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High factor VIII levels independently predict venous thromboembolism in cancer patients. The Cancer and Thrombosis Study
Arteriosclerosis, Thrombosis, and Vascular Biology, 09/29/09

Vormittag R et al. – FVIII is independently associated with an increased risk of VTE in cancer patients. The association between FVIII and VTE risk declines with increasing age.

Methods

The prospective observational Cancer and Thrombosis Study includes patients with newly diagnosed cancer or disease progression, study end point is symptomatic VTE
Data on 840 patients (median age: 62 years, 25th to 75th percentile 53 to 68, 378 women) were available for analyses, of these 111 patients had hematologic malignancies and 729 solid cancer

Results

During a median observation time of 495 days 62 events occurred
Cumulative probability of VTE after 6 months was 14% in patients with elevated FVIII-levels and 4% in those with normal levels
The association was strongest in younger patients, whereas in 40-year-old patients a 2-fold VTE risk per factor VIII increase of 20% was observed; this association was still present but attenuated in older patients

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