With help of the European Lead Factory, the Phosphodiesterase Inhibitors for Neglected Parasitic Diseases (PDE4NPD) project takes the next step towards developing novel drugs against kinetoplastid parasites such as Trypanosoma brucei, the causative parasite of African sleeping sickness, and Trypanosoma cruzi, causing Chagas disease. Together, PDE4NPD and the EU Lead Factory will screen 450,000 compounds for their potential to inhibit one of the parasite PDEs the project has validated.