Trial reportCNS drugs2025
Effect of Naltrexone on Spinal and Supraspinal Pain Mechanisms and Functional Capacity in Women with Fibromyalgia: Exploratory Outcomes from the Randomized Placebo-Controlled FINAL Trial.
Trial report in CNS drugs, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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
5 citing papers in PubMed.
- Efficacy of Low-Dose Naltrexone in Women With Fibromyalgia Syndrome: A 12-Month Randomised, Double-Blind, Placebo-Controlled Single-Centre Clinical Trial (INNOVA Study).European journal of pain (London, England) · 2026Trial
- Pain Mechanisms in Fibromyalgia: An Integrative Narrative Review of Central, Peripheral, Neuroimmune, and Psychobiological Factors.Biomedicines · 2026Review
- Progress in mechanisms and therapy for fibromyalgia.Nature reviews. Rheumatology · 2026Article
- Descending Pain Modulation in Fibromyalgia: A Short Review of Mechanisms and Biomarkers.Diagnostics (Basel, Switzerland) · 2025Review
- Real-World Effectiveness and Tolerability of Low Dose Naltrexone to Treat Chronic Pain: A Retrospective Cohort Study of One Pain Physician's Practice.Journal of pain research · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
Abstract
backgroundThe widespread pain and muscular fatigue characteristics of fibromyalgia are believed to be mediated by central mechanisms. Low-dose naltrexone (LDN) has emerged as a new treatment option for fibromyalgia, possibly modulating central mechanisms via glial or opioid receptors.
methodsIn the randomized, placebo-controlled FINAL trial, 99 women with fibromyalgia were treated with LDN or placebo for 12 weeks. In this secondary analysis, we examined the potential effects of LDN versus placebo on changes from baseline in pain tolerance, temporal summation of pain, and conditioned pain modulation (CPM) in the complete case population (45 versus 47 participants). Measures of muscular fatigue were evaluated using the 30-s chair stand test and a shoulder abduction test.
resultsOf the five examined outcomes, only change in CPM showed a significant between-group difference with greater enhancement following LDN treatment (2.0 kPa; 95% confidence interval (CI) 0.4-3.7 kPa) compared with placebo. Within-group changes in CPM showed an increase of 1.2 kPa (95% CI 0.05-2.4 kPa) in the LDN group and a possible decrease of 0.8 kPa (95% CI - 1.9 to 0.4 kPa) in the placebo group.
conclusionsWe found a significant between-group difference in CPM change in favor of LDN. However, this difference was partly explained by a decrease in CPM in the placebo group. Sensitivity analyses showed no association between changes in CPM and clinical pain improvement, suggesting that the group-difference in CPM is a random finding. STUDY REGISTRATION: ClinicalTrials.gov (NCT0427877; registered on 30 January 2020).
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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.