Among these, some showed inhibitory action on XIAP (i.e., apigenin, chrysin, quercetin, kaempferol, casticin, neobavaisoflavone, silibinin, naringenin) and survivin (i.e., chrysin, linarin, galangin, quercetin, kaempferol, casticin, irigenin, silibinin, icaritin, icariside II), which are overexpressed in a variety of human cancers and are considered the most potent members of the family [101,102]. Here, BIRC5 is linked to cancer.