BIRC2 and neoplasm: Classification of the tumor-staining by 6 individuals revealed 18.2 +/− 1.6 (43.3%) samples with homogenously strong cIAP1 expression (Fig. 1a,d), whereas weak expression was observed in only 5.8 +/− 1.3 tumors (13.9%) (Fig. 1b,d).