The expression of cdc25A and cdc25B has been studied in some human neoplasms and various results have been obtained (Kudo et al, 1997; Wu et al, 1998; Broggini et al, 2000; Takemasa et al, 2000; Nishioka et al, 2001; Sasaki et al, 2001). This evidence concerns the gene CDC25B and neoplasm.