemical castration (lupron and its clones), actual castration.. it's cheaper than a single Lupron shot and it is far more effective..Then you can add the Casodex to neutralize the tiny bit of "T" remaining form other sources. When the cancer learns how to get around that, you move on to (if you are rich or you can get insurance company approval) Zytiga or Xtandi, which can push the finish line out another 2 or 3 years and in some men more than that....Maybe I'm laying this out a little too brusquely but those are the cards on the table...You gotta play the cards you are dealt....
Biker56
Regular Member
Joined : May 2014
Posts : 72
Posted 10/14/2016 1:05 AM (GMT 0)
Glad to have been able to help, yaamba. Its not often that I feel I have much to contribute here other than my own experiences.
Hormone therapy is no fun but at least it should still be effective for him.
All the best,
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