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Background  Venous thromboembolism (VTE) is a leading cause of morbidity and mortality in patients with cancer. Expert consensus recommends a risk‐based approach to guide prophylactic anticoagulation to prevent VTE in ambulatory patients with cancer receiving chemotherapy. However, oncology practice patterns for VTE prevention remain unclear.    Patients/Methods  We conducted (i) a retrospective, single‐center cohort study of patients with pancreatic and gastric cancers to examine rates of prophylactic anticoagulation prescription for eligible patients at high risk of VTE based on the validated Khorana score, and (ii) a 15‐question survey of oncology clinicians at the same institution to assess current practice patterns and knowledge regarding VTE risk assessment and primary thromboprophylaxis in February 2020.    Results  Of 437 patients who met study criteria, 181 (41%) had a score of ≥ 3 (high‐risk), and none had an anticoagulation prescription for prophylaxis without an alternate treatment indication. In a survey sent to 98 oncology clinicians, of which 34 participated, 67% were unfamiliar with the Khorana score or guideline recommendations regarding risk‐based VTE prophylaxis, and 90% “never” or “rarely” used VTE risk assessment.    Conclusions  Despite available evidence and existing guideline recommendations for VTE risk assessment for ambulatory patients with cancer, and primary prophylaxis for high‐risk patients, this study demonstrates that there is limited uptake in clinical practice.

Preventing venous thromboembolism in oncology practice: Use of risk assessment and anticoagulation prophylaxis