Danina Kuster , Institute of Molecular Cancer Research, UZH Non-Canonical Mechanisms of Breast Tumorigenesis in BRCA2 Mutation Carriers Laura Leuenberger , Department of Medical Oncology and Hematology, USZ Investigating actionable vulnerabilities of clear cell sarcoma by whole- genome CRISPR/Cas9 knock-out screening Charbel Machaalani , Division of Oncology, Kispi Molecular and Spatial Insights into Treatment Failure in Pediatric Low- Grade Gliomas Giovanni Papa , Institute of Molecular Cancer Research, UZH In vivo and in vitro organoid-based CRISPR screening for gastric tumor suppressors 16:55 Check-in 18:00-19:30 Dinner 19:30-21:30 Poster session 1 (Posters 1-24) Poster Committee: Matthias Altmeyer, Maries van den Broek, Ana GuerreiroStücklin,Michael Hottiger,Mitch Levesque,Massimo Lopes,Enni Markkanen,AnneMüller,Javad Nazarian,Karina Silina