Bhatia, Ajay Tumor necrosis factor (TNF) can paradoxically increase on etanercept treatment, occasionally contributing to TNF-mediated disease. [electronic resource] - The Journal of rheumatology Feb 2007 - 447-9; author reply 449-50 p. digital Publication Type: Letter; Comment ISSN: 0315-162X Subjects--Topical Terms: Antirheumatic Agents--adverse effectsContraindicationsEtanerceptHumansImmunoglobulin G--adverse effectsPsoriasis--chemically inducedReceptors, Tumor Necrosis Factor--immunologySignal TransductionTumor Necrosis Factor-alpha--blood