Skip to main content
main-content

01.12.2018 | Research | Ausgabe 1/2018 Open Access

Journal of Ovarian Research 1/2018

Prognostic value of various subtypes of extracellular DNA in ovarian cancer patients

Zeitschrift:
Journal of Ovarian Research > Ausgabe 1/2018
Autoren:
Katarina Kalavska, Tomas Minarik, Barbora Vlkova, Denisa Manasova, Michaela Kubickova, Andrej Jurik, Jozef Mardiak, Jozef Sufliarsky, Peter Celec, Michal Mego
Wichtige Hinweise
Katarina Kalavska and Tomas Minarik contributed equally to this work.

Abstract

Background

Patients with ovarian cancer represent a heterogeneous population with a variable prognosis and response to chemotherapy. Plasma DNA has been shown to have a prognostic value in different types of cancer including ovarian carcinoma. Whether total circulating DNA, which can be assessed much easier without knowing the tumor-specific mutations, has similar informative value is currently unknown. The aim of this study was to evaluate the prognostic value of extracellular DNA in advanced ovarian cancer.

Methods

This prospective study included 67 patients (pts) with ovarian cancer treated with 1st line paclitaxel and carboplatin (25 pts) and paclitaxel, carboplatin and bevacizumab (42 pts). Thirty-five patients had optimal surgical debulking before chemotherapy. Extracellular DNA was quantified using real time PCR before administration of chemotherapy (67 pts) and after 6 cycles of chemotherapy (44 pts).

Results

Total extracellular DNA (ecDNA), as well as extracellular DNA of nuclear (nDNA) and mitochondrial origin (mtDNA) significantly (p < 0.05) decreased after 6 cycles of chemotherapy (by 54%, 63% and 52%, respectively. Patients with stage I disease had significantly lower mtDNA compared to patients with stage II-IV (8604 vs. 16, 984 ge/mL, p = 0.03). Patients with lower baseline nDNA had superior progression-free (HR = 0.35 (0.14–0.86)) and overall survival (HR = 0.18 (0.04–0.77). The prognostic value of nDNA was confirmed independent of tumor stage and confirmed in multivariate analysis.

Conclusions

Our data suggest that ecDNA of both, nuclear and mitochondrial origin could be added to prognostic markers in ovarian cancer. Analysis of ecDNA does not require the knowledge of tumor-specific mutations in contrast to the quantification of tumor-derived ecDNA. Study of the dynamics and cell type-specific source of the ecDNA could shed light on its biology in cancer and might help to direct the treatment of ovarian cancer.
Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 1/2018

Journal of Ovarian Research 1/2018 Zur Ausgabe

Neu im Fachgebiet Gynäkologie und Geburtshilfe

Meistgelesene Bücher aus dem Fachgebiet

2014 | Buch

Perikonzeptionelle Frauenheilkunde

Fertilitätserhalt, Prävention und Management von Schwangerschaftsrisiken

Ein Praxisbuch für alle, die in der Beratung und Betreuung von Schwangeren und Paaren mit Kinderwunsch tätig sind. Die Herausgeber und Autoren haben alle wichtigen Informationen zusammengetragen, um Frauen sicher zu beraten, zu betreuen und kompetent Verantwortung zu übernehmen.

Herausgeber:
Christian Gnoth, Peter Mallmann

2019 | Buch

Praxisbuch Gynäkologische Onkologie

Dieses kompakte und praxisrelevante Standardwerk richtet sich alle Ärzte in Klinik und Praxis, die Patientinnen mit bösartigen Tumoren des Genitales und der Mamma behandeln. Die 5. Auflage wurde komplett aktualisiert und auf der Basis …

Herausgeber:
Prof. Dr. Edgar Petru, Dr. Daniel Fink, Prof. Dr. Ossi R. Köchli, Prof. Dr. Sibylle Loibl

Mail Icon II Newsletter

Bestellen Sie unseren kostenlosen Newsletter Update Gynäkologie und bleiben Sie gut informiert – ganz bequem per eMail.

Bildnachweise