cIAP2 (but not cIAP1 and XIAP) was found to be expressed at a higher level in well-differentiated gastric cancer cell lines (MKN7, MKN74 and NCI-N87) than in moderately (SGC-7901) or poorly differentiated gastric cancer cells (SNU-1, AGS), at the mRNA level. The gene discussed is XIAP; the disease is gastric cancer.