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Background: Pemetrexed is an antifolate drug approved for maintenance and second-line therapy, and, in combination with cisplatin, for first-line treatment of advanced nonsquamous non-small cell lung cancer. The side-effect profile includes fatigue, hematological and gastrointestinal toxicity, an increase in hepatic enzymes, sensory neuropathy, and pulmonary and cutaneous toxicity in various degrees., Case Report: We present the case of a 58-year-old woman with history of Sharp's syndrome and adenocarcinoma of the lung, who developed toxic epidermal necrolysis after the first cycle of pemetrexed, including erythema, bullae, extensive skin denudation, subsequent systemic inflammation and severe deterioration in general condition. The generalized skin lesions occurred primarily in the previous radiation field and responded to immunosuppressive treatment with prednisone., Conclusion: Although skin toxicity is a well-known side effect of pemetrexed, severe skin reactions after pemetrexed administration are rare. Caution should be applied in cases in which pemetrexed is given subsequent to radiation therapy, especially in patients with pre-existing skin diseases.

Background: Toxic epidermal necrolysis (TEN) is an uncommon but life-threatening adverse drug reaction. Pemetrexed is a multitargeted antifolate. It was first used in combination with cisplatin as a front-line treatment for malignant pleural mesothelioma. The same combination is nowadays approved in the first-line setting for locally advanced or metastatic nonsquamous non-small cell lung cancer (NSCLC)., Patient and Methods: We report the case of a 50-year-old man treated for metastatic NSCLC. Within 5 days after administration of the second cycle of cisplatin and pemetrexed, he developed large blisters, which secondarily became hemorrhagic, and mucosal lesions. The characteristic clinical appearance, the histopathological findings, and the clinical course were decisive for the diagnosis of TEN. Treatment with systemic steroids and intravenous antibiotics as well as topical wound treatment led to resolution and improvement of his general condition., Conclusions: To the best of our knowledge, this is the third case of TEN due to pemetrexed in a patient with NSCLC. Clinicians should be aware of TEN as a rare but potentially fatal disorder requiring hospitalization and multidisciplinary management., (Copyright © 2012 S. Karger AG, Basel.)

Background: Pemetrexed is a multitargeted antifolate initially approved as a single agent for the second-line treatment of locally advanced or metastatic non-small cell lung cancer and more recently in the first-line setting combined with cisplatin. The combination of pemetrexed with carboplatin has been tested in several phase II clinical trials showing interesting antitumour activity with mild toxicity. Supplementation with folic acid and vitamin B12 during treatment with pemetrexed is recommended to reduce potential haematological and gastrointestinal adverse events., Case Report: A patient experienced cutaneous lesions including widespread erythema, epidermal detachment, and skin denudation, associated with deterioration of his general condition after the second cycle of this chemotherapy combination, which was clinically and histologically compatible with toxic epidermal necrolysis (Lyell's syndrome). Treatment with systemic steroids, antihistamines, and antibiotics led to resolution of the skin lesions and improvement of his general condition., Conclusion: To our knowledge, this is the second case reported in the literature of this type of suspected adverse drug reaction associated with a pemetrexed-based chemotherapy combination., (Copyright 2009 S. Karger AG, Basel.)