R M Feakins1, H E Mulcahy, A Quaglia, A Jawhari, Z Zhang, S E Patchett. 1. Department of Histopathology and Morbid Anatomy, Queen Mary and Westfield College, University of London, Royal London Hospital, London, United Kingdom. rmfeakins@mds.qmw.ac.uk
Abstract
BACKGROUND: p27(Kip1) is a cyclin-dependent kinase inhibitor whose loss is associated with disease progression and an unfavorable outcome in several malignancies. The authors studied its expression in a consecutive series of resected gastric carcinomas. METHODS: Expression of p27(Kip1) in 71 advanced gastric carcinomas and 10 lymph nodes containing metastases was determined using an avidin-biotin-peroxidase immunohistochemical method. The relations between p27(Kip1) expression and pathologic features, patient characteristics, and survival were analyzed. RESULTS: p27(Kip1) levels in gastric carcinomas ranged from 0.63-82.97% (median, 23. 10%; mean, 27.99%). There was no association found between p27(Kip1) expression and patient gender (P = 0.21), patient age (P = 0.13), tumor stage (P = 0.17), tumor grade (P = 0.22), or histologic type (P = 0.72). Univariate analysis showed that long term survival was related to stage (P < 0.0001) and grade (P = 0.03). However, tumors with p27(Kip1) levels above and below the median value were associated with a similar outcome, regardless of whether all cases (P = 0.19) or those without metastatic disease (P = 0.50) or those with residual or metastatic disease (P = 0.92) were included. When entered into a multivariate analysis, stage (P < 0.0001) and grade (P = 0.05), but not p27(Kip1) levels (P = 0.16), were found to be related to patient outcome. In lymph node metastases, p27(Kip1) expression (median, 16.5%) was similar to that found in the corresponding primary lesion (median, 30.9%). CONCLUSIONS: p27(Kip1) may play a role in the pathogenesis and progression of gastric carcinoma, but its expression is unlikely to be useful as a prognostic indicator, at least in European patients with advanced disease. Copyright 2000 American Cancer Society.
BACKGROUND:p27(Kip1) is a cyclin-dependent kinase inhibitor whose loss is associated with disease progression and an unfavorable outcome in several malignancies. The authors studied its expression in a consecutive series of resected gastric carcinomas. METHODS: Expression of p27(Kip1) in 71 advanced gastric carcinomas and 10 lymph nodes containing metastases was determined using an avidin-biotin-peroxidase immunohistochemical method. The relations between p27(Kip1) expression and pathologic features, patient characteristics, and survival were analyzed. RESULTS:p27(Kip1) levels in gastric carcinomas ranged from 0.63-82.97% (median, 23. 10%; mean, 27.99%). There was no association found between p27(Kip1) expression and patient gender (P = 0.21), patient age (P = 0.13), tumor stage (P = 0.17), tumor grade (P = 0.22), or histologic type (P = 0.72). Univariate analysis showed that long term survival was related to stage (P < 0.0001) and grade (P = 0.03). However, tumors with p27(Kip1) levels above and below the median value were associated with a similar outcome, regardless of whether all cases (P = 0.19) or those without metastatic disease (P = 0.50) or those with residual or metastatic disease (P = 0.92) were included. When entered into a multivariate analysis, stage (P < 0.0001) and grade (P = 0.05), but not p27(Kip1) levels (P = 0.16), were found to be related to patient outcome. In lymph node metastases, p27(Kip1) expression (median, 16.5%) was similar to that found in the corresponding primary lesion (median, 30.9%). CONCLUSIONS:p27(Kip1) may play a role in the pathogenesis and progression of gastric carcinoma, but its expression is unlikely to be useful as a prognostic indicator, at least in European patients with advanced disease. Copyright 2000 American Cancer Society.
Authors: Q Zhang; D Hou; Z Luo; P Chen; B Lv; L Wu; Y Ma; Y Chu; H Liu; F Liu; S Yu; J Zhang; D Yang; J Liu Journal: Cell Death Dis Date: 2015-08-27 Impact factor: 8.469