A randomized, double-blind, placebo-controlled, delayed start study to assess rasagiline as a disease modifying therapy in Parkinson's disease (the ADAGIO study): rationale, design, and baseline characteristics.
Identifieur interne : 001F83 ( PubMed/Corpus ); précédent : 001F82; suivant : 001F84A randomized, double-blind, placebo-controlled, delayed start study to assess rasagiline as a disease modifying therapy in Parkinson's disease (the ADAGIO study): rationale, design, and baseline characteristics.
Auteurs : C Warren Olanow ; Robert A. Hauser ; Joseph Jankovic ; William Langston ; Anthony Lang ; Werner Poewe ; Eduardo Tolosa ; Fabrizio Stocchi ; Eldad Melamed ; Eli Eyal ; Olivier RascolSource :
- Movement disorders : official journal of the Movement Disorder Society [ 1531-8257 ] ; 2008.
English descriptors
- KwdEn :
- MESH :
- chemical , therapeutic use : Indans, Neuroprotective Agents.
- drug therapy : Parkinson Disease.
- Adult, Aged, Aged, 80 and over, Dose-Response Relationship, Drug, Double-Blind Method, Female, Humans, Male, Middle Aged, Retrospective Studies, Treatment Outcome.
Abstract
A neuroprotective therapy is the single most important unmet medical need in Parkinson's disease. Several promising agents in the laboratory have been tested in the clinic, but none has been established in clinical trials to have a disease modifying effect despite positive results because of potential confounding symptomatic or pharmacologic effects. The delayed start design was developed to try to avoid a symptomatic confound when testing a putative neuroprotective therapy. In this study design, patients are randomly assigned to study drug or placebo in the first phase of the study, and both groups receive the active drug in the second phase. If benefits seen at the end of phase I persist through the end of phase II, they cannot be readily explained by a symptomatic effect (as patients in both groups are receiving the same medication) and benefits in the early start group must relate to the early initiation of the treatment. Although the precise mechanism responsible for such an effect can be debated, positive results in a delayed start study indicate that patients who receive early treatment have a better outcome than those where the treatment is delayed. We are using the delayed start design to assess the potential disease modifying effects of rasagiline in a prospective double blind controlled trial (the ADAGIO study). We here describe the rationale for the study and baseline characteristics of the 1,176 patients who have been enrolled into the trial.
DOI: 10.1002/mds.22218
PubMed: 18932271
Links to Exploration step
pubmed:18932271Le document en format XML
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<term>Double-Blind Method</term>
<term>Female</term>
<term>Humans</term>
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<term>Middle Aged</term>
<term>Neuroprotective Agents (therapeutic use)</term>
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<term>Aged, 80 and over</term>
<term>Dose-Response Relationship, Drug</term>
<term>Double-Blind Method</term>
<term>Female</term>
<term>Humans</term>
<term>Male</term>
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<front><div type="abstract" xml:lang="en">A neuroprotective therapy is the single most important unmet medical need in Parkinson's disease. Several promising agents in the laboratory have been tested in the clinic, but none has been established in clinical trials to have a disease modifying effect despite positive results because of potential confounding symptomatic or pharmacologic effects. The delayed start design was developed to try to avoid a symptomatic confound when testing a putative neuroprotective therapy. In this study design, patients are randomly assigned to study drug or placebo in the first phase of the study, and both groups receive the active drug in the second phase. If benefits seen at the end of phase I persist through the end of phase II, they cannot be readily explained by a symptomatic effect (as patients in both groups are receiving the same medication) and benefits in the early start group must relate to the early initiation of the treatment. Although the precise mechanism responsible for such an effect can be debated, positive results in a delayed start study indicate that patients who receive early treatment have a better outcome than those where the treatment is delayed. We are using the delayed start design to assess the potential disease modifying effects of rasagiline in a prospective double blind controlled trial (the ADAGIO study). We here describe the rationale for the study and baseline characteristics of the 1,176 patients who have been enrolled into the trial.</div>
</front>
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