SHH and medulloblastoma: In particular, we found that primary cilium expression was low across young CGNPs and young medulloblastoma patients, which was somewhat unexpected given the importance of primary cilia for SHH pathway activity (Bangs et al., 2015; Chang et al., 2019; Corbit et al., 2005; Haycraft et al., 2005; Huangfu and Anderson, 2005; Huangfu et al., 2003; May et al., 2005; Ong et al., 2020; Rohatgi et al., 2007; Sasai and Briscoe, 2012).