PBK and neoplasm: Nuclear/cytoplasmic PBK expression in gastric adenocarcinoma tumor cells was classified as follows: - (306/385, 79.5%), + (67/385, 17.40%), and ++ cytoplasmic expression (12/385, 3.1%); - (234/385, 60.8%), + (117/285, 30.4%), and ++ nuclear expression (34/385, 8.8%).