WeeklySA_AdminPROJECTIONS: West African men prone to a disease whose prevalence among this particular group warrants further research…
By WSAM Correspondent
MIAMI, FLORIDA – Prostate cases are expected to explode world-wide, by more than doubling from 1.4 million now to 2.9 million in just 16 years.
Additionally, annual prostate cancer cases worldwide are projected to double by the year 2040, and annual deaths are projected to increase by 85% to almost 700 000 over the same timeframe, according to the report.
This grim forecast, contained in a report compiled by international cancer experts commissioned by medical journal The Lancet and published yesterday, also highlights both ethnic and geographic disparities in the overall burden of prostate cancer, showing that men with West African ancestry are more likely to die from prostate cancer.
While noting this high risk among African men, it emphasised the need for more research into the factors driving these differences. Most of the cases were projected to occur mainly among men in low and middle-income countries.
The Lancet report also highlights the future scenario of prostate cancer prevalence and seeks to guide cancer experts worldwide on how to manage the massive influx of prostate cancer patients projected over the next two decades.
Dr Brandon Mahal, radiation oncologist and translational epidemiologist at Sylvester Comprehensive Cancer Centre at the University of Miami’s Miller School of Medicine, and who was a member of a prestigious group of international experts commissioned to write the collaborative report, said: “Unlike a typical study, which describes a single or set of experiments, commissioned pieces involve The Lancet editors working with academic partners to address the most pressing issues in science, medicine and global health”.
He said the report was conceived back in 2020, when the journal’s editors sought advice from a select group of 40 cancer experts to highlight the increasing burden of prostate cancer, with global cases projected to more than double by 2040.
“Specifically, they wanted our collective, international perspective on this looming global burden,” he said. “They asked us to report the extent of the problem, identify the most at-risk populations and explain how best to address the expected surge.”
Besides outlining the scope of the problem – worldwide cases are expected to explode from 1.4 million now to 2.9 million in just 16 years – The Lancet report highlights both ethnic and geographic disparities in the overall burden of prostate cancer and emphasises the need for more research into the factors driving these differences.
As a translational epidemiologist, Mahal studies differences in disease risk among populations. “Men with West African ancestry, for example, are more than twice as likely to die from prostate cancer,” he said.
Additionally, he and his Sylvester research colleagues had published studies showing that racial and ethnic disparities in prostate cancer prevalence cannot be explained by genetic differences alone.
In 2023, Mahal and his team published a paper showing that men of African ancestry were less likely than their European counterparts to get comprehensive genetic profiles of their tumours early in treatment. Genetic profiling helps physicians develop personalized treatment plans that have been proven more effective in treating prostate cancer. Patients without this initial profiling often receive substandard care.
The experts noted that one of the best ways to improve prostate cancer outcomes is to expand screening among high-risk populations so that the disease can be diagnosed at earlier stages, when treatment is typically most effective.
At Sylvester, Mahal works with a team dedicated to precision community outreach. “We have focused our efforts in neighbourhoods where we know there’s a higher risk of developing prostate cancer,” he explained, “and we use our mobile vehicles to bring the screenings right to these residents.”
The mobile vans, dubbed Sylvester’s Game Changers, enable Mahal and colleagues to target high-risk people by conducting the screenings at key community sites, including near workplaces, stores and libraries, and at health fairs and other events.
The vans are staffed by professionals who speak English, Spanish and Creole to ensure they can communicate with people in their native languages.
Not surprisingly, The Lancet report identifies mobile vans as a key strategy for providing earlier diagnoses in high-risk populations.
Other key recommendations from The Lancet report include:
· Integrating the power of artificial intelligence for interpretation of scans and biopsy samples to improve early diagnosis;
· Focusing more broadly on men’s health beyond prostate cancer;
· Capitalising on the global availability of smartphones in outreach efforts, as well as using social and traditional media to promote education;
· Making sure affordable therapies for advanced prostate cancer are available where needed most; and
· Addressing the shortage of specialist surgeons and radiotherapy equipment in low and middle-income countries (LMICs).
The Lancet Commission on prostate cancer argues that the ‘informed choice’ programme for prostate cancer screening with PSA testing, which is common in high-income countries, may lead to over-testing and unnecessary treatment in older men, and under-testing in high-risk younger men. The report advocates, instead, for early-detection programs for those at high risk.
The commission also calls for urgent implementation of programmes to raise awareness of prostate cancer and for improvements in early diagnosis and treatment in LMICs – where most men present with late-stage disease.
More research involving men of different ethnicities, especially those of West African descent, was needed, as current knowledge of prostate cancer biology is largely based on studies of white men.
Although The Lancet report delivers a sobering message that lifestyle or public health interventions will be insufficient to stem the expected tsunami of prostate cancer cases – and that minority populations and those in LMICs will bear the brunt of this burden – Mahal remains optimistic about his involvement with the project.
“This report creates a unified message for all so we can be best equipped to handle this surge in prostate cancer cases,” he said.
“Whether it’s different medical systems, national or international guidelines, institutions or community practices, we took great pride in our work and believe it can be a reference document for where to focus our efforts moving forward.”
