The S100A4 has recently emerged as an important protein with the capacity to promote invasion and metastasis of many human neoplasms (Barraclough, 1998; Mazzucchelli, 2002; Taylor et al, 2002; Cho et al, 2003; Lee et al, 2004; Moriyama-Kita et al, 2004). The gene discussed is S100A4; the disease is neoplasm.