The prognostic relevance of the proliferation markers Ki-67 and Plk1 in early-stage ovarian cancer patients with serous, low-grade carcinoma based on mRNA and protein expression

  • Since type and duration of an appropriate adjuvant chemotherapy in early-stage ovarian cancer (OC) are still being debated, novel markers for a better stratification of these patients are of utmost importance for the design of an improved chemotherapeutical strategy. In contrast to numerous cancer studies on cellular proliferation based on the immunohistochemistry-driven evaluation of protein expression, we compared mRNA and protein expression of two independent markers of cellular proliferation, Ki-67 and Plk1, in a large cohort of 243 early-stage OC and their relationship with clinicopathological features and survival. Based on marker expression we demonstrate that early-stage OC patients (stages I/II, low-grade, serous) with high expression (Ki-67, Plk1) had a significantly shorter progression-free survival (PFS) and overall survival (OS) compared to patients with low expression (Ki-67, Plk1). Remarkably, based on mRNA expression this significant difference got lost in advanced stages (III/IV): At least for PFS, high levels of Ki-67 and Plk1 correlate with moderately better survival compared to patients with low expressing tumors. Our data suggest that in addition to Ki-67, Plk1 is a novel marker for the stratification of early-stage OC patients to maximize therapeutic efforts. Both, Ki-67 and Plk1, seem to be better suited in early-stages (I/II) as therapeutical targets compared to advanced-stages (III/IV) OC.

Download full text files

Export metadata

Additional Services

Share in Twitter Search Google Scholar
Author:Franz RödelORCiDGND, Shengtao Zhou, Balász Győrffy, Monika RaabORCiD, Mourad SanhajiORCiDGND, Ranadip MandalORCiDGND, Daniel MartinORCiD, Sven BeckerORCiDGND, Klaus StrebhardtORCiD
Parent Title (English):Frontiers in oncology
Publisher:Frontiers Media
Place of publication:Lausanne
Document Type:Article
Date of Publication (online):2020/10/07
Date of first Publication:2020/10/07
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2020/12/08
Tag:Ki-67/MIB1; mRNA and protein expression; ovarian cancer; polo-like kinase 1; prognosis
Institutes:Medizin / Medizin
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Licence (German):License LogoCreative Commons - Namensnennung 4.0