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Interest and Uptake of MC1R Testing for Melanoma Risk in a Diverse Primary Care PopulationA Randomized Clinical Trial
JAMA Dermatology ( IF 7.995 ) Pub Date : 2018-06-01 , DOI: 10.1001/jamadermatol.2018.0592
Jennifer L. Hay, Kate Zielaskowski, Kirsten Meyer White, Kimberly Kaphingst, Erika Robers, Dolores Guest, Andrew Sussman, Yvonne Talamantes, Matthew Schwartz, Vivian M. Rodríguez, Yuelin Li, Elizabeth Schofield, Jessica Bigney, Keith Hunley, David Buller, Marianne Berwick

Importance Germline variants in the MC1R gene are common and confer moderate melanoma risk in those with varied skin types. Approaches to precision skin cancer prevention that include genetic information may promote risk awareness and risk reduction in the general population, including Hispanics.

Objective To examine prevalence of interest in and uptake of MC1R testing in the general population and examine patterns across demographic and skin cancer risk factors.

Design, Setting, and Participants A randomized clinical trial examined interest in and uptake of MC1R testing among patients at University of New Mexico General Internal Medicine clinics. Study participants were randomized to either a usual-care condition (National Cancer Institute skin cancer pamphlet for diverse skin types) or an MC1R test offer. Participants were registered clinic patients (≥6 months) and English or Spanish fluent. Of the 600 participants recruited to the overall trial, the present study included those 499 participants randomized to the MC1R test offer.

Interventions Participants were presented with the option to log onto the study website to read 3 educational modules presenting the rationale, benefits, and drawbacks of MC1R testing.

Main Outcomes and Measures Main outcomes include website log on (yes vs no), saliva test kit request (yes vs no), and saliva test kit return for MC1R testing (yes vs no). Demographic and skin cancer risk factors were examined as potential predictors of test interest and uptake.

Results Of the 499 participants (220 [44%] non-Hispanic white, 242 [48%] Hispanic, 396 [79%] female; mean [SD] age, 54 [14.3] years), 232 (46%) elected to learn about MC1R testing by logging onto the website; 204 (88%) of those who logged on decided to request testing; and 167 (82%) of those who requested testing returned the kit. The strongest predictors of website log on were race/ethnicity and education (non-Hispanic whites were more likely to log on [odds ratio for Hispanics vs non-Hispanic whites, 0.5; 95% CI, 0.3-0.7], as were more highly educated individuals [odds ratio for more than high school vs high school or less, 2.7; 95% CI, 1.7-4.3]). The strongest predictor of ordering the test was sunburn history (odds ratio, 5.4; 95% CI, 2.3-12.9 vs no sunburn history).

Conclusions and Relevance There were moderately high levels of MC1R test interest and uptake in this diverse sample. Addressing potential barriers to testing may be warranted as genomic information becomes integrated into general population approaches to the precision prevention of skin cancer.

Trial Registration ClinicalTrials.gov identifier: NCT03130569

更新日期:2018-06-14

 

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