RESEARCH PAPER
Year : 2014  |  Volume : 5  |  Issue : 2  |  Page : 100-138

Identification of risk factors for carbamazepine-induced serious mucocutaneous adverse reactions: A case-control study using data from spontaneous adverse drug reaction reports


1 Department of Medical Sciences, Uppsala University, Uppsala, Sweden
2 Uppsala Drug Information Center, Uppsala County Council, Uppsala, Sweden

Correspondence Address:
Ilma Bertulyte
Clinical Pharmacology, Entrance 61, 3rd floor, Uppsala University Hospital, 751 85 Uppsala
Sweden
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0976-500X.130051

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Objectives: To identify risk factors other than genetic for severe carbamazepine-induced mucocutaneous reactions, that is, SJS, TEN, and exfoliative dermatitis (ED). Materials and Methods: We did a case-control study using data from the Swedish national database of spontaneously reported adverse drug reactions (ADRs). We selected all patients who had been reported from January 1, 1965 to March 31, 2010 as having experienced SJS (n = 78), TEN (n = 6), or ED (n = 8), and assessed as at least possibly related to carbamazepine. We also included diagnoses possibly representative of early signs of these serious conditions, that is, erythema multiforme (EM, n = 34) and scaly rash (n = 13). We compared data on demographics, drug treatment, and clinical features for these patients (cases, n = 139) with those from patients who had experienced any other type of ADR from carbamazepine during the same time period (controls, n = 887). Results: After adjustment for multiple comparisons, alcohol abuse was statistically significantly more common among cases than controls (34.5% vs 8.7%, odds ratio 5.5 [95% confidence interval 3.6-8.4], P = 3.14 × 10 -14 ). The same was seen for SJS and EM individually. Conclusion: Alcohol abuse is a possible risk factor for serious carbamazepine-induced mucocutaneous reactions.


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