https://www.selleckchem.com/products/mdl-28170.html Genome editing using clustered regularly interspaced short palindromic repeats (CRISPR) has been used to great effect in vitro to allow scientists to more rapidly investigate molecular pathways that may be involved in disease. The logical progression for the CRISPR machinery is to move from bench to bedside into the world of therapeutics and clinical diagnostics. Depending upon the intended therapeutic use of CRISPR, there are as many bioanalytical challenges in order to resolve scientific questions as drug development and regulatory questions. The aim of this article is to highlight bioanalytical challenges associated with such a powerful therapeutic tool, and strategies that may be required to facilitate the clinical development of CRISPR.Background High levels of supraventricular ectopy are associated with greater risk of atrial fibrillation, stroke, and death. Little information is available about differences by race/ethnicity in the extent of supraventricular ectopy, or about whether high levels of supraventricular ectopy are associated with impaired left atrial (LA) function and LA enlargement. Methods and Results In the MESA (Multi-Ethnic Study of Atherosclerosis), 1148 participants (47% men; mean age, 67 years) had cardiovascular magnetic resonance imaging in 2010 to 2012, followed by 14-day ambulatory electrocardiographic monitoring in 2016 to 2018. We analyzed participant characteristics and cardiovascular magnetic resonance measures of LA function and structure in relation to average count of premature atrial contractions (PACs) per hour and average number of runs per day of supraventricular tachycardia. In adjusted regression analyses, older age, male ***, White race, elevated NT-proBNP (N-terminal pro-B-type natriuretic peptide), and a history of clinically detected atrial fibrillation were associated with more PACs/hour. Chinese and Hispanic participants had on average fewer PACs/hour than White parti