JOURNAL ARTICLE

Impact of carbidopa-levodopa enteral suspension on quality of life and activities of daily living in patients with advanced Parkinson's disease: Results from a pooled meta-analysis

David G Standaert, Vardhaman Patel, Sonya J Snedecor, Sandeep Thakkar, Yash J Jalundhwala, Pavnit Kukreja, David Kratochvil, Yanjun Bao, Rajesh Pahwa
Parkinsonism & related Disorders 2021 March 23, 86: 52-57
33857722

INTRODUCTION: To estimate the impact of carbidopa/levodopa enteral suspension (CLES) on key patient-centered outcomes in patients with advanced Parkinson's disease (PD).

METHODS: A comprehensive literature review identified relevant studies, from which data were meta-analyzed over 3-month intervals up to 24 months. Patient-centered outcomes of interest included mean (95% CI) changes from baseline (Δ) in quality of life (QoL), measured using PD-specific (PDQ-8, PDQ-39) and generic (EQ-5D) instruments; activities of daily living (ADL), measured in On and Off states using UPDRS Part II; and motor symptoms (i.e., Off time/day and motor examination [measured in On and Off states using UPDRS Part III]).

RESULTS: The pooled meta-analysis included data from 26 studies evaluating 1556 patients on CLES. At 3 months, all outcomes showed significant improvement: QoL (ΔPDQ-39 = -10.26 [-11.54, -8.97], ΔEQ-5DVAS  = 15.42 [12.58, 18.26]); ADL (ΔUPDRS IION  = -4.32 [-5.63, -3.01]); motor symptoms (ΔOff time hours/day = -3.48 [-4.15, -2.82], ΔUPDRS IIION  = -6.20 [-9.88, -2.51]). At 24 months, there were statistically significant mean improvements in QoL (ΔPDQ-39 = -7.74 [-12.40, -3.07], ΔEQ-5DVAS  = 11.18 [6.90, 15.45]) and ADL (ΔUPDRS IIOFF  = -3.88 [-5.34, -2.42]), and Off time (-4.21 [-5.16, -3.26] hours/day).

CONCLUSIONS: Impact of CLES on significantly reducing Off time/day was observed to be rapid and durable (i.e., remained consistent across 24 months). Most QoL and ADL measures showed a consistent pattern of improvement with initiation of treatment and remained significantly improved from baseline at 24 months.

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