Napsin A as a marker of clear cell ovarian carcinoma
| Autor: | Helena Åkerud, Kathrine Bjersand, Tomas Seidal, Ingiridur Skirnisdottir |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Adult
Cyclin-Dependent Kinase Inhibitor p21 Cancer Research Pathology medicine.medical_specialty Napsin A ROC curves Ovarian tumor BMI Age Surgical oncology Ovarian cancer Genetics medicine Biomarkers Tumor Aspartic Acid Endopeptidases Humans Clear-cell ovarian carcinoma NAPA CCC Aged Neoplasm Staging Aged 80 and over Ovarian Neoplasms business.industry Klinisk medicin Concomitant p21p53 Middle Aged medicine.disease Immunohistochemistry Oncology ROC Curve Clear cell carcinoma Adenocarcinoma Female Clinical Medicine Neoplasm Grading Tumor Suppressor Protein p53 business Clear cell Cyclin-Dependent Kinase Inhibitor p27 Capsule rupture Adenocarcinoma Clear Cell Research Article |
| Zdroj: | BMC Cancer |
| ISSN: | 1471-2407 |
| Popis: | Background: Clear cell carcinomas are aggressive tumors with a distinct biologic behaviour. In a genome-widescreening for genes involved in chemo-resistance, NAPA was over-expressed in cisplatin-resistant cells. The NAPA(protein) Napsin A was described to promote resistance to cisplatin by degradation of the tumor suppressor p53. Methods: Totally 131 patients were included in this study all in FIGO-stages I-II; 16 were clear cell tumors which were compared with 40 Type I tumors and 75 type II tumors according to the markers Napsin A, p21, p53 and p27 and some clinical features. For detection of the markers tissue microarrays and immunohistochemistry were used. Results: Positivity for Napsin A was detected in 12 (80%) out of the 15 clear cell tumors available for analysis compared with 3 (4%) out of the Type I and II tumors in one group (p < 0.001). Differences in p21 status, p53 status, and p21 + p53- status were striking when clear cell tumors were compared with Type I, Type II, and Type I and II tumors in one group, respectively. The p21 + p53-status was associated to positive staining of Napsin A (p = 0.0015)and clear cell morphology (p = 0.0003). In two separate multivariate logistic regression analyses with Napsin A as endpoint both clear cell carcinoma with OR = 153 (95% C.I. 21–1107); (p < 001) and p21 + p53- status with OR = 5.36(95% C.I. 1.6-17.5); (p = 0.005) were independent predictive factors. ROC curves showed that AUC for Napsin A alone was 0.882, for p21 + p53- it was 0.720 and for p21 + p53-Napsin A + AUC was 0.795. Patients with clear cell tumors had lower (p = 0.013) BMI than Type I patients and were younger (p = 0.046) at diagnosis than Type II patients. Clearcell tumors had a higher frequency (p = 0.039) of capsule rupture at surgery than Type I and II tumors. Conclusions: Positivity of Napsin A in an epithelial ovarian tumor might strengthen the morphological diagnosis ofclear cell ovarian carcinoma in the process of differential diagnosis between clear cell ovarian tumors and other histological subtypes. |
| Databáze: | OpenAIRE |
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