Home | Contact Us | FAQ | Search & Site Map | Link to Us
Sign In | Join | Other 45 Sites in Network
Home
Discussion Groups
General
GeneralCardiologyVisionDentistryPharmacyLaboratoryNutritionAlternative
Diseases and Disorders
AIDSAlzheimer'sArthritisAsthmaCancerBreast CancerDiabetesEpilepsyGlaucomaHepatitisHerpesLupusProstate BPHProstate CancerProstatitisSinusitisTinnitus

Medical Forum / Diseases and Disorders / Prostate Cancer / August 2005

Tip: Looking for answers? Try searching our database.

No Advantage to Neoadjuvant HT with RT

Thread view: 
Enable EMail Alerts  Start New Thread
Thread rating: 
ron - 14 Aug 2005 16:38 GMT
In the past year or so, at least 4 papers have appeared which suggest
that use of short-term HT with RT (Brachy, HDR, XBRT) provides no
benefit and may even be counterproductive in some cases.  In addition
to the apparent lack of therapeutic advantage, HT adversely impacts QOL
and adds cost...Best wishes and good health, Ron

Int J Radiat Oncol Biol Phys. 2004 Mar 15;58(4):1048-55
Long-term outcome by risk factors using conformal high-dose-rate
brachytherapy (HDR-BT) boost with or without neoadjuvant androgen
suppression for localized prostate cancer.
Galalae RM, Martinez A, Mate T, Mitchell C, Edmundson G, Nuernberg N,
Eulau S, Gustafson G, Gribble M, Kovacs G.
CONCLUSIONS: EBRT with HDR-BT produced excellent long-term outcomes in
terms of BC, DFS, and CSS in patients with prostate cancer even for
those at highest risk. Conformal HDR-BT is both a precise dose delivery
system and an effective treatment for both favorable and unfavorable
prostate cancer. The addition of a short course of
neoadjuvant/concurrent ADT failed to improve outcome. The results were
similar at all three institutions, giving credence to the
reproducibility of the brachytherapy treatment.

Int J Radiat Oncol Biol Phys. 2005 Apr 1;61(5):1299-305
Impact of short course hormonal therapy on overall and cancer specific
survival after permanent prostate brachytherapy
Beyer DC, McKeough T, Thomas T.
CONCLUSIONS: At 10 years, in prostate cancer patients receiving
brachytherapy, overall survival is worse in men receiving neoadjuvant
hormonal therapy, compared with hormone naive patients. This does not
appear to be due to other known risk factors for survival (i.e., stage,
grade, PSA, age) on multivariate analysis. The leading causes of death
were cardiovascular, prostate cancer, and other cancers with no obvious
discrepancy between the two groups. This finding is unexpected and
requires confirmation from other centers.

Int J Radiat Oncol Biol Phys. 2005 Aug 1;62(5):1309-15
Neoadjuvant hormone therapy and external-beam radiation for localized
high-risk prostate cancer: The importance of PSA nadir before
radiation.
Ludgate CM, Bishop DC, Pai H, Eldridge B, Lim J, Berthelet E, Blood P,
Piercy GB, Steinhoff G.
Conclusion Improved bDFS in patients with high-risk prostate cancer was
associated with lower initial PSA level, lower Gleason score, and lower
preradiation PSA level. The duration of NAHT did not have an impact on
outcomes, but the preradiation PSA was an important predictor of bDFS
in high-risk patients.

Int J Radiat Oncol Biol Phys. 2005 Aug 1;62(5):1322-31.
Lack of benefit from a short course of androgen deprivation for
unfavorable prostate cancer patients treated with an accelerated
hypofractionated regime.
Martinez AA, Demanes DJ, Galalae R, Vargas C, Bertermann H, Rodriguez
R, Gustafson G, Altieri G, Gonzalez J.
Conclusions: Accelerated hypofractionated pelvic EBRT integrated with
TRUS-guided conformally modulated HDR administered to 1,260 patients in
three institutions was an excellent method of delivering very high
radiation dose to the prostate in 5 weeks. Similar high overall,
cause-specific, and biochemical no evidence of disease survival rates
achieved show that prostate HDR can be successfully delivered in
academic and community settings. At 8 years, the addition of a course
of </=6 months of neoadjuvant/concurrent androgen deprivation therapy
to a very high radiation dose did not confer a therapeutic advantage
but added side effects and cost. Furthermore, for the most unfavorable
group, there was a higher rate of distant metastasis and more prostate
cancer-related deaths. We question the value of a short course of
androgen deprivation therapy when used with high-dose radiation.
I. P. Freely - 14 Aug 2005 19:25 GMT
>  In addition
> to the apparent lack of therapeutic advantage, HT adversely impacts QOL
> and adds cost

oooooooohh . . . heresy!  ;-)

I.P.
Alan Meyer - 15 Aug 2005 02:23 GMT
> In the past year or so, at least 4 papers have appeared which suggest
> that use of short-term HT with RT (Brachy, HDR, XBRT) provides no
> benefit and may even be counterproductive in some cases.  In addition
> to the apparent lack of therapeutic advantage, HT adversely impacts QOL
> and adds cost...Best wishes and good health, Ron

What a bummer.  I did the Lupron thing with my HDR in the belief
that it would improve my odds.  I had found a clinical trial showing
an increase in treatment success from 63% without HT to 88%
with, so I went with it.  The trial sample size was in the hundreds.

It's amazing to me how often we get clear, statistically significant,
results from apparently well designed clinical trials, only to find
out later that they're wrong.

   Alan
SY - 15 Aug 2005 02:52 GMT
>It's amazing to me how often we get clear, statistically significant,
>results from apparently well designed clinical trials, only to find
>out later that they're wrong.
>
>    Alan

Considering that it's virtually impossible to account for or control
all the variables, no conclusion is ever finite.

SY
Stephen Jordan - 15 Aug 2005 03:12 GMT
On August 14, Alan Meyer:

Quoting Ron:

>>In the past year or so, at least 4 papers have appeared which suggest
>>that use of short-term HT with RT (Brachy, HDR, XBRT) provides no
>>benefit and may even be counterproductive in some cases.  In addition
>>to the apparent lack of therapeutic advantage, HT adversely impacts QOL
>>and adds cost...

responded:

> What a bummer.  I did the Lupron thing with my HDR in the belief
> that it would improve my odds.  I had found a clinical trial showing
> an increase in treatment success from 63% without HT to 88%
> with, so I went with it.  The trial sample size was in the hundreds.

Caveat.

Don't throw in the towel. Note that Ron cites the studies as finding that
*short term* HT (properly called ADT) is supposedly of little benefit.

There is a huge difference between that (if we understand "short term" to
be defined as a few months at most) and several months of adjuvant ADT,
which is my course. It's only anecdotal, but I can report that post-IMRT I
have scored <0.01 for eight straight months, and was <.1 before that. I'm
doing fine.

And, BTW, what PSA results did Alan achieve?

> It's amazing to me how often we get clear, statistically significant,
> results from apparently well designed clinical trials, only to find
> out later that they're wrong.

No evidence has been produced to support any contention that the studies
upon which Alan (and I) relied were *wrong*, only that different
circumstances produce different results.

Regards,

Steve J

"Facts are stubborn things; and whatever may be our wishes, our
inclination, or the dictates of our passions, they cannot alter the state
of facts and evidence."
 --John Adams
Alan Meyer - 26 Aug 2005 23:58 GMT
...
> There is a huge difference between that (if we understand "short term" to be defined as
> a few months at most) and several months of adjuvant ADT, which is my course. It's only
> anecdotal, but I can report that post-IMRT I have scored <0.01 for eight straight
> months, and was <.1 before that. I'm doing fine.
>
> And, BTW, what PSA results did Alan achieve?
...

I wish I could say I was doing as well as you.

My PSA under Lupron was undetectable.  But after it wore off
it bounced around like mad.  I've had the following PSA readings:

.8  .6  .9  1.8  .5  .6

The .6 is at 18 months after treatment.  My next reading will be
at two years, in January, 2006.

   Alan

Rate this thread:






 
Sign In
Join
My Latest Posts
My Monitored Threads
My Blog
My Photo Gallery
My Profile
My Homepage

Start New Thread
Enable EMail Alerts
Rate this Thread



©2008 Advenet LLC   Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.