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Objective: Ovarian cancer is the fifth cause of cancer-related death among women. The benefit of targeted therapy for ovarian cancer patients is limited even if treatment is stratified by molecular signature. There remains a high unmet need for alternative diagnostics that better predict targeted therapy, as current diagnostics are generally inaccurate predictors. Quantitative assessment of functional signal transduction pathway (STP) activity from mRNA measurements of target genes is an alternative approach. Therefore, we aim to identify aberrantly activated STPs in tumour tissue of patients with recurrent ovarian cancer and start phenotype -guided targeted therapy to improve survival without compromising quality of life., Study Design: Patients with recurrent ovarian cancer and either 1) have platinum-resistant disease, 2) refrain from standard therapy or 3) are asymptomatic and not yet eligible for standard therapy will be included in this multi-centre prospective cohort study with multiple stepwise executed treatment arms. Targeted therapy will be available for patients with aberrantly high functional activity of the oestrogen receptor, androgen receptor, phosphoinositide 3-kinase or Hedgehog STP. The primary endpoint of this study is the progression-free survival (PFS) ratio (PFS2/PFS1 ratio) according to RECIST 1.1 determined by the PFS on matched targeted therapy (PFS2) compared to PFS on prior therapy (PFS1). Secondary endpoints include among others best overall response, overall survival, side effects, health-related quality of life and cost-effectiveness., Conclusion: The results of this study will show the clinical applicability of STP activity in selecting recurrent ovarian cancer patients for effective therapies., Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Jurgen Piek reports equipment, drugs, or supplies was provided by InnoSIGN. Phyllis van der Ploeg reports a relationship with Catharina Research Fund that includes: funding grants. Cynthia Hendrikse reports a relationship with Catharina Research Fund that includes: funding grants. Phyllis van der Ploeg reports a relationship with InnoSIGN that includes: funding grants. Cynthia Hendrikse reports a relationship with InnoSIGN that includes: funding grants., (© 2024 The Authors. Published by Elsevier Ltd.)

Objective: Complication rates after cytoreductive surgery are important quality indicators for hospitals that treat patients with advanced-stage ovarian cancer. Case-mix factors are patient and tumor characteristics that may influence hospital outcomes such as the complication rates. Currently, no case-mix adjustment model exists for complications after cytoreductive surgery; therefore, it is unclear whether hospitals are being compared correctly. This study aims to develop the first case-mix adjustment model for complications after surgery for advanced-stage ovarian cancer, enabling an accurate comparison between hospitals., Methods: This population-based study included all patients undergoing cytoreductive surgery for advanced-stage ovarian cancer registered in the Netherlands in 2017-2019. Case-mix variables were identified and assessed using logistic regressions. The primary outcome was the composite outcome measure 'complicated course'. Patients had a complicated course when at least one of the following criteria were met: (1) any complication combined with a prolonged length of hospital stay; (2) complication requiring reintervention; (3) any complication with a prolonged length of stay in the intensive care unit; or (4) 30-day mortality or in-hospital mortality during admission following surgery. Inter-hospital variation was analyzed using univariable and multivariable logistic regressions and visualized using funnel plots., Results: A total of 1822 patients were included, of which 10.7% (n=195) had a complicated course. Comorbidity and tumor stage had a significant impact on complicated course rates in multivariable logistic regression. Inter-hospital variation was not significant for case-mix factors. Complicated course rates ranged between 2.2% and 29.1%, and case-mix adjusted observed/expected ratios ranged from 0.20 to 2.67 between hospitals. Three hospitals performed outside the confidence intervals for complicated course rates. These hospitals remained outliers after case-mix adjustment., Conclusion: There is variation between hospitals regarding complicated course rates after cytoreductive surgery for ovarian cancer in the Netherlands. While comorbidity and tumor stage significantly affected the complicated course rates, adjusting for case-mix factors did not significantly affect hospital outcomes. The limited impact of case-mix adjustment could be a result of the Dutch centralized healthcare model., Competing Interests: Competing interests: None declared., (© IGCS and ESGO 2023. No commercial re-use. See rights and permissions. Published by BMJ.)

Women who carry a BRCA mutation have a greatly increased risk for serous ovarian carcinoma and tubal carcinoma. Since preventative ovarian screening is not effective, these women are advised to undergo prophylactic bilateral salpingo-oophorectomy (pBSO) around the age of 40 years. Following pBSO, hormone replacement therapy is advisable up to the age of 45-50 years, with the exception of those women with a history of breast cancer. The advice for women with a familial history of ovarian carcinoma but without the BRCA mutation is less clear. Based on data from the literature, we suggest considering pBSO only in women with at least two first or second degree family members with epithelial ovarian carcinoma. pBSO is not indicated in women from families without a BRCA mutation who have no family members, or just one family member, with epithelial ovarian carcinoma. In these families the lifetime risk for ovarian cancer is considered to be well below 10%.