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You are here: Home: PCU 2|2005: Editor's Note
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Editor’s Note |
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Where we’re headed |
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DR LOVE: When you look into your crystal ball, what do you see for prostate cancer clinical research five years from now?
DR D’AMICO: I think in five years we’ll have information on the impact of chemotherapy in earlier disease. There will be other chemotherapies at that point, which will have been proven in advanced disease, and we’ll be getting ready to move those up and test those next in earlier-stage disease.
Concomitant with that, we’ll have the answer as to whether PSA screening decreases mortality. My hope is that it will, particularly in high-risk subsets. Once that answer comes on board, the way we look at prostate biopsy will change — what level of PSA is the trigger point for biopsy, how PSA velocity plays into it, etc. As a result, prostate biopsies may only be directed at those people with the kind of cancers we need to diagnose and treat.
The other thing is genomics and proteomics. Investigators are trying to use these techniques to determine when to biopsy and when to treat and to determine who needs their prostate taken out versus other local or systemic therapies. These tools also may help us identify which patients in the metastatic setting are on the favorable and unfavorable ends of the curve. I think proteomics and genomics will become part of the patient selection process for future clinical trials.
And the final thing is, I’m very happy to see that in the last five years, patients have become more actively involved at different levels, from support groups to lobby groups. Patients have assisted with the design of trials and have encouraged participation. People like Michael Milken have also facilitated financial support for prostate cancer research. The patients’ voice here — just like it was in breast cancer — is so important to keep research dollars coming and to obtain input on the important questions of men afflicted with the disease. All of this is a plus for where we’re heading. |
Interviewing Anthony D’Amico is a lot like being the batting practice pitcher for a big-league slugger — each question seems like a soft lob, which is followed by a titanic blast out of the park. The impromptu conversation snippet posted above is typical of the comprehensive and thoughtful answers Tony provides to almost any question in the field. In this case, he crystalizes where we are and where we hope to be in a few years.
The other interviewees for this program provide additional perspective on this topic, particularly related to the need for interdisciplinary care to foster clinical research. One can make the argument that to a great extent, the future success of prostate cancer clinical research directly relates to the integration and collaboration of the physician specialties of the three speakers featured on this issue of Prostate Cancer Update.
Urologist Len Gomella sees his patients in an interdisciplinary clinic that includes medical oncologists and radiation oncologists like Dr D’Amico. On this program, Dr Gomella presents a patient with high-risk disease, who was managed using a multimodality approach with surgery, radiation therapy and endocrine treatment. On a previous issue of this series, he described the evolution of the multidisciplinary prostate cancer clinic at Thomas Jefferson University’s Kimmel Cancer Center since 1996.
We discuss patients in real time, face to face, and have the ability to really come up with a uniform plan and recommendation. Presenting the spectrum of options to patients and giving them the good things and bad things about different approaches is where we’re at right now in prostate cancer today. We also wanted to create a setting that would serve as an educational conduit not only for the patient and their family but also for the trainees at our center — residents and fellows in radiation oncology, urology and medical oncology.
After each clinic, we have a conference where pathology is reviewed and we discuss the patients’ management, including suitability for protocols. We’ve written several papers and given a number of presentations about this clinic, and generally, patient satisfaction is extraordinarily high. It’s a lot of effort, but when we go home at the end of the day, we feel we have not only done a service for the patient and their family, but also optimized our ability to learn more about the disease.
— Leonard G Gomella, MD |
The interdisciplinary approach at Jefferson and other tertiary centers follows the path set by breast cancer where the early integration of medical oncologists into the treatment process was essential to moving research forward expeditiously. Also on this program, medical oncologist Robert Dreicer elaborates on the evolution of this concept in prostate cancer.
Historically, prostate cancer patients were predominantly managed by my urologic colleagues, who for many years, were a group of surgeons somewhat unique, in that they managed all of urologic disease, including medical aspects.
That paradigm began to change in the late 80s and early 90s, with the recognition that medical oncology had an important role. Of course, there was also an evolving role of radiation therapy over the years. Traditionally, much of urologic research in cancer was surgical based and institution based; ie, “I have 2,000 cases and these are our outcomes. This is what we do.”
As the NCI’s National Prostate Cancer Project came on line — driven in part by urology — there was the introduction of the randomized clinical trial, as with the NSABP with breast and colon cancer in that same era; however, when you delay the trial process for several decades, it takes time to catch up.
Most patients who enter clinical trials come from the community setting, where interdisciplinary urologic oncology management is not the standard. There are certainly some communities in which it works very well, but there are others in which it doesn’t work well at all.
We need to have young urologists entering clinical practice, who are well aware of the interdisciplinary nature of management and can help us evolve therapy of this group of diseases — prostate, bladder, renal and testes cancer — in an interdisciplinary way, and hopefully reproduce the model of our colleagues in breast and colon cancer, where interdisciplinary management results in clinical trials that get done relatively quickly.
Fortunately, we now have major academic urology thought leaders who are taking a leadership role in all of these areas. So, the problem from that end has clearly been fixed. But it takes time, and it’s incumbent upon the urologist — the captain of the ship — to say, for example, to his or her patient, “You have high-risk disease, which will ultimately require the skill sets of a number of my colleagues. I’m going to refer you to a medical oncologist. He or she is not likely to need to do anything now, but I would like you to get to know each other, have a discussion about your disease from another perspective and obtain a sense of what’s out there and what might be coming.”
For example, in our interdisciplinary program at the Cleveland Clinic — patients with biochemical failure are seen by a GU medical oncologist from the start, and that works well. Having done that, the patient has a relationship with two doctors and moves forward. There’s no reason for that paradigm not to work.
Every year, urology residents finish at our shop and other places, and they are well-trained individuals who understand the interdisciplinary nature of the disease. When they get into the community, they will work and act differently. So, it’s a problem that will be fixed, but transitioning to the fix is taking time.
— Robert Dreicer, MD |
The three researchers on this program share a similar view of the future of prostate cancer management. As with breast cancer, local and systemic therapy will be seamlessly provided by an integrated team that constantly seeks research avenues for improved outcomes. Effective tools for prostate cancer control already exist and new molecularly targeted approaches are on the horizon, and it will be essential that physicians and patients work together to see that these interventions are properly applied.
I plan on reinterviewing Dr D’Amico a number of times over the next few years to track our progress on the encouraging course he has outlined. My guess is that five years from now, a new series of research findings will have led to further research questions, but hopefully, our ability to expeditiously answer these will be improved as interdisciplinary research-based care becomes standard for all patients.
— Neil Love, MD
NLove@ResearchToPractice.net
Select publications
Carroll PR et al. Fourth International Conference on Innovations and Challenges in Prostate Cancer: Prevention, Detection and Treatment. J Urol 2004;172(5 Pt 2):3-5. No abstract available
Coleman J et al. Highlights from the Society of Urologic Oncology 4th annual meeting. J Urol 2005;173(3):938-41. Abstract
D’Amico AV et al. Preoperative PSA velocity and the risk of death from prostate cancer after radical prostatectomy. N Engl J Med 2004;351(2):125-35. Abstract
D’Amico AV et al. Prostate specific antigen doubling time as a surrogate end point for prostate cancer specific mortality following radical prostatectomy or radiation therapy. J Urol 2004;172(5 Pt 2):42-6. Abstract
Dotan ZA et al. Pattern of prostate-specific antigen (PSA) failure dictates the probability of a positive bone scan in patients with an increasing PSA after radical prostatectomy. J Clin Oncol 2005;23(9):1962-8. Abstract
Gelmann EP, Semmes OJ. Expression of genes and proteins specific for prostate cancer. J Urol 2004;172(5 Pt 2):23-6. Abstract
Kumar-Sinha C, Chinnaiyan AM. Molecular markers to identify patients at risk for recurrence after primary treatment for prostate cancer. Urology 2003;62(Suppl 1):19-35. Abstract
Lieberman R. Evidence-based medical perspectives: The evolving role of PSA for early detection, monitoring of treatment response, and as a surrogate end point of efficacy for interventions in men with different clinical risk states for the prevention and progression of prostate cancer. Am J Ther 2004;11(6):501-6. Abstract
O’Hara SM et al. Multigene reverse transcription-PCR profiling of circulating tumor cells in hormone-refractory prostate cancer. Clin Chem 2004;50(5):826-35. Abstract
Ornstein DK et al. Serum proteomic profiling can discriminate prostate cancer from benign prostates in men with total prostate specific antigen levels between 2.5 and 15.0 ng/ml. J Urol 2004;172(4 Pt 1):1302-5. Abstract
Papatsoris AG et al. Novel biological agents for the treatment of hormone-refractory prostate cancer (HRPC). Curr Med Chem 2005;12(3):277-96. Abstract
Petricoin EF et al. Clinical proteomics: Applications for prostate cancer biomarker discovery and detection. Urol Oncol 2004;22(4):322-8. Abstract
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