RPS15A and cancer: Previous studies have revealed that RPS15A is aberrantly overexpressed in various types of cancer,14, 17, 24 and its expression could promote cell proliferation, tumour angiogenesis and inhibit cell cycle arrest and apoptosis.15, 16, 24, 25, 26, 27, 28 However, the potential effect of RPS15A on cell invasion and metastasis has not been investigated.