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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 A randomized controlled trial examined interest in and uptake of MC1R testing. Study participants were randomized to either a usual care condition (NCI skin cancer pamphlet for diverse skin types) or an MC1R test offer. Setting University of New Mexico General Internal Medicine clinics. Participants Participants were registered clinic patients (≥ 6 months) and English or Spanish fluent. Of the N=600 recruited to the overall trial, the current study included those 499 participants randomized to the MC1R test offer (44% non-Hispanic white, 49% Hispanic, 79% female; mean age=54). Intervention Participants were presented with the option to log onto the study website to read three educational modules presenting the rationale, benefits and drawbacks of MC1R testing. Main Outcomes and Measures Main outcomes include website logon (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 About half of participants (46%, n=232) elected to learn about MC1R testing by logging onto the website; most that logged on decided to request testing (88%, n=204); and most who requested testing returned the kit (82%, n=167). The strongest predictors of website logon were race/ethnicity and education (non-Hispanic whites and more highly educated were more likely to log on); the strongest predictor of ordering the test was sunburn history. Conclusion 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.

BackgroundHerbicide resistance in weedy plant populations can develop through different mechanisms such as gene flow of herbicide resistance transgenes from crop species into compatible weedy species or by natural evolution of herbicide resistance or tolerance following selection pressure. Results from our previous studies suggest that sub-lethal levels of the herbicide glyphosate can alter the pattern of gene flow between glyphosate resistant Canola®, Brassica napus, and glyphosate sensitive varieties of B. napus and B. rapa. The objectives of this study were to examine the phenological and developmental changes that occur in Brassica crop and weed species following sub-lethal doses of the herbicides glyphosate and glufosinate. We examined several vegetative and reproductive traits of potted plants under greenhouse conditions, treated with sub-lethal herbicide sprays.ResultsOur results indicate that exposure of Brassica spp. to a sub-lethal dose of glyphosate results in altering flowering phenology and reproductive function. Flowering of all sensitive species was significantly delayed and reproductive function, specifically male fertility, was suppressed. Higher dosage levels typically contributed to an increase in the magnitude of phenotypic changes.ConclusionsThese results demonstrate that Brassica spp. plants that are exposed to sub-lethal doses of glyphosate could be subject to very different pollination patterns and an altered pattern of gene flow that would result from changes in the overlap of flowering phenology between species. Implications include the potential for increased glyphosate resistance evolution and spread in weedy communities exposed to sub-lethal glyphosate.