1670MO Validation of a new risk-assessment model for prediction of venous thromboembolism in cancer outpatients: The ONKOTEV score

The assessment of Venous Thromboembolism (VTE) risk in cancer outpatients still represents an evolving topic. Current international guidelines recommend an intermediate to high-risk group as identified by a Khorana score (KS) ≥ 2 as the cut-off for considering primary prophylaxis. In the previously reported prospective ONKOTEV study, we developed a 4 variables risk-assessment-model (RAM): KS > 2, metastatic disease, vascular/lymphatic compression and previous VTE. The goal of the current study is to validate the ONKOTEV score as a novel RAM in an independent cohort.