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  • Title: Riluzole therapy for motor neurone disease: an early Australian experience (1996-2002).
    Author: Zoing MC, Burke D, Pamphlett R, Kiernan MC.
    Journal: J Clin Neurosci; 2006 Jan; 13(1):78-83. PubMed ID: 16410201.
    Abstract:
    Riluzole is the only therapy proven in clinical trials to prolong survival in patients with motor neurone disease (MND). Prior to its listing by the Australian Pharmaceutical Benefits Advisory Scheme in June 2003, the aim of the present study was to provide Australian patients with MND early access to riluzole and to expand the safety profile data of this therapy. Patients with MND were referred to the programme by neurologists covering the Sydney metropolitan region. To be eligible to receive riluzole, patients had to be aged between 18 and 75 years and have probable or definite MND based on El Escorial criteria, with a disease duration of less than 5 years and a vital capacity greater than 60% before study entry. Patients were prescribed riluzole 50 mg twice daily. Safety data were collected through documentation of adverse events by clinical history in combination with regular laboratory screening. Full blood count, haematocrit, differential white cell counts and serum liver transaminase levels were obtained monthly for 3 months, and then at each 3-monthly visit for 1 year. In total, 25 patients with MND (17 male, 8 female; age range 40-74 years; mean age 59 years) were commenced on riluzole. Of these, 28% had definite MND and the remaining 72% were diagnosed as probable MND, with the majority (84%) having limb-onset MND. At 12 months, 68% of patients continued on riluzole, 16% had died from their disease and 16% ceased riluzole because of side-effects or other reasons, largely disenchantment owing to a perceived lack of efficacy. Haematological and biochemical assays showed no significant alteration during the initial 12-month period. Long-term survival data for patients in the present series suggest a greater benefit for patients who commenced riluzole early in the course of their illness. In conclusion, riluzole was generally tolerated well by Australian patients with MND. Of the few patients who experienced side-effects attributed to riluzole, all were reversible. Issues related to patient perceptions of efficacy highlight the need for patients and treating physicians to maintain realistic expectations of riluzole therapy.
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