## -KTS Summary WT1 binding sites: GC rich: EWS–WT1(–KTS) prefers GC-rich WT1 sites Conversely, classic targets like _PDGFA_ are driven by –KTS[31](https://bmccancer.biomedcentral.com/articles/10.1186/1471-2407-13-585#:~:text=Most%20published%20data%20on%20the,lines%20and%20paucity%20of%20patient). - PDGFa ## +KTS Summary EWS–WT1(+KTS) recognizes a novel E(KTS)RE sequence 5′-GGAGG(A/G)-3′ repeated in purine-rich (GA) regions[27](https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0002353#:~:text=On%20the%20other%20hand%2C%20EWS%2FWT1,downstream%20of%20the%20transcriptional%20start). Targets: - LRRC15 [30](https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0002353#:~:text=match%20at%20L297%20identified%20for,NTD%29%20may%20confer%20differential).