PRC1 and synovial sarcoma: Analysis of these SySa-selective dependencies using the STRING database showed enrichment in protein complexes involved in chromosome organization, WNT signaling, BAF complex, and PRC1 activity (Appendix Fig. S1) which are known dependencies in synovial sarcoma (Brien et al, 2018; Michel et al, 2018; Benabdallah et al, 2023; McBride et al, 2018).