Observational studyBreast cancer (Tokyo, Japan)2023
Venous thromboembolism in Japanese patients with breast cancer: subgroup analysis of the Cancer-VTE Registry.
Observational study in Breast cancer (Tokyo, Japan), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- Breast Cancer-Associated Venous Thromboembolism: Risk Factors, Mechanisms, and Clinical Management.Cancers · 2026Review
- Radiotherapy-the not-so-insignificant contributor to cancer-associated venous thrombosis.Research and practice in thrombosis and haemostasis · 2025Review
- Incidence and risk factors for venous thromboembolism in gynecological cancer: the GOTIC-VTE trial.Journal of thrombosis and thrombolysis · 2025Article
- Development and validation of a predictive risk tool for VTE in women with breast cancer under chemotherapy: a cohort study in China.Breast cancer (Tokyo, Japan) · 2025Article
- Reply to "Is venous thromboembolism a time-dependent event in breast cancer patients taking tamoxifen?"Breast cancer (Tokyo, Japan) · 2023Article
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Authors and funding
11 authors at 10 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThis subgroup analysis of the Cancer-VTE Registry, a nationwide, large-scale, multicenter observational study with a 1-year follow-up, assessed real-world data on venous thromboembolism (VTE) among Japanese patients with breast cancer.
methodsPatients with stage II-IV pretreatment breast cancer screened for VTE at enrollment were included. During the 1-year follow-up period, incidences of VTE, bleeding, and all-cause death, and background factors associated with VTE risk were examined.
resultsOf 9,630 patients in the Cancer-VTE Registry analysis set, 993 (10.3%) had breast cancer (973 [98.0%] did not have and 20 [2.0%] had VTE at baseline). The mean age was 58.4 years, 73.4% of patients had stage II cancer, and 94.8% had an Eastern Cooperative Oncology Group performance status (ECOG PS) of 0. Risk factors for VTE at baseline by univariable analysis were age ≥ 65 years, ECOG PS of 2, VTE history, and D-dimer > 1.2 μg/mL. During follow-up, the incidence of symptomatic VTE was 0.4%; incidental VTE requiring treatment, 0.1%; composite VTE (symptomatic VTE and incidental VTE requiring treatment), 0.5%; bleeding, 0.2%; cerebral infarction/transient ischemic attack/systemic embolic event, 0.2%; and all-cause death, 2.1%. One patient with symptomatic VTE developed pulmonary embolism (PE) and died. Incidences of VTE and all-cause death were higher in patients with VTE vs without VTE at baseline.
conclusionsIn Japanese patients with breast cancer, VTE screening before initiating cancer treatment revealed a 2.0% prevalence of VTE. During follow-up, one patient had a fatal outcome due to PE, but the incidences of VTE were low. CLINICAL
trial registrationUMIN000024942; UMIN Clinical Trials Registry: https://www.umin.ac.jp/ctr/ .
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