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Latest Clinical Trial in Meta-analysis of Placebo-controlled Safinamide & Entacapone as Add-on Therapy to Levodopa -Treatment of Parkinson’s Disease
  • USA - English


News provided by

Touch Medical Media

May 29, 2015, 03:00 ET

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Safinamide recently received a European Committee for Medicinal Products for Human Use (CHMP) positive opinion for the treatment of adult patients with idiopathic PD.

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(PRWEB UK) 29 May 2015 -- Abstract: Chronic levodopa (L-dopa) treatment of Parkinson’s disease (PD) patients is sooner or later associated with the onset of motor complications, for example wearing off and dyskinesia. PD patients with motor complications usually require the addition of further PD drugs to reduce these L-dopa side effects and enhance its efficacy. Entacapone is an available catechol-O-methyltransferase (COMT) inhibitor, which was extensively investigated as add-on to L-dopa/dopadecarboxylase inhibitor (DDCI) application in PD patients. Safinamide, a water soluble, orally active α-aminoamide derivative, which modulates dopaminergic and glutamatergic neurotransmission with a unique dual mechanism of action, has been studied in two placebo-controlled clinical trials as add-on therapy to L-dopa in fluctuating PD patients. To date, there are no head-to-head clinical trials comparing the efficacy of safinamide and entacapone in the clinic. The aim of this meta-analysis was to determine effect sizes of safinamide and entacapone as add-on treatment to L-dopa in fluctuating PD patients. A systematic search of the literature on entacapone trials up to the end of September 2014 was first conducted on the MEDLINE and EMBASE databases in order to identify appropriate studies. Definition criteria for inclusion were prospective, randomised, placebo controlled and double-blinded trials on the efficacy and safety of entacapone or safinamide in fluctuating L-dopa-treated PD patients. Four studies for entacapone and two trials on safinamide were considered. Data from the safinamide trials were provided by Zambon and therefore ‘safinamide’ was not used as a search term. Safinamide and entacapone treatment was comparable in terms of the main efficacy variables (off time, percentage on time, Unified Parkinson’s Disease Rating Scale). Significant advantages in favour of safinamide were shown in terms of the total incidence of adverse events (AEs) in comparison to placebo, the study discontinuation due to AEs and deaths and in the risk differences of the AEs versus placebo, particularly for nausea, vomiting, diarrhoea, dizziness, urine abnormality and shortness of breath. The odds ratio (OR) of 0.907 for any AE corresponds to an overall AE rate of 68.7 % for safinamide whereas the OR of 2.089 to an overall AE rate of 84.4 % for entacapone.

The signs and symptoms of Parkinson’s disease (PD), a chronic neurodegenerative disorder predominantly characterised by the loss of dopaminergic neurons in the substantia nigra pars compacta, are most effectively treated by levodopa (L-dopa). However, nearly all PD patients experience a fluctuating response to L-dopa sooner or later within the first 5 years of therapy dependent on dosing of L-dopa. End-of-dose wearing off and dykinesias are the most common motor complications associated with L-dopa treatment.1–3 Once they appear, the management of motor complications is often challenging and patients require recurrent drug therapy adjustments to improve fluctuations of movement without exacerbating severe dyskinesia.

To continue reading this peer-reviewed article in full for free please go to : http://www.touchneurology.com/articles/meta-analysis-placebo-controlled-clinical-trials-safinamide-and-entacapone-add-therapy

Note to Editors:
touchNEUROLOGY (a division of Touch Medical Media) provides independent, cutting-edge, peer-reviewed content from world renowned physicians, designed to lead the debate on health and to engage, inform, and support physicians in improving patient outcomes globally.

touchNEUROLOGY.com provides an international platform for peer-reviewed content from industry-leading journals alongside other carefully selected sources and aims to support physicians, clinicians and leading industry professionals in continuously developing their knowledge, effectiveness and productivity within the field of neurology.

Our portfolio of peer-reviewed journals, European Neurological Review and US Neurology comprise of concise review articles which are designed to keep busy physicians up-to-date with the latest developments in their field and serve as a key reference resource for the international neurology community.

http://www.touchneurology.com/

Barney Kent, Touch Medical Media, http://www.touchoncology.com, +44 2071933009, [email protected]

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