The same authors also showed the inhibitory abilities on h-GLYI activity of the flavonoid-similar structure compounds, anthocyanidins, such as delphinidin, cyanidin, and pelargonidin, with delphinidin being the most potent and selective GLYI inhibitor (IC50 = 1.9 μM) in this series, able to significantly suppress human leukemia HL-60 cell growth [32]. This evidence concerns the gene FUT1 and leukemia.