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Background: Identifying sex-related differences is critical for enhancing our understanding of factors that may impact prognosis and advance treatments in Huntington's disease (HD)., Objectives: To investigate if sex-related differences exist in clinical HD., Methods: Longitudinal study of the Enroll-HD database. Manifest HD patients were included in the analysis (N = 8401). Linear mixed models were used to assess motor, behavioral, and cognitive functioning over a series of four annual visits, and compared male and female HD gene carriers., Results: HD patients showed significant sex-dependent differences in motor, cognitive, and behavioral symptoms. Both sexes had worsened motor symptoms over the course of four visits, but there was a significant disparity between sexes, with females consistently presenting with more symptoms than males. For behavioral symptoms, specifically depressive symptoms, females had significantly more depressive symptoms, although self-reported symptoms in both sexes became less severe throughout time., Conclusions: Our analyses suggest that women have worse symptoms than men during the course of HD., Competing Interests: This study did not receive specific funding. The Enroll‐HD is a CHDI Foundation Project. There are no conflicts of interest to report., (© 2021 International Parkinson and Movement Disorder Society.)

The Crystal Diagnostics (CDx) Xpress™ LM kit is used for rapid screening of low concentrations of Listeria monocytogenes on environmental surfaces such as stainless steel, plastic, and ceramic tile. In addition to the Xpress LM kit, the CDx Xpress System comprises an automatic Xpress Reader, a BioCassette™ that incorporates antibody-coupled microspheres, and liquid crystal for selective identification of the intended microbe. All 56 of the 56 tested L. monocytogenes strains evaluated were detected, and 50 of the 50 nontarget bacterial strains were excluded when the test was conducted under the described kit conditions. Shelf-life testing of the antibody-coated microspheres and other CDx consumables indicated that all materials were stable for a minimum of 6 months (ongoing), and lot-to-lot testing demonstrated no significant differences among lots. The internal and independent laboratory tests on stainless steel, plastic, and ceramic tile surfaces demonstrated that the method is equivalent to the U.S. Department of Agriculture (USDA) reference method, and there were no significant differences between the CDx Xpress LM kit presumptive and confirmed results for any of the matrixes. Overall, the CDx Xpress LM kit is one of the fastest to provide the sensitivity and specificity equivalent to the USDA reference method in screening low levels of L. monocytogenes surface contamination and, when combined with chromogenic culturing of presumptive positives, provides a streamlined confirmation process to rapidly and accurately differentiate L. monocytogenes from other microbes.