HGF and medulloblastoma: When the cells were exposed to kaempferol, cell cycle arrest occurred at G2/M phase, apparently caused by the down-regulation of CDK1 and cyclin A and B. Kaempferol and other two flavonoids, quercetin and myricetin, prevented the cell migration and metastasis of DAOY (medulloblastoma) cells by inhibiting hepatocyte growth factor (HGF)/Met signaling [136].