Prostate cancer experts recently gathered at the American Society of Clinical Oncology (ASCO) annual meeting to share research updates. Expert Dr. Maha Hussain reviews clinical trial findings presented at the meeting, potential treatments for FDA approval, and credible sources for prostate cancer research information.
Dr. Maha Hussain is the Deputy Director of the Robert H. Lurie Comprehensive Cancer Center of Northwestern University. Learn more about this expert here.
I’d like to start by asking about developments in prostate cancer research and treatment. Experts recently gathered at the annual American Society of Clinical Oncology meeting, also known as ASCO, to share their research.
So, what were the highlights from that meeting that you feel patients should know about?
I think probably perhaps I can focus on two major – what I would consider major highlights, and those were the results from two randomized Phase III clinical trials.
One of the trials is called the VISION trial. And the VISION trial was a Phase III randomized trial evaluating lutetium-PSMA-617 treatment in patients with metastatic castration-resistant prostate cancer. And the delightful thing about this study is that that study was positive. The PSMA story has been really going on for a few years now. And there’s the PSMA for purposes of scans, imaging, to assess the cancer. And the FDA just approved a PSMA PET imaging this year.
I think it was in May when it was approved. And that would help better define if the cancer is spread or not, and it help with the decision regarding treatment. But the second part is treatment purposes, so identifying the cancer location and trying to attack it with a specific sort of targeted attack to the tumor is really important.
And so, the FDA is currently looking at this particular agent. And I am hopeful that we will hear soon from the FDA, hopefully before the end of the year, and maybe – who knows? – maybe by summer, middle summer or end of summer. Because I do think that would be a major benchmark in there. And so, that’s one thing.
The other clinical trial that I thought was interesting from a data perspective – and for disclosure, I am one of the investigators on this study. And this was an intergroup Southwest Oncology, or SWOG, sponsored clinical trial. So, it’s a federal study that Dr. Aggarwal presented. And this was a study that was aiming at maximizing, again, the anti-tumor therapy with the use of a drug which I call is the younger brother of abiraterone.
So, abiraterone is a drug that is FDA-approved and has been around for several years right now for both castration-resistant prostate cancer and certainly hormone-sensitive metastatic disease. And so, TAK 700 (Orteronel) is a younger brother, I call it, of abiraterone (Zytiga). And one of the potential advantageous when this trial was designed was the fact that you don’t need to use prednisone. And the trial was completed. It was a national clinical trial. And what was interesting is that there is certainly what appears to be a potential benefit, but not in terms of the conclusive based on the way the study was designed.
Having said that, what I thought was remarkable is that patients who basically were only on the control arm was LHRH therapy, so this could’ve been like leuprorelin (Lupron), goserelin (Zoladex), or something like that plus bicalutamide, which is what we call combined androgen deprivation. And that was sort of like the strongest control arm we could do at the time when the trial was designed.
Remarkably, the patients who were on that arm had a median survival of basically 70 months. That’s the median. That’s the bell-shaped curve with the number in the middle. Seventy months is probably the longest ever in any other randomized trials in this disease space, in the hormone-sensitive space. So, that tells us is that men are living longer with prostate cancer, even though it’s metastatic disease; and, yes, it’s not necessarily curable, but men are living longer. And it’s a function of all of the better treatments that are supportive care and everything that was going on.
And so, the control arm, as I mentioned, was the 70.2 months. The actual experimental arm was about 81.1 months. And again, I don’t know where things will go from this. Obviously, I’m not the sponsor not the FDA. But the point here is that men are living longer, and so wellness and health become even more so important than we ever did. And as I tell my patients, every day you’ll live longer. The odds of living longer is there because of better treatments coming on.
So, to me – not to take too much time from the interview – to me, these were the two highlights: new, approved – I’m sorry, new treatment that I’m hoping will be FDA-approved and, obviously, the fact that men are living longer.
How can patients keep up to date on the research that’s going on?
I’m a bit biased, obviously. I’m a member of ASCO.
And what I would recommend to my patients is to look at the cancer.net website. The cancer.net is a website that is an ASCO-generated website specifically for patients and families to review. It is vetted. The committees are not run just by physicians, oncologists, a multidisciplinary team, but also patient representative. So, the lingo and the presentation are lay-friendly, I call it, there.
The other part I would say, the NCI website, and the American Cancer Society, the American Urological Association. I would say there’s a lot of stuff on the media. The difficulty is vetting what is sort of fake, what is not so accurate, or bias versus there. I also think that the NCCN has also some resources for patients.
And one thing I always tell patients: explore, look, but make sure that you talk to your doctor about the meanings of everything because sometimes it can be not – it could be misleading, I should say, or maybe not very clear on what the implications are.