Trial reportNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2014
A randomized, placebo-controlled study investigating the nicotinic α7 agonist, RG3487, for cognitive deficits in schizophrenia.
Trial report in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 3 of them syntheses 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
37 citing papers in PubMed, 3 syntheses or guidelines pooled it, 80 citations in OpenAlex.
- Cognitive Enhancers in Schizophrenia: A Systematic Review and Meta-Analysis of Alpha-7 Nicotinic Acetylcholine Receptor Agonists for Cognitive Deficits and Negative Symptoms.Frontiers in psychiatry · 2021Pooled it
- Alpha-7 nicotinic agonists for cognitive deficits in neuropsychiatric disorders: A translational meta-analysis of rodent and human studies.Progress in neuro-psychopharmacology & biological psychiatry · 2017Pooled it
- Varenicline for smoking cessation in people with schizophrenia: systematic review and meta-analysis.European archives of psychiatry and clinical neuroscience · 2015Pooled it
- Double blind, two dose, randomized, placebo-controlled, cross-over clinical trial of the positive allosteric modulator at the alpha7 nicotinic cholinergic receptor AVL-3288 in schizophrenia patients.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020Trial
- Evaluation of the Efficacy, Safety, and Tolerability of BI 409306, a Novel Phosphodiesterase 9 Inhibitor, in Cognitive Impairment in Schizophrenia: A Randomized, Double-Blind, Placebo-Controlled, Phase II Trial.Schizophrenia bulletin · 2019Trial
- Pharmacokinetic Limitations on Effects of an Alpha7-Nicotinic Receptor Agonist in Schizophrenia: Randomized Trial with an Extended-Release Formulation.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018Trial
- Task-related fMRI responses to a nicotinic acetylcholine receptor partial agonist in schizophrenia: A randomized trial.Progress in neuro-psychopharmacology & biological psychiatry · 2016Trial
- The α7 Nicotinic Agonist ABT-126 in the Treatment of Cognitive Impairment Associated with Schizophrenia in Nonsmokers: Results from a Randomized Controlled Phase 2b Study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2016Trial
- Novel drug treatments for schizophrenia.Nature reviews. Drug discovery · 2026Review
- Therapeutic Targeting of the α7 Nicotinic Receptor: Challenges and Prospects for Cognitive Improvement in Alzheimer's and Schizophrenia.Basic & clinical pharmacology & toxicology · 2025Review
- Systemic Modulators: Potential Mechanism for the 5-HT System to Mediate Exercise Amelioration in Alzheimer's Disease.Aging and disease · 2024Review
- Hippocampal Availability of the α7 Nicotinic Acetylcholine Receptor in Recent-Onset Psychosis.JAMA network open · 2024Article
- An Update on Treatment of Cognitive Impairment Associated with Schizophrenia.Current topics in behavioral neurosciences · 2023Review
- A narrative review of treatment interventions to improve cognitive performance in schizophrenia, with an emphasis on at-risk and early course stages.Psychiatry research · 2022Review
- α7 nicotinic acetylcholine receptors as therapeutic targets in schizophrenia: Update on animal and clinical studies and strategies for the future.Neuropharmacology · 2020Review
- Synthesis, Pharmacological Characterization, and Structure-Activity Relationships of Noncanonical Selective Agonists for α7 nAChRs.Journal of medicinal chemistry · 2019Article
- Alpha7 Nicotinic Receptors as Therapeutic Targets in Schizophrenia.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2019Review
- Nicotinic Acetylcholine Receptor Agonists for the Treatment of Alzheimer's Dementia: An Update.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2019Review
- Potential Role of Antipsychotic-Galantamine-Memantine Combination in the Treatment of Positive, Cognitive, and Negative Symptoms of Schizophrenia.Molecular neuropsychiatry · 2018Review
- Efficacy of different types of cognitive enhancers for patients with schizophrenia: a meta-analysis.NPJ schizophrenia · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Effective treatments for cognitive impairment associated with schizophrenia (CIAS) remain an unmet need. Nicotinic α7 receptor agonists may be effective in CIAS. This 8-week (week 1, inpatient; weeks 2-8, outpatient), double-blind, randomized study used Measurement And Treatment Research to Improve Cognition in Schizophrenia (MATRICS) guidelines to investigate the nicotinic α7 partial agonist RG3487 (formerly MEM3454) in CIAS; 215 patients with chronic stable schizophrenia received placebo or RG3487 (5, 15, or 50 mg) added to ongoing treatment with risperidone, paliperidone, or aripiprazole. Primary end point was baseline to week 8 change in MATRICS Consensus Cognitive Battery (MCCB) composite t-score. Secondary outcomes were change in MCCB domain and negative symptom assessment (NSA) scores. The study did not allow for evaluation of nonsmokers. Each RG3487 dose was evaluated using a mixed-effects model repeated measures approach. Mean (SD) baseline MCCB composite t-score was 28.3 (12.0). No significant effect on MCCB composite t-scores was observed with RG3487 (adjusted mean difference (SE) vs placebo: 5 mg: 0.11 (1.39); 15 mg: -1.95 (1.39); 50 mg: -1.13 (1.37); p = 0.2-0.9). RG3487 did not improve MCCB domain scores. In a post hoc analysis of patients with moderate negative symptoms, 5 and 50 mg RG3487 vs placebo significantly improved NSA total (-4.45 (p = 0.04) and -4.75 (p = 0.02), respectively) and global (-0.39 (p = 0.04) and -0.55 (p = 0.003), respectively) scores. The MCCB did not lead to higher than expected patient withdrawal. RG3487 was generally well tolerated. In patients with stable schizophrenia, RG3487 did not improve cognitive deficits, as assessed by the MCCB; however, in patients with moderate negative symptoms, a post hoc analysis revealed significant improvement of negative symptoms.
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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.