This chapter presents methods for exploiting the powerful tools available in the nematode worm Caenorhabditis elegans to understand the in vivo functions of cerebral cavernous malformation (CCM) genes and the organization of their associated signaling pathways. Included are methods for assessing phenotypes caused by loss-of-function mutations in the worm CCM genes
kri-1 and
ccm-3, CRISPR-based gene editing techniques, and protocols for conducting high-throughput forward genetic and small molecule screens.