More MS news articles for Feb 2002

Leflunomide, Aventis Pharma

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11816835&dopt=Abstract

Curr Opin Investig Drugs 2001 Feb;2(2):222-30
Kaplan MJ.
University of Michigan Medical Center, Division of Rheumatology, Ann Arbor 48109-1065, USA.

Hoechst Marion Roussel (HMR; now Aventis Pharma) launched leflunomide (HWA-486), an immunomodulator and a disease-modifying antirheumatic drug (DMARD), for the treatment of rheumatoid arthritis (RA) in the US in late 1998 [310118].

By August 2000, the compound had been launched extensively across all of Latin America and in all major European countries [380046].

The compound is also under preclinical investigationfor the prevention of transplant rejection [279727], [304402].

In 1998, HMR filed for approvalfor RA in Europe [279727]. In September 1998, the FDA approved leflunomide for the treatment of active RA in adults and it was launched shortly thereafter [298204], [299258], [310118].

In September 1999, the EU Commission accepted the view of the Committee for Proprietary Medicinal Products, published in May 1999 [326040], [337534], and gave approval for the use of leflunomide in RA in adults [339128].

Lehman Brothers has reported that EU launch was delayed by rare side effects including pancytopenia [354434].

In August 1998, the Arthritis Advisory Committee unanimously recommended that leflunomide be contraindicatedfor pregnancy, and that a pregnancy registry should be established to monitor possible teratogenic effects of the drug [296187].

Kyorin had a licence to develop leflunomide in Japan.

Product approval was scheduled for 1998 [159079], but no development has been reported since 1994.

Preclinical studies in an animal model of experimental allergic encephalomyelitis (EAE) have shown leflunomide to be a powerful immunosuppressant which may have potential in diseases such as multiple sclerosis [187881].

Leflunomide is rapidly processed in vivo to its active metabolite, A-771726 (RS-61980) [202941], [253615].

In 1996, leflunomide was designated as one of HMR's nine top-priority products, serving an unmet medical need and addressing a potential market in excess of US $500 million per year [221118].