| Title | Genetically determined susceptibility to COX-2 inhibitors - a report of exaggerated responders to diclofenac 3% gel in the treatment of actinic keratoses. | | Author(s) | Patel MJ, Ulrich C, Forschner T | | Institution | Department of Dermatology, Charité, Skin Cancer Centre Charité, University Hospital of Berlin, Berlin, Germany. | | Source | Br J Dermatol 2007 May.:57-61. | | Abstract | Diclofenac 3% gel is an effective treatment for actinic keratoses (AKs) and is reported to be generally well tolerated with only mild local reactions. However, there is a subset of patients that seem to be susceptible to developing severe local reactions following application of diclofenac 3% gel. Although some of these reactions can be explained as being allergic contact dermatitis and/or photoallergic contact dermatitis, others cannot. We report a series of 10 patients who all developed severe local reactions following application of diclofenac 3% gel, despite negative diclofenac patch testing. This raises the question as to whether there is a subset of patients with skin cancer or AK lesions that are highly/more susceptible to local reactions caused by cyclo-oxygenase-2 (COX-2) inhibitors and peroxisome proliferator-activated receptor (PPAR) agonists? We speculate that underlying molecular differences exist in these patients that make the skin more susceptible to COX-2 inhibitors. | | Language | eng | | Pub Type(s) | Journal Article
| | PubMed ID | 17488409 |
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