title: Absence of prognostic significance of p21(WAF1/CIP1) protein expression in non-small cell lung cancer.
abstract: Prognostic value of p21WAF1/CIP1 expression in non-small-cell lung cancer patients (NSCLC) remains unclear. In this study the authors investigated the clinical significance of p21WAF1/CIP1 expression in a group of 117 NSCLC patients, who underwent curative pulmonary resection. Expression of p21WAF1/CIP1 protein was assessed immunohistochemically and samples showing>5% of positive tumor cells were considered positive. Seventy-six samples (65%) showed positive nuclear p21WAF1/CIP1 protein expression. There was no relationship between the expression of p21WAF1/CIP1 protein and major clinico-pathological factors, and neither there was an impact of p21WAF1/CIP1 protein expression on disease-free and overall survival. p21WAF1/CIP1 protein occurrence was not correlated with previously determined p53 protein expression and there was also no relationship between all possible p21WAF1/CIP1/p53 phenotypes and survival. In uni- and multivariate analysis only stage of disease was independent prognostic factors. These results suggest the lack of prognostic relevance of p21WAF1/CIP1 expression (analyzed separately or jointly with p53 protein) in surgically treated NSCLC patients.
authors.affiliation: Department of Internal Medicine, Endocrinology and Haemostatic Disorders, Medical University of Gdańsk, Poland. ddw@amg.gda.pl
authors.forename: Dorota
authors.initials: D
authors.lastname: Dworakowska
authors.forename: Ewa
authors.initials: E
authors.lastname: Jassem
authors.forename: Jacek
authors.initials: J
authors.lastname: Jassem
authors.forename: Carsten
authors.initials: C
authors.lastname: Boltze
authors.forename: Klaus Hermann
authors.initials: KH
authors.lastname: Wiedorn
authors.forename: Rafał
authors.initials: R
authors.lastname: Dworakowski
authors.forename: Jan
authors.initials: J
authors.lastname: Skokowski
authors.forename: Kazimierz
authors.initials: K
authors.lastname: Jaśkiewicz
authors.forename: Eugenia
authors.initials: E
authors.lastname: Czestochowska
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis*; D002289:Carcinoma, Non-Small-Cell Lung / Q000235:genetics* / Q000401:mortality* / Q000628:therapy; D018797:Cell Cycle Proteins / Q000235:genetics / Q000378:metabolism*; D017024:Chemotherapy, Adjuvant; D003131:Combined Modality Therapy; D050759:Cyclin-Dependent Kinase Inhibitor p21; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics* / Q000401:mortality* / Q000628:therapy; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009367:Neoplasm Staging; D011013:Pneumonectomy / Q000379:methods; D011379:Prognosis; D016016:Proportional Hazards Models; D018714:Radiotherapy, Adjuvant; D012307:Risk Factors; D012680:Sensitivity and Specificity; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D014408:Biomarkers, Tumor; C493956:CDKN1A protein, human; D018797:Cell Cycle Proteins; D050759:Cyclin-Dependent Kinase Inhibitor p21