Cliby, William

Importance Ovarian cancer is the eighth most common cause of cancer and cancer death in women worldwide. In 2022, ovarian cancer was diagnosed in approximately 324 398 individuals, and 206 839 died of ovarian cancer worldwide. In 2025, it is estimated that 20 890 US women will be diagnosed with ovarian cancer and 12 730 patients will die of ovarian cancer. Observations Approximately 90% of ovarian cancers are epithelial malignancies, of which 70% to 80% are high-grade serous ovarian cancers. Less common epithelial subtypes include endometrioid, clear cell, low-grade serous, mucinous, and carcinosarcoma. The median age at diagnosis of ovarian cancer is 63 years. Risk factors include older age, family history of breast or ovarian cancer, endometriosis, and nulliparity. Hereditary factors are associated with 25% of cases, predominantly linked to BRCA1 / 2 gene variants. At diagnosis, approximately 95% of patients experience nonspecific symptoms, such as abdominal pain, bloating, and urinary urgency and frequency, and about 80% have advanced-stage disease (stage III-IV), including extrapelvic disease, ascites, and abdominal masses. Diagnostic and staging evaluation includes pelvic ultrasound; computed tomography of the chest, abdomen, and pelvis; and serum tumor markers such as carbohydrate antigen 125, carbohydrate antigen 19-9, and carcinoembryonic antigen. First-line treatment for early-stage ovarian cancer, defined as limited to the ovary or fallopian tube (stage I) or confined to the pelvis (stage II), is surgery (hysterectomy, bilateral salpingo-oophorectomy, omentectomy, and lymphadenectomy), followed by adjuvant chemotherapy (carboplatin and paclitaxel). With treatment, early-stage ovarian cancer has a 5-year overall survival of 70% to 95%. Advanced-stage ovarian cancer may be treated with primary cytoreductive surgery (removal of all visible cancer in the abdominal cavity) and adjuvant chemotherapy (carboplatin and paclitaxel) or with neoadjuvant chemotherapy followed by cytoreductive surgery and adjuvant chemotherapy. Most patients with advanced-stage ovarian cancer receive maintenance therapy with bevacizumab (a monoclonal antibody that blocks angiogenesis) and/or poly–adenosine diphosphate ribose polymerase (PARP) inhibitors. With treatment, the 5-year overall survival rate for advanced-stage ovarian cancer is 10% to 40%. However, individuals with BRCA -related gene variants have a 5-year overall survival rate of approximately 70% with PARP inhibitor treatment. Despite an initial remission rate of 80%, approximately 75% of patients with advanced-stage disease have ovarian cancer relapse within 2 years. Conclusions and Relevance Approximately 21 000 women are diagnosed with ovarian cancer annually in the US, and approximately 80% have advanced-stage ovarian cancer at diagnosis. First-line treatment of early-stage ovarian cancer is surgery and adjuvant platinum-based chemotherapy. Treatment of advanced-stage ovarian cancer includes cytoreductive surgery, platinum-based chemotherapy, and targeted maintenance therapies such as bevacizumab and/or PARP inhibitors.

Abstract Data evaluating change in body composition during treatment of advanced cancer are limited. Here we evaluated computed tomography (CT)–based changes in muscle mass during treatment for advanced ovarian cancer (OC) and association with outcomes. We analyzed the preoperative and posttreatment skeletal muscle index (SMI), skeletal muscle area normalized for height of 109 patients with advanced OC who underwent primary surgery and platinum-based chemotherapy from 2006 to 2016. Based on an SMI less than 39 cm2/m2, 54.1% of patients were never sarcopenic, 24.8% were sarcopenic on both CT scans, and 21.1% were newly sarcopenic upon treatment completion. Patients who lost muscle during treatment had the worst survival of the 3 groups identified: median survival 2.6 years vs 4.6 years if sarcopenic on both CT scans and 4.8 years if never sarcopenic. Loss of muscle portends a poor prognosis among patients with OC. Additional research is needed to better understand and best mitigate these changes.