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  • Title: Incidence and risk of venous thromboembolism according to primary treatment type in women with endometrial cancer: a population-based study.
    Author: Yuk JS, Lee B, Kim K, Kim MH, Seo YS, Hwang SO, Cho YK, Kim YB.
    Journal: BMC Cancer; 2021 Oct 30; 21(1):1166. PubMed ID: 34717579.
    Abstract:
    BACKGROUND: Current prophylaxes and treatments for venous thromboembolism (VTE) in women with gynecologic cancer are mainly guided by studies on solid cancers because studies in gynecologic cancer did not provide sufficient data. Large-scale studies evaluating the incidence and risk of VTE according to therapeutic modality may guide prophylaxis and treatment of VTE in gynecologic cancer. This study was performed to determine the incidence and risk of VTE according to primary treatment type in Korean women with endometrial cancer. METHODS: We selected 26,256 women newly diagnosed with endometrial cancer between 2009 and 2018 from the Korean Health Insurance Review and Assessment Service database. During the total follow-up period and first six months after primary treatments initiation, the incidence and risk of VTE were evaluated according to primary treatment type, that is, no treatment, surgery, radiotherapy, chemotherapy, or hormone therapy. RESULTS: VTE occurred in 136 per 10,000 women during the total follow-up period and in 54 per 10,000 women during the first six months with the highest frequency in women that underwent chemotherapy. During the first year, the monthly incidence of VTE decreased with time among women that underwent no treatment, surgery, or hormone therapy and remained unchanged in those that received radiotherapy or chemotherapy. Compared with women that received no treatment, VTE risk, especially of PE significantly increased in women that underwent chemotherapy (VTE: hazard ratio (HR), 2.334; 95% CI, 1.38-3.949; P = 0.002) (PE: HR, 2.742; 95% CI, 1.424-5.278; P = 0.003) or hormone therapy (VTE: HR, 2.073; 95% CI, 1.356-3.17; P = 0.001) (PE: HR, 2.086; 95% CI, 1.19-3.657; P = 0.01) during the total follow-up period and women that underwent only chemotherapy during the first six months (VTE: HR, 2.532; 95% CI, 1.291-4.966; P = 0.007) (PE: HR, 3.366; 95% CI, 1.496-7.576; P = 0.003). CONCLUSIONS: In this cohort study, the incidence and risk of VTE were highest in women with endometrial cancer that underwent chemotherapy as a primary treatment. Notably, the incidence of VTE decreased over time in women that received no treatment, surgery, or hormone therapy. This study can help guide therapies for prophylaxis and treatment of VTE in women with endometrial cancer.
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