Geriatric enrollment patterns in clinical trials at a National Cancer Institute.
Journal of Clinical Oncology(2024)
Abstract
e13762 Background: Despite the majority of new cancer diagnoses occurring within the geriatric population, there is a disproportionate rate of clinical trial enrollment within this population. Previous data has estimated enrollment rate to be 18.9% in treatment trials among all adult cancer patients at designated National Cancer Institute Cancer Centers. The objective of this study is to assess geriatric cancer patient clinical trial enrollment rates in a single National Cancer Institute and highlight inequities within cancer care delivery. Methods: We performed a retrospective review of the electronic health record and included patients with cancer ≥ 65 years of age who died at our institution between January 2020 and July 2022. We examined the relationship between cancer type, patient race/ethnic identity, and age and analyzed enrollment in clinical trials. Analyses were conducted using descriptive statistics. Results: Of 117 decedent records analyzed, 11 (9%) were enrolled in treatment clinical trials of which 5 (4.3%) identified as White, 4 (3.4%) Other, and 2 (1.7%) Hispanic. Among the 117 geriatric patient records reviewed, there were 21 Black patients (17.9%) of which 0 (0%) Black patients were enrolled in clinical trials. In comparing enrollment by malignancy type, 5 patients had a hematologic malignancy (leukemia, lymphoma, or multiple myeloma), 3 patients had a genitourinary malignancy, 1 patient had a pancreatic malignancy, 1 patient had an endometrial malignancy, and 1 patient had a breast malignancy. Among all patients analyzed, 37 patients (31.6%) had a hematologic malignancy and 80 patients (68.4%) had a solid tumor malignancy. The average age of enrolled patients was 73, consistent with the average age of all patients analyzed (73.78). Conclusions: Geriatric patients with cancer are disproportionately underrepresented in treatment clinical trials. The inequity is exacerbated when analyzing enrollment among minoritized patients. There was a greater proportion of clinical trial enrollment in patients with hematologic malignancies than solid tumor malignancies, however analysis in larger population samples is necessary. Additional research to identify barriers to clinical trials and methods of increasing geriatric enrollment, including the use of geriatric specific performance scales, is necessary to ensure equitable access and representation in clinical trials. While these results may be skewed in the setting of the COVID-19 pandemic and selection of a decedent population, further research into geriatric accessibility in clinical trials is paramount.
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