Next-Gen Sequencing Tumor Testing Remains Low in Prostate and Urothelial Cancer Cases

Dr Maurie Markman explores recent data on the low use of next-generation sequencing testing in metastatic prostate and urothelial cancers, highlighting key challenges and opportunities.
https://www.medscape.com/viewarticle/next-gen-sequencing-tumor-testing-remains-low-prostate-and-2025a100036d?src=soc_yt

-- TRANSCRIPT --
Hello. I'm Dr Maurie Markman, from City of Hope. I'd like to discuss what I think is a very interesting analysis that we need to see much more of. It’s perhaps not surprising, but the data, I think, are sobering. The paper was published in JAMA Network Open, entitled, “Trends and Disparities in Next-Generation Sequencing in Metastatic Prostate and Urothelial Cancers.”

As I think most of the listening audience is aware, we are in the midst of an ongoing —I would argue, accelerating — revolution in our understanding of cancer, its development and treatments, based upon our characterization at the molecular level of individual cancers.

This, of course, is changing the treatment paradigms and the drugs that we might have available in the first-, second-, and third-line settings. The question to be asked is, how are we, at a clinical level, keeping up with all of these changes, like those approved by the FDA, and new diagnostic testing with a variety of molecular platforms?

This particular analysis looked at that specific question in metastatic prostate cancer and urothelial malignancies, obviously including bladder cancer. With the new approvals — including tumor agnostic testing, very specific testing, and very molecularly based drugs that are approved for particular abnormalities — they looked at the percentages of patients and the potential disparities in terms of the testing that has been performed.

Here are the results. There were 11,927 patients with prostate cancer. There were 6490 patients with advanced urothelial malignancies; the majority of these were male, but there were females included in this group.

The researchers looked at 2015 vs 2022 data. It's not 2024 data, but it goes all the way to the end of 2022, so, not that long ago. In the metastatic prostate cancer group, 19% of patients had undergone molecular testing or next-generation sequencing in 2015.

By 2022, that number had increased, but only to 27%. Three out of 4 patients with metastatic prostate cancer had not undergone testing to know whether they were potential candidates for specific therapies. I won't even get into the question of potential germline abnormalities that might be observed that are relevant for other discussions.

Among patients with urothelial cancer, in 2015, 14% had undergone such testing. By 2022, this number was substantially increased to 46.6%, but still, that’s less than 1 out of 2 patients. More than 50% of patients had not undergone the testing, and yet we have therapy that might be available for these populations based on such testing.

I should add that the population of Black, African American, and Hispanic patients was actually considerably lower, percentage-wise, than the numbers that I've quoted.

Clearly, there are explanations. There are socioeconomic explanations and insurance coverage explanations. However, the bottom line is that we have therapies available today, and we'll have more in the future, that are based on knowledge of this testing.

Transcript in its entirety can be found by clicking here:
https://www.medscape.com/viewarticle/next-gen-sequencing-tumor-testing-remains-low-prostate-and-2025a100036d?src=soc_yt