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Early piribedil monotherapy of Parkinson's disease: A planned seven‐month report of the REGAIN study

Identifieur interne : 000669 ( Main/Corpus ); précédent : 000668; suivant : 000670

Early piribedil monotherapy of Parkinson's disease: A planned seven‐month report of the REGAIN study

Auteurs : Olivier Rascol ; Bruno Dubois ; Alexandre Castro Caldas ; Stephen Senn ; Susanna Del Signore ; Andrew Lees

Source :

RBID : ISTEX:4978C7624F02F4B0130A6FACC88D4C85DA47167D

English descriptors

Abstract

Piribedil is a D2 dopamine agonist, which has been shown to improve symptoms of Parkinson's disease (PD) when combined with L‐dopa. The objective of this study was to compare the efficacy of piribedil monotherapy to placebo in patients with early PD over a 7‐month period. Four hundred and five early PD patients were randomized (double‐blind) to piribedil (150–300 mg/day) or placebo. L‐dopa open‐label supplementation was permitted. Unified Parkinson Disease Rating Scale part III (UPDRS III) score as the last observation on monotherapy over 7 months was the primary outcome measure. Secondary outcomes were proportion of responders (UPDRS III improvement > 30%), patients remaining on monotherapy after 7 months, UPDRS III subscores, and UPDRS II. UPDRS III improved on piribedil (−4.9 points) versus a worsening on placebo (2.6 points; estimated effect = 7.26 points; 95% CI = 5.38–9.14; P < 0.0001). The proportion of responders was significantly higher for piribedil (42%) than for placebo (14%) (OR = 4.69; 95% CI = 2.82–7.80; P < 0.001). Piribedil significantly improved several UPDRS III subscores. UPDRS II improved on piribedil by −1.2 points, while it deteriorated by 1.5 points on placebo (estimated effect = 2.71; 95% CI = 1.8–3.62; P < 0.0001). The proportion of patients remaining on monotherapy after 7 months was greater in the piribedil group (OR = 3.72; 95% CI = 2.26–6.11; P < 0.001). Safety was consistent with that reported for other dopamine agonists, gastrointestinal side effects being the most common (22% of patients in piribedil group vs. 14% on placebo). Piribedil is effective and safe as early PD therapy. © 2006 Movement Disorder Society

Url:
DOI: 10.1002/mds.21122

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ISTEX:4978C7624F02F4B0130A6FACC88D4C85DA47167D

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<title type="main" xml:lang="en">Early piribedil monotherapy of Parkinson's disease: A planned seven‐month report of the REGAIN study</title>
<title type="short" xml:lang="en">Early Piribedil Monotherapy for PD</title>
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<keyword xml:id="kwd1">piribedil</keyword>
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<sc>L</sc>
‐dopa</keyword>
<keyword xml:id="kwd3">Parkinson's disease</keyword>
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<p>Piribedil is a D
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dopamine agonist, which has been shown to improve symptoms of Parkinson's disease (PD) when combined with
<sc>L</sc>
‐dopa. The objective of this study was to compare the efficacy of piribedil monotherapy to placebo in patients with early PD over a 7‐month period. Four hundred and five early PD patients were randomized (double‐blind) to piribedil (150–300 mg/day) or placebo.
<sc>L</sc>
‐dopa open‐label supplementation was permitted. Unified Parkinson Disease Rating Scale part III (UPDRS III) score as the last observation on monotherapy over 7 months was the primary outcome measure. Secondary outcomes were proportion of responders (UPDRS III improvement > 30%), patients remaining on monotherapy after 7 months, UPDRS III subscores, and UPDRS II. UPDRS III improved on piribedil (−4.9 points) versus a worsening on placebo (2.6 points; estimated effect = 7.26 points; 95% CI = 5.38–9.14;
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< 0.0001). The proportion of responders was significantly higher for piribedil (42%) than for placebo (14%) (OR = 4.69; 95% CI = 2.82–7.80;
<i>P</i>
< 0.001). Piribedil significantly improved several UPDRS III subscores. UPDRS II improved on piribedil by −1.2 points, while it deteriorated by 1.5 points on placebo (estimated effect = 2.71; 95% CI = 1.8–3.62;
<i>P</i>
< 0.0001). The proportion of patients remaining on monotherapy after 7 months was greater in the piribedil group (OR = 3.72; 95% CI = 2.26–6.11;
<i>P</i>
< 0.001). Safety was consistent with that reported for other dopamine agonists, gastrointestinal side effects being the most common (22% of patients in piribedil group vs. 14% on placebo). Piribedil is effective and safe as early PD therapy. © 2006 Movement Disorder Society</p>
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<abstract lang="en">Piribedil is a D2 dopamine agonist, which has been shown to improve symptoms of Parkinson's disease (PD) when combined with L‐dopa. The objective of this study was to compare the efficacy of piribedil monotherapy to placebo in patients with early PD over a 7‐month period. Four hundred and five early PD patients were randomized (double‐blind) to piribedil (150–300 mg/day) or placebo. L‐dopa open‐label supplementation was permitted. Unified Parkinson Disease Rating Scale part III (UPDRS III) score as the last observation on monotherapy over 7 months was the primary outcome measure. Secondary outcomes were proportion of responders (UPDRS III improvement > 30%), patients remaining on monotherapy after 7 months, UPDRS III subscores, and UPDRS II. UPDRS III improved on piribedil (−4.9 points) versus a worsening on placebo (2.6 points; estimated effect = 7.26 points; 95% CI = 5.38–9.14; P < 0.0001). The proportion of responders was significantly higher for piribedil (42%) than for placebo (14%) (OR = 4.69; 95% CI = 2.82–7.80; P < 0.001). Piribedil significantly improved several UPDRS III subscores. UPDRS II improved on piribedil by −1.2 points, while it deteriorated by 1.5 points on placebo (estimated effect = 2.71; 95% CI = 1.8–3.62; P < 0.0001). The proportion of patients remaining on monotherapy after 7 months was greater in the piribedil group (OR = 3.72; 95% CI = 2.26–6.11; P < 0.001). Safety was consistent with that reported for other dopamine agonists, gastrointestinal side effects being the most common (22% of patients in piribedil group vs. 14% on placebo). Piribedil is effective and safe as early PD therapy. © 2006 Movement Disorder Society</abstract>
<subject lang="en">
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<topic>piribedil</topic>
<topic>L‐dopa</topic>
<topic>Parkinson's disease</topic>
<topic>monotherapy</topic>
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<identifier type="ISSN">0885-3185</identifier>
<identifier type="eISSN">1531-8257</identifier>
<identifier type="DOI">10.1002/(ISSN)1531-8257</identifier>
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<date>2006</date>
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