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Health-related quality-of-life improvements in CIDP with immune globulin IV 10%: the ICE Study.

Author(s): Merkies IS, Bril V, Dalakas MC, Deng C, Donofrio P, Hanna K, Hartung HP, Hughes RA, Latov N, van Doorn PA, ICE Study Group

Affiliation(s): Spaarne Hospital Hoofddorp, Spaarnepoort 1, 2134 TM Hoofddorp, The Netherlands. imerkies@spaarneziekenhuis.nl

Publication date & source: 2009-04-14, Neurology., 72(15):1337-44.

Publication type: Randomized Controlled Trial

BACKGROUND: Chronic inflammatory demyelinating polyradiculoneuropathy trials have demonstrated the efficacy of IV immunoglobulin vs placebo. However, these trails have not addressed the long-term impact on health-related quality of life (HRQoL). METHODS: One hundred seventeen patients in a randomized, double-blind, response-conditional crossover trial received immune globulin IV, 10% caprylate/chromatography purified (IGIV-C [Gamunex(R)]), or placebo every 3 weeks for up to 24 weeks in the first period (FP). Participants whose inflammatory neuropathy cause and treatment disability score did not improve by >/=1 point received alternate treatment in a 24-week crossover period (CP). In either period, participants who improved and completed treatment were eligible to be randomly reassigned to a blinded 24-week extension phase (EP). HRQoL analyses were conducted using the Short Form-36(R) (SF-36) and the Rotterdam Handicap Scale (RHS). RESULTS: In the FP, greater improvements in both SF-36 physical and mental component scores were observed with IGIV-C vs placebo, with a significant improvement in the physical component score (difference 4.4 points; 95% confidence interval [CI] 0.7-8.0). Improvements in all SF-36 domains favored IGIV-C vs placebo, with physical functioning, role-physical, social functioning, and mental health reaching significance. Participants receiving IGIV-C experienced a larger improvement in RHS vs those receiving placebo (difference 3.4 points; 95% CI 1.4-5.5; p = 0.001). In the CP, similar general trends were observed. In the EP, mean SF-36 improvements were generally improved or maintained in participants who continued IGIV-C therapy; however, worsening was observed in participants re-randomized to placebo. CONCLUSIONS: Long-term therapy with immune globulin IV, 10% caprylate/chromatography purified, improves and maintains health-related quality of life in chronic inflammatory demyelinating polyradiculoneuropathy.

Page last updated: 2009-10-20

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