DKK1 and Mobius syndrome: These analyses supported our RT-qPCR-based MB subgroup classification that was based on the expression of DKK1 and WIF1 or SFP1 and HHIP. Combined with more comprehensive data presented in Fig. 1C, D, these findings support that MYC expression is highest in group 3 MBs, though MYC is also notably elevated in WNT MBs.