BACKGROUND: The objective of this study was to analyze the influence of the prothrombotic factor V Leiden (FVL) and G20210A prothrombin mutations on the frequency of the first episode of catheter-related deep vein thrombosis (DVT) in a cohort of patients with locally advanced or metastatic breast cancer during continuous venous insult (infusion of 5-fluorouracil-based chemotherapy). PATIENTS AND METHODS: Between January 1999 and February 2001, we retrospectively analyzed the incidence of first DVT in 300 consecutive patients with locally advanced or metastatic breast cancer treated at a single institution with a combination of chemotherapy administered continuously through a totally implanted access port. We identified 25 women (study group) with catheter-related DVT. For each of the 25 patients, we selected 2 women eligible for identical chemotherapy who had similar age, stage of disease, and prognostic features as a control group. The prothrombotic FVL and prothrombin mutation G20210A genotype analyses were performed in all patients. Analyses were performed on blinded samples, and all patients signed a specific informed consent form. A total of 25 cases (with thrombosis) and 50 frequency-matched controls were evaluated for FVL. RESULTS: Five cases and 2 controls were found with the mutation in the FVL, for incidences of 20% (95% CI, 9%-39%) and 4% (95% CI, 1%-14%), respectively. Thus, the frequency of the mutation was significantly higher in the cases than in controls (P = 0.04), and a logistic regression analysis, adjusted by age, yielded an odds ratio of 6.1 (95% CI, 1.1%-34.3%; P = 0.04). Time from start of infusion chemotherapy to thrombosis was not significantly different between those with the mutation (median, 31 days) and without the mutation (median, 43 days; P = 0.6). Only 1 subject (in the case group) was found with the G20210A mutation in the prothrombin gene. CONCLUSION: Factor V Leiden carriers with locally advanced or metastatic breast cancer are at high risk of catheter-related DVT during chemotherapy. Clinicians should be aware of this increased risk, and alternative cytotoxic treatments not requiring continuous infusions should be considered for these patients.
Factor V leiden mutation in patients with breast cancer with a central venous catheter: risk of deep vein thrombosis / G. Curigliano, M. Mandalà, A. Sbanotto, M. Colleoni, G. Ferretti, P. Bucciarelli, G. Peruzzotti, F. de Braud, T. De Pas, G. Spitaleri, E. Pietri, F. Orsi, A. Goldhirsch. - In: SUPPORTIVE CANCER THERAPY. - ISSN 1543-2912. - 3:2(2006), pp. 98-102.
|Titolo:||Factor V leiden mutation in patients with breast cancer with a central venous catheter: risk of deep vein thrombosis|
CURIGLIANO, GIUSEPPE (Corresponding)
|Settore Scientifico Disciplinare:||Settore MED/06 - Oncologia Medica|
|Data di pubblicazione:||2006|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.3816/sct.2006.n.005|
|Appare nelle tipologie:||01 - Articolo su periodico|