SynthesisArquivos de neuro-psiquiatria2025
Efficacy and safety of glucagon-like peptide 1 agonists for Parkinson's disease: a systematic review and meta-analysis.
Synthesis in Arquivos de neuro-psiquiatria, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Efficacy and safety of GLP-1 receptor agonists in Parkinson's disease: a systematic review and meta-analysis of randomized clinical trials.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026Pooled it
- Beyond Glycemic Control: GLP-1RA-Based Therapies and Emerging Targets Beyond the Metabolic Axis.Journal of clinical medicine · 2026Review
- Efficacy and safety of glucagon-like peptide-1 receptor agonists in Parkinson's disease: a systematic review and meta-analysis of randomized placebo-controlled clinical trials.Therapeutic advances in neurological disorders · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundRecent research on Parkinson's disease (PD) therapy has highlighted glucagon-like peptide 1 (GLP-1) agonists as potential therapeutic agents. However, recent randomized controlled trials (RCTs) have shown mixed results regarding the use of this medication.
objectiveTo perform a meta-analysis comparing GLP-1 agonists with placebo or standard PD treatment in adult PD patients.
methodsWe systematically searched the PubMed, Embase and Cochrane Central databases. The efficacy outcomes were assessed through the Movement Disorder Society Unified Parkinson Disease Rating Scale (MDS-UPDRS) and the 39-item Parkinson's Disease Questionnaire (PDQ-39). We also assessed adverse events. Dichotomous data were compared using the risk ratio (RR), and continuous endpoints were pooled using the mean difference (MD).
resultsWe included 4 RCTs, with a total of 514 patients. In every study, the Hoehn and Yahr stage was < 3. The pooled analysis demonstrated that the use of GLP-1 agonists was not associated with an improvement in the scores on parts I, II, III, and IV of the MDS-UPDRS at 6 and 12 months of follow-up. Neither did quality of life (PDQ-39) show significant differences among the groups, and a higher risk of gastrointestinal adverse events and weight loss was observed with the use of GLP-1 agonists. A subgroup analysis further confirmed the lack of clinical benefits of the intervention regarding all of these efficacy outcomes, and the intervention also significantly reduced result heterogeneity.
conclusionIn 1 year, GLP-1 agonists failed to improve motor and non-motor features of PD. Additional high-quality studies are needed to draw more robust conclusions about this treatment.
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Identifiers
What Socratic holds
Registered trials
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 Socratic graph.