LGALS4 and Alzheimer disease: Since the goal of our screen was to identify the contribution of 23E10-GAL4 dFB neurons in sleep regulation, we designed a targeted approach by combining these individual AD lines to a 23E10-DBD line [30,31], thus creating 20 new Split-GAL4 lines named FBS for Fan-Shaped Body Splits (see S1 Table for a description of these lines).