Access to therapies for all patients
Novel and effective therapies can make a difference only if patients have access to them, and a key obstacle to improving breast cancer care is racism and inequities in health care. “We have to acknowledge that there is racism in medicine. I think once we acknowledge that, then we can look at things in our practices that we need to change. We can think very broadly and look at things that perhaps disadvantage one population over another,” said Lori Pierce, MD, a radiation oncologist with the University of Michigan, Ann Arbor.
Dr. Pierce also emphasized the need to recruit more underrepresented groups to participate in clinical trials. For example, of six breast cancer clinical trials – for margetuximab (Margenza), sacituzumab govitecan (Trodelvy), tucatinib (Tukysa), trastuzumab deruxtecan (Enhertu), alpelisib (Piqray), and talazoparib (Talzenna), only a small percentage included Black, Asian, and Hispanic women. For trastuzumab deruxtecan, which is widely recognized as a best-in-class HER2-targeting antibody drug conjugate, 51% were White, 42% Asian, 6% Hispanic, and 3% Black. For sacituzumab govitecan, a blockbuster drug for triple-negative breast cancer (TNBC), an aggressive subtype of breast cancer that disproportionately affects Black women, only 7% of women enrolled in clinical trials were Black. In clinical trials for margetuximab, approved to treat HER2-positive breast cancer, 80% of participants were White, 5% Black, 6% Asian, and 9% Hispanic.
There is a perception that minorities may be unwilling to participate in clinical trials, but that’s not true, according to Patty Spears, a research manager of the Patient Advocates for Research Council at the University of North Carolina. “We know that there are data that clearly show that patients will go on clinical trials at the same rate, whether they’re Black, White, Asian, or whatever. You have to be able to have them in your system and ask them to go on trial,” she said.
Another panelist told a personal anecdote to illustrate the point. Matthew Ellis, MD, PhD, recalled that he spent 13 years at Washington University in St. Louis, serving one of the more segregated cities in the United States. The city hospital closed, and Washington University and the Siteman Cancer Center signed a contract to treat the underserved population that was suddenly without a source of care. “Subsequent to that, we over-accrued relative to the population of African American patients. What that taught me is it’s nothing to do with the lack of willingness of African Americans to participate in clinical trials. Quite the opposite. It’s the question of access to clinical trials, access to great care, and not creating health care systems that segregate patients into places where they’re not getting access,” he said.