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  • Title: Voriconazole exposure and geographic location are independent risk factors for squamous cell carcinoma of the skin among lung transplant recipients.
    Author: Vadnerkar A, Nguyen MH, Mitsani D, Crespo M, Pilewski J, Toyoda Y, Bermudez C, Kwak EJ, Silveira FP, Clancy CJ.
    Journal: J Heart Lung Transplant; 2010 Nov; 29(11):1240-4. PubMed ID: 20591690.
    Abstract:
    BACKGROUND: Skin cancer, in particular squamous cell carcinoma (SCC), is the most common malignancy after solid-organ transplantation. SCC has been reported in immunosuppressed patients receiving voriconazole, but the agent has not been shown to be a risk factor. Universal voriconazole prophylaxis and alemtuzumab induction are standard in our lung transplant program. METHODS: We performed a retrospective, case-control study (matched 1:3) among lung transplant recipients at our center from 2003 to 2008. RESULTS: SCC was diagnosed in 3.1% (17 of 543) of patients at a median follow-up of 36 months. Median time to development of SCC was 19 months post-transplant. Risk factors for SCC by univariate analysis included older age (p = 0.02), residence in locations with high levels of sun exposure (p = 0.0001), single-lung transplant (p = 0.02) and duration (p = 0.03) and cumulative dose (p = 0.03) of voriconazole. Duration of voriconazole (hazard ratio [HR] = 2.1; p = 0.04) and residence in locations with high sun exposure (HR = 3.8; p = 0.0004) were independent risk factors by multivariate analysis. SCC lesions were located on the head and neck in 94% of cases, and 53% had multiple lesions. All patients were treated with surgery. At least one independent lesion developed subsequently in 47% of patients. Local spread and distant metastases each occurred in 7% of cases. There were no deaths among the cases. CONCLUSIONS: Voriconazole exposure is a risk factor for SCC after lung transplantation, particularly among older patients living in areas with high sun exposure. Voriconazole should be used cautiously in these patients.
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