Decades of diversity initiatives later, certain groups remain 'consistently underrepresented' in cancer trials, GAO says
After more than three decades of instituting government policies to improve clinical trial diversity, certain racial and ethnic groups, as well as adolescents, older adults, women, low-income individuals, and individuals from rural communities “remain consistently underrepresented in cancer clinical trials,” the Government Accountability Office said in a new report released this week.
The GAO report explains many of the federal efforts around increasing diversity, particularly in federally-funded cancer trials, with DOD, HHS, and VA developing research collaborations, modifying research practices, reducing barriers to patient participation with payments and via other means, and collecting and sharing more data.
But there are still major gaps.
For example, Congress mandated that the NIH include women and persons from racial and ethnic groups other than non-Hispanic white populations in clinical trials, but an analysis that searched NIH’s clinical trials database in January 2013 found that NIH’s National Cancer Institute sponsored or co-sponsored 10,000 clinical trials, and that less than 2% of these trials focused on racial or ethnic groups other than non-Hispanic white populations.
The report also highlights one study of Black men — whose incidence rate of prostate cancer is 70% greater than that of white men and whose mortality rate is 2.5 times higher than white men —”looked at availability of prostate cancer clinical trials by county and population. It found that the counties with a higher proportion of Blacks were less likely to have access to both cancer facilities and prostate cancer trials,” GAO notes.
The cost burden associated with cancer trials can also push some of these under-served populations away. Another study cited by GAO found that overall, 48% of the patients in cancer clinical trials had monthly out-of-pocket costs of at least $1,000, forcing many patients to turn to savings, retirement accounts, borrowing money from friends and family, holding a fundraiser, and working extra hours or an additional job.
But federal agencies have sought to increase the enrollment of diverse groups of patients with recommendations for researchers on setting minimum requirements for trial enrollment, broadening patient eligibility criteria, and intentional enrollment of underrepresented populations.
The GAO report comes as Congress recently attached several provisions to the year-end spending bill that aim to increase trial diversity. Moving forward, sponsors will be required to submit a “diversity action plan” for Phase III trials, including specifying enrollment goals upfront.
But the FDA has the ability to waive such a requirement if an indication is too small or for other discretionary reasons. Congress is mandating that the FDA publish guidance on such action plans with more details, including on whether to grant a sponsor’s request to waive the requirement.
The agency will have two years to issue a report on what the diversity action plans have done up until then in terms of boosting the enrollment of minorities and typically underrepresented populations.
Outside of the federal government, the GAO also found that 17 non-federal cancer centers put together a range of practices designed to facilitate enrollment of patients from diverse backgrounds in cancer clinical trials. GAO reviewed practices falling into four categories: (1) organization-level practices, (2) community-level practices, (3) workforce-level practices, and (4) patient-level practices, and said that of the 17 centers reviewed, 15 noted implementing practices in at least three of the four categories.