As an increased incidence of thrombotic vascular events (TVEs) has been observed in cancer patients receiving erythropoietic agents (see section 4.8), this risk should be carefully weighed against the benefit to be derived from treatment (with Silapo) particularly in cancer patients with an increased risk of thrombotic vascular events, such as obesity and patients with a prior history of TVEs (e.g. deep venous thrombosis or pulmonary embolism).