Underrepresentation of Racial and Ethnic Minorities in Metastatic Colorectal Carcinoma Clinical Trials Within the United States.
[OBJECTIVE] To investigate whether underrepresentation of racial and ethnic minorities exists in metastatic colorectal carcinoma (CRC) clinical trials.
- p-value P = 0.034
APA
Pu T, Gustafson A, et al. (2026). Underrepresentation of Racial and Ethnic Minorities in Metastatic Colorectal Carcinoma Clinical Trials Within the United States.. Annals of surgery, 283(2), 316-325. https://doi.org/10.1097/SLA.0000000000006500
MLA
Pu T, et al.. "Underrepresentation of Racial and Ethnic Minorities in Metastatic Colorectal Carcinoma Clinical Trials Within the United States.." Annals of surgery, vol. 283, no. 2, 2026, pp. 316-325.
PMID
39145378
Abstract
[OBJECTIVE] To investigate whether underrepresentation of racial and ethnic minorities exists in metastatic colorectal carcinoma (CRC) clinical trials.
[BACKGROUND] Representation of vulnerable subpopulations is essential for the generalizability of clinical trials. Limited studies to date have investigated the racial and ethnic representation of patients enrolled in clinical trials for metastatic CRC.
[METHODS] ClinicalTrials.gov was queried for metastatic CRC clinical trials in the United States from 2000 to 2020. Incidence data were extracted from the SEER Database. Enrollment fraction was defined as the number of trial participants divided by U.S. incidence of metastatic CRC in each race, ethnicity, and sex. Representation quotient (RQ) was defined as the proportion of trial participants divided by the proportion of U.S. metastatic CRC incidence for each subgroup.
[RESULTS] A total of 8084 patients from 135 clinical trials were analyzed. Of clinical trials, 49.6% reported race data and 34.8% reported ethnicity data. Compared with 2000 to 2009, 2010 to 2019 had increased representation data reporting for race (61.2% vs 38.8%) and ethnicity (64.6% vs 35.4%). Of trials with race data, White patients represented 77.0%, Black patients 6.6%, Asian/Pacific Islander patients 16.1%, American Indian/Alaska Native patients 0.2%, and Hispanic patients 6.8%. Black patients (median RQ: 0.54), Asian/Pacific Islander patients (median RQ: 0.19), American Indian/Alaska Native patients (median RQ: 0.00), and Hispanic patients (median RQ: 0.26) were underrepresented. Black patients had a higher degree of underrepresentation in clinical trials with serum creatinine inclusion criteria (RQ: 0.40 vs 0.86, P = 0.034).
[CONCLUSIONS] Strategies are needed to increase minority enrollment in clinical trials for metastatic CRC. Identification of systemic barriers is integral in public policy advocacy to increase representation.
[BACKGROUND] Representation of vulnerable subpopulations is essential for the generalizability of clinical trials. Limited studies to date have investigated the racial and ethnic representation of patients enrolled in clinical trials for metastatic CRC.
[METHODS] ClinicalTrials.gov was queried for metastatic CRC clinical trials in the United States from 2000 to 2020. Incidence data were extracted from the SEER Database. Enrollment fraction was defined as the number of trial participants divided by U.S. incidence of metastatic CRC in each race, ethnicity, and sex. Representation quotient (RQ) was defined as the proportion of trial participants divided by the proportion of U.S. metastatic CRC incidence for each subgroup.
[RESULTS] A total of 8084 patients from 135 clinical trials were analyzed. Of clinical trials, 49.6% reported race data and 34.8% reported ethnicity data. Compared with 2000 to 2009, 2010 to 2019 had increased representation data reporting for race (61.2% vs 38.8%) and ethnicity (64.6% vs 35.4%). Of trials with race data, White patients represented 77.0%, Black patients 6.6%, Asian/Pacific Islander patients 16.1%, American Indian/Alaska Native patients 0.2%, and Hispanic patients 6.8%. Black patients (median RQ: 0.54), Asian/Pacific Islander patients (median RQ: 0.19), American Indian/Alaska Native patients (median RQ: 0.00), and Hispanic patients (median RQ: 0.26) were underrepresented. Black patients had a higher degree of underrepresentation in clinical trials with serum creatinine inclusion criteria (RQ: 0.40 vs 0.86, P = 0.034).
[CONCLUSIONS] Strategies are needed to increase minority enrollment in clinical trials for metastatic CRC. Identification of systemic barriers is integral in public policy advocacy to increase representation.
MeSH Terms
Humans; Colorectal Neoplasms; United States; Clinical Trials as Topic; Male; Female; Minority Groups; SEER Program; Ethnic and Racial Minorities; Ethnicity; Patient Selection
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