Tenidap was a COX/5-LOX inhibitor and cytokine-modulating anti-inflammatory drug candidate[1] that was under development by Pfizer as a promising potential treatment for rheumatoid arthritis,[2] but Pfizer halted development after marketing approval was rejected by the FDA in 1996[3] due to liver and kidney toxicity, which was attributed to metabolites of the drug with a thiophene moiety that caused oxidative damage.[4]
References
^Wylie G, Appelboom T, Bolten W, Breedveld FC, Feely J, Leeming MR, et al. (June 1995). "A comparative study of tenidap, a cytokine-modulating anti-rheumatic drug, and diclofenac in rheumatoid arthritis: a 24-week analysis of a 1-year clinical trial". British Journal of Rheumatology. 34 (6): 554–63. doi:10.1093/rheumatology/34.6.554. PMID7543348.