Perceptions of multi-cancer early detection (MCED) screening tests among underrepresented populations.

Abstract

e22546 Background: Cancer is the second leading cause of death, with higher death rates observed among racial and ethnic minorities and individuals of lower income. MCED tests detect a shared cancer signal in plasma cell-free DNA. Beyond clinical/direct economic benefits, MCED may offer additional benefits (emotional, social, and/or behavioral) associated with a no cancer signal detected (NCSD) result, which might differ depending on socioeconomic status. This study aimed to explore the value of a NCSD result from the perspective of underrepresented individuals from the US general population. Methods: Qualitative interviews informed a cross-sectional online survey administered to adults aged 40-80 years without a cancer diagnosis within the last 5 years and not on cancer treatment. Soft quotas ensured a sample representative of the US population by age, gender, race, and ethnicity. The survey asked about the perceived value of a NCSD result from a hypothetical MCED test and collected sociodemographic and clinical information. Results were summarized descriptively. Results: The 1073 participants were 53% female, mean age 58 years (SD = 11), 67% non-Hispanic white, 12% non-Hispanic Black/African American, 12% Hispanic, 9% other or multiple races, 32% retired and 42% had less than a college degree. Regardless of income or race/ethnicity, nearly all participants (96-98%) viewed a NCSD result as somewhat or very valuable and anticipated maintaining or improving health behaviors (98-100%) and the majority expected positive emotional impacts (66-74%). However, minority groups were more likely than white participants to anticipate making lifestyle changes after a NCSD result (44-58% vs. 28%), increasing behaviors such as: exercising (61-75% vs. 47%), seeking health-related educational material (39-52% vs. 26%), eating healthy (58-78% vs. 47%), receiving vaccines (44-49% vs. 35%), maintaining/increasing adherence to recommended cancer screenings (22-29% vs 33% / 68-74% vs. 66%), and attending doctor visits (43-65% vs. 40%). Minorities also reported being more certain they would increase these behaviors than white participants. Lower to middle household income ( < $120,000) was associated with more positive impacts to self-care and monitoring health, relief, and happiness, and less fear, concern, anxiety, and stress after a NCSD result versus those with an income ≥$120,000. Conclusions: Regardless of income level or race/ethnicity, a negative MCED test result provides additional value to the US general population beyond traditional clinical benefits, has positive impacts on psychological/emotional health, and could promote adherence to or increase preventive healthcare behaviors. Importantly, racial/ethnic minorities and those of low to mid income anticipated greater positive impacts, specifically to preventive health behaviors with a negative MCED result.