Etretinate (trade name Tegison) is a medication developed by Hoffmann–La Roche that was approved by the FDA in 1986 to treat severe psoriasis. It was subsequently removed from the Canadian market in 1996 and the United States market in 1998 due to the high risk of birth defects. It remains on the market in Japan.
Etretinate is an aromatic retinoid, and therefore highly lipophilic. It is stored and released from adipose tissue, so its effects can continue long after dosage stops. It is detectable in the plasma for up to three years following therapy.
The drug was approved by the FDA in 1986 to treat severe psoriasis. It was subsequently removed from the Canadian market in 1996 and the United States market in 1998 due to the high risk of birth defects.
In Japan, the drug remains on market branded Tigason. People may not donate blood for two years after ceasing to use the medication.
^Qureshi, ZP; Seoane-Vazquez, E; Rodriguez-Monguio, R; Stevenson, KB; Szeinbach, SL (July 2011). "Market withdrawal of new molecular entities approved in the United States from 1980 to 2009.". Pharmacoepidemiology and drug safety20 (7): 772–7. doi:10.1002/pds.2155. PMID21574210.
^Fung, M.; Thornton, A.; Mybeck, K.; Wu, J. H.-h.; Hornbuckle, K.; Muniz, E. (1 January 2001). "Evaluation of the Characteristics of Safety Withdrawal of Prescription Drugs from Worldwide Pharmaceutical Markets-1960 to 1999". Therapeutic Innovation & Regulatory Science35 (1): 293–317. doi:10.1177/009286150103500134.