BLOGGERS: MARK SCHOLZ, MD & RALPH H. BLUM

The co-authors of Invasion of the Prostate Snatchers, blog alternate posts weekly. We invite you to post your comments.
Showing posts with label hormone blockade. Show all posts
Showing posts with label hormone blockade. Show all posts

Tuesday, May 19, 2015

When “No Action” Can Be “Right Action”

BY RALPH BLUM

Back in 1990, when a suspicious lump was discovered on my prostate, my ignorance of the prostate gland and the possibility of prostate cancer was monumental. No one in my family or even among my close friends had ever had prostate cancer, and it never occurred to me that I might one day have the disease.

Now, 25years later I am still alive, the average man over 50 is more aware of prostate cancer, and also many less toxic and more effective treatment options are available. And yet one thing has not changed: just hearing the doctor say, “I’m afraid it’s cancer,” can leave even the most pragmatic man planning the music for his funeral.

Truth is there is still a lot of misinformation and misunderstanding out there about this disease. So here are some facts that I hope will alleviate some of your fears, and also clarify why I still contend that if you have to have cancer, prostate cancer is the best deal in town.

Prostate cancer is unique among cancers because the mortality rate is so low. According to the American Cancer Society, more than 2 million men who have been diagnosed at some point are living with the disease in the U.S. It’s difficult to determine actual prostate cancer survival rates because most men are around 70 years old when diagnosed, and many of them will die from medical problems unrelated to the disease. But if you check out the “relative” 5-year survival rate of all stages of prostate cancer, you will find it is almost 100%. And that almost 100% of men with low-risk or  intermediate-risk disease live more than 10 years after diagnosis.

Why is it that the statistics for prostate cancer are so much less frightening than for other cancers?
 
1)    The PSA test is an early warning system that other cancers don’t have.
2)    It can easily be diagnosed at an early stage.
3)    In most cases it has an exceptionally slow growth rate.
4)    Extremely effective monitoring and treatment is now available.
5)    It has a pattern of spread that spares critical organs like the brain, lungs and liver.
6)    There is a safety net like no other called “hormone blockade” that induces remissions lasting more than 10 years in men with relapsed disease after surgery or radiation.

So instead of thinking about your funeral, what you really want to be focusing on is not rushing into some form of radical treatment that will virtually guarantee  some degree of impotence or incontinence.

It appears that patients and doctors alike struggle with the idea of “watching” anything called cancer. But unless you have the less common high-risk form of the disease, my advice to you is to consider “Active Surveillance” really carefully, especially if you are over 70. Because bottom line—and it bears repeating—out of over 200,000 men in the U.S. diagnosed annually with prostate cancer, the overwhelming majority will die with the disease, and not from it.

Tuesday, July 30, 2013

Hormone Blockade for Early-Stage Prostate Cancer

MARK SCHOLZ, MD

Being medical oncologists rather than surgeons—and being more impressed by the toxicity of surgery than by its effectiveness—my partners and I hypothesized back in the early 1990s that since testosterone inactivating pharmaceuticals (TIP) are powerful enough to reverse metastatic disease, they should be even more effective against early-stage disease.

Clinical Experience with TIP for Early Stage
In 2011, we published a scientific article in the Clinical Genitourinary Cancer detailing the twelve-year outcome for 73 men who embarked on TIP as primary therapy. In this group of men the average PSA was 9 and the average Gleason score was 7 (intermediate grade). Most of the men had tumors in their prostate large enough to be felt by digital rectal examination. Twenty-one of them maintained a low PSA indefinitely with a single course of TIP—they never needed a second cycle.

Another group of 24 men required periodic repeat cycles of TIP to keep their PSA less than five. In the remaining 28 men, after one or more cycles of TIP, the decision was made to undergo treatment with surgery, seeds or radiation.  However, the average time to treatment was 6.2 years after the first cycle of TIP. Only three of those 28 men ever relapsed after treatment. In summary, this study showed that initial remissions with TIP were universal and that even if the remission was not permanent, treatment with more radical therapy was delayed many years.

In 2012, we published another scientific study in The Prostate, in which we evaluated the effect of 12 months of TIP in 102 men. Twenty-two men were in the Low-Risk category, 30 were Intermediate-Risk and 50 were High-Risk. The median PSA was 7.8 and the median Gleason score was 3 + 4 = 7. The attainment of a clear biopsy after TIP followed by a sustained 7- year remission occurred in forty-five men. The likelihood of durable remission was dependent on the risk category: 82% of Low-Risk, 47% of Intermediate-Risk and 25% of men with High-Risk required no further treatment.

Monitoring TIP’s Effectiveness
One of the beauties of TIP is how easily its anti-cancer effects can be monitored with PSA. Although there is much debate about using PSA for cancer screening, PSA is an amazingly accurate tool for monitoring treatment response. In a study we published in Urology in 2007, we showed that more than 95% of men with newly-diagnosed disease drop their PSA to less than 0.05 within eight months of starting therapy. It’s a rare for cancers to continue producing PSAs above a threshold of 0.05 after six months of TIP therapy.  However, when these rare cancers occur, i.e. when an elevated PSA nadir occurs, it is a flashing sign that aggressive multi-modality therapy should be instituted.

What about Side Effects?
So what is the catch?  To this point TIP sounds like a very logical way to initiate treatment. Even if the disease is not arrested altogether, it delays progression for many years. And men who select TIP as initial therapy can always “jump ship” and undergo radiation or surgery. Delaying surgery or radiation with their potentially irreversible side effects makes sense considering the acclerating pace of medical progress. In this rapidly changing environment, postponing irreversible treatment for even five years is unquestionably an attractive proposition.

The catch is that while TIP side-effects are manageable, they are not trivial. Without attention to diet, notable weight gain occurs. Without regular resistance training and weight lifting, significant muscle weakness will ensue. While on treatment, the majority men lose their sex drive. A loss of sex drive is, however, different than impotence. With medications such as Viagra and Cialis most men on TIP can have erections sufficient for intercourse. Sex can be enjoyed, but it is not sought after with the usual male verve. There is also the potential for additional side effects such as breast enlargement, osteoporosis and hot flashes. As dire as these sound, they are preventable with common medications such as Femara, Prolia and progesterone. However, the side effects are cumulative and become more prominent the longer TIP treatment is continued.

Final Thoughts
Some men are concerned that their cancer will progress if “real treatment” like surgery or radiation is delayed. They forget that surgery and radiation only eradicate the “friendly types” of prostate cancer, the ones that remain contained in the gland. The real danger lies in the possibility of microscopic metastasis. Radiation and surgery have no effect whatsoever on cancer that has already spread. Only TIP circulates throughout the entire body attacking early-stage micro-metastasis in the lymph nodes or bones.

In my next blog, I will be discussing a new, more powerful type of TIP that has recently been approved by the FDA. The enhanced effectiveness of this new drug may enable a shorter course of treatment. And since testosterone levels in the blood remain normal throughout, the risk of lingering side effects should be eliminated.