Evidence map›Paper›PMID 34316616›Full record

ArticleClinical parkinsonism & related disorders2020

A post hoc comparison of levodopa-carbidopa intestinal gel daytime monotherapy vs polytherapy safety and efficacy in patients with advanced Parkinson's disease: Results from 6 phase 3/3b open-label studies.

James T Boyd, Cindy Zadikoff, Janet A Benesh, Jorge Zamudio, Weining Z Robieson, Pavnit Kukreja, Masayuki Yokoyama, Mustafa S Siddiqui

Open access · goldAbstract read
In one paragraph

Article in Clinical parkinsonism & related disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 36% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 3 citations in OpenAlex.

  1. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 2 countries.

James T BoydDepartment of Neurological Sciences, University of Vermont Larner College of Medicine, 1 South Prospect Street, UHC - Arnold 2, Burlington, VT 05401, USA.
Cindy ZadikoffAbbVie, Inc., 1 Waukegan Rd, North Chicago, IL 60064, USA.
Janet A BeneshAbbVie, Inc., 1 Waukegan Rd, North Chicago, IL 60064, USA.
Jorge ZamudioAbbVie, Inc., 1 Waukegan Rd, North Chicago, IL 60064, USA.
Weining Z RobiesonAbbVie, Inc., 1 Waukegan Rd, North Chicago, IL 60064, USA.
Pavnit KukrejaAbbVie, Inc., 1 Waukegan Rd, North Chicago, IL 60064, USA.
Masayuki YokoyamaAbbVie, Inc., 3-1-21 Shibaura, Minato-ku, Tokyo 108-6302, Japan.
Mustafa S SiddiquiDepartment of Neurology, Wake Forest School of Medicine, 475 Vine Street, Winston-Salem, NC 27101, USA.
AbbVie (United States) · USABB (Japan) · JPUniversity of Vermont · USWake Forest University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionAs Parkinson's disease (PD) progresses, the number/frequency of PD medications tend to increase, which is correlated with decreased patient compliance and suboptimal control of PD symptoms. We investigated efficacy and safety of levodopa-carbidopa intestinal gel (LCIG) daytime monotherapy (with or without nighttime oral levodopa-carbidopa) compared with polytherapy (LCIG with ≥1 adjunctive PD therapy) in advanced PD patients.

methodsThis post hoc descriptive study compared LCIG stable daytime monotherapy with LCIG stable polytherapy in all six phase 3/3b open-label studies from both US and international sites; because of study design variability, pooling data for comparison was not appropriate. Efficacy assessments included PD diary data (mean change from baseline in "Off" time and "On" time with or without troublesome dyskinesia), mean Unified PD Rating Scale scores (Parts II and III), and 39-item Parkinson's Disease Questionnaire (PDQ-39) summary index. Adverse events were also assessed.

resultsOverall, LCIG daytime monotherapy and polytherapy demonstrated similar efficacy/safety profiles in advanced PD patients, regardless of treatment duration or population. LCIG monotherapy vs. polytherapy groups experienced similar mean decreases in "Off" time (4.6 vs. 4.1 h/day) and similar increases in "On" time without troublesome dyskinesia (4.6 vs. 4.1 h/day). In most studies, PDQ-39 summary index scores were reduced from baseline by ≥5 points, regardless of patient population or study duration. Adverse events not related to the procedure/device were similar in both groups.

conclusionOur data suggest that, for appropriate patients, LCIG monotherapy can provide a more simplified treatment option with similar efficacy and safety.

Indexed as

LCIGLevodopaMonotherapyParkinson's disease

Identifiers

PMID34316616
PMCPMC8302193
OpenAlexW2996744009

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.