tolcapone
/ Generic mfg.
- LARVOL DELTA
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February 20, 2026
Efficacy of MAO-B and COMT inhibitors on quality of life in patients with Parkinson's disease: a Bayesian network meta-analysis.
(PubMed, Front Neurol)
- "Randomized controlled trials evaluating QoL using PDQ-39 or PDQ-8 in patients treated with MAO-B inhibitors (rasagiline, selegiline, safinamide) or COMT inhibitors (entacapone, opicapone, tolcapone) were included. Further well-designed head-to-head studies using standardized QoL measures and extended follow-up are needed to confirm these findings and guide clinical practice. Registered in PROSPERO (CRD420251013028): https://www.crd.york.ac.uk/PROSPERO/view/CRD420251013028."
HEOR • Journal • Retrospective data • Review • CNS Disorders • Movement Disorders • Parkinson's Disease • COMT
January 10, 2026
EFFECTS OF MAO-B AND COMT INHIBITORS ON SLEEP DISTURBANCES IN PARKINSON'S DISEASE: A NETWORK META-ANALYSIS
(ADPD 2026)
- "Inclusion criteria involved (1) patients with PD, (2) intervention/comparator consisting of MAO-B inhibitors (safinamide, rasagiline, or selegiline) and COMT inhibitors (opicapone, entacapone, or tolcapone), and (3) outcomes of improvement in parameters for subjective and objective sleep in randomized controlled trials and cohort studies. Evidence has shown that safinamide is effective in improving objective sleep parameters in patients with PD. However, given the paucity of evidence and controlled, long-term studies, the effects of MAO-B and COMT inhibitors on sleep disturbances remain unclear. More high-quality studies will be needed and should enable clinicians to provide personalized medicine based on sleep profiles."
Retrospective data • CNS Disorders • Movement Disorders • Parkinson's Disease • Sleep Disorder • COMT
January 10, 2026
EFFICACY OF MAO-B AND COMT INHIBITORS ON QUALITY OF LIFE IN PATIENTS WITH PARKINSON'S DISEASE: A BAYESIAN NETWORK META-ANALYSIS
(ADPD 2026)
- "Randomized controlled trials evaluating QoL using PDQ-39 or PDQ- 8 in patients treated with MAO-B inhibitors (rasagiline, selegiline, safinamide) or COMT inhibitors (entacapone, opicapone, tolcapone) were included. This network meta-analysis provides evidence that MAO-B inhibitors, particularly rasagiline and safinamide, may offer broader QoL benefits in patients with PD, especially in NMS such as emotional well-being. These findings support a more symptom-oriented and individualized treatment approach should be provided to patients with PD. Further well-designed head-to-head studies using standardized QoL measures and extended follow-up are needed to confirm these findings and guide clinical practice."
HEOR • Retrospective data • CNS Disorders • Movement Disorders • Parkinson's Disease • COMT
February 09, 2026
Synthesis, Structural Characterization, and In Silico Evaluation of the Salicylidene Schiff Base 4‑{(E)‑[(2,3-Dihydroxyphenyl)methylidene]amino}-2-hydroxybenzoic Acid as a Promising Scaffold for Human Transthyretin Inhibitor.
(PubMed, ACS Omega)
- "Single-crystal X-ray diffraction analysis showed that the compound crystallizes in the triclinic P1̅ space group with two molecules in the asymmetric unit, both adopting a zwitterionic keto form. In silico studies predict high gastrointestinal absorption, low toxicity, and potential activity as a transthyretin (TTR) inhibitor, with binding affinity comparable to that of the drug Tolcapone, suggesting that the synthesized compound may be a promising scaffold for a TTR stabilizer."
Journal
December 04, 2025
A Clinical Trial of Tolcapone in Obsessive Compulsive Disorder
(clinicaltrials.gov)
- P2 | N=85 | Recruiting | Sponsor: University of Chicago | Trial completion date: Jan 2026 ➔ Jun 2026 | Trial primary completion date: Dec 2025 ➔ Jun 2026
Trial completion date • Trial primary completion date • Mood Disorders • Obsessive-Compulsive Disorder • Psychiatry
November 03, 2025
The Parkinson's Disease Drug Tolcapone and Analogues are Potent Glycomimetic Lectin Inhibitors of Pseudomonas aeruginosa LecA.
(PubMed, Angew Chem Int Ed Engl)
- "Motivated by the pressing need for new anti-infective therapies caused by antimicrobial resistance, inhibitors of LecA are under investigation. This work paves the way for a new avenue of research towards innovative anti-infective drugs. In a more general perspective, such small molecules also hold potential to challenge the hegemony of antibodies for lectin inhibition in clinical use."
Journal • CNS Disorders • Movement Disorders • Parkinson's Disease
November 02, 2025
Safety of COMT-inhibitors in parkinson's disease: a phase-IV comparative study on adverse events of Tolcapone, Entacapone and Opicapone.
(PubMed, J Neural Transm (Vienna))
- "Entacapone appears to be the safest long-term COMT-inhibitor, with the lowest risk of both serious and non-serious AEs. A long-term, prospective clinical trial is warranted to overcome retrospective limitations and confirm these findings."
Adverse events • Journal • P4 data • CNS Disorders • Movement Disorders • Parkinson's Disease • COMT
September 23, 2025
Remediation of Impaired Self-Regulation in Patients With Mild TBI
(clinicaltrials.gov)
- P1 | N=55 | Completed | Sponsor: VA Office of Research and Development | Phase classification: P=N/A ➔ P1
Phase classification • CNS Disorders • Vascular Neurology
August 12, 2025
Prioritizing repurposable drugs for Alzheimer's disease using network-based analysis with concurrent assessment of Long QT syndrome risk.
(PubMed, Biotechnol Rep (Amst))
- "This strategy identified promising compounds including acamprosate, tolcapone, sitagliptin, and diazoxide, with potential to mitigate disease pathology. Gene set enrichment analysis was used to computationally assess the compounds' ability to reverse disease-related gene expression signatures."
Journal • Alzheimer's Disease • Cardiovascular • CNS Disorders
August 16, 2025
Digital absorption spectral database of hydroxybenzophenones
(ACS-Fall 2025)
- "Benzophenones are widely used as photosensitizers, synthetic precursors to pharmaceuticals (e.g., tolcapone, fenofibrate) and polymers (polyether-ketones). The absorption spectral data can be viewed and downloaded at no cost at the website http://www.photochemcad.com. The availability of the digital spectral data enables calculations of the sun protecting factor (SPF), which should facilitate evaluation of hydroxybenzophenones as ultraviolet protecting agents."
August 06, 2025
Differentiating the solution structures and stability of transthyretin tetramer complexed with tolcapone and tafamidis using SEC-SWAXS and NMR.
(PubMed, J Appl Crystallogr)
- "Additionally, under a reduced TTR-drug mixing ratio of 1:1, which targets only one T4 site, tafamidis more effectively stabilizes the TTR tetrameric conformation at 8 M urea, a difference attributed to its higher affinity for the first T4 site. These results illustrate an effective strategy for investigating protein-drug interactions by examining the solution conformations of protein-drug complexes under physiological conditions, providing structural hints to the design of therapeutic agents targeting TTR."
Journal
July 29, 2025
The Seminal Role of the Proinflammatory Cytokine IL-1β and Its Signaling Cascade in Glioblastoma Pathogenesis and the Therapeutic Effect of Interleukin-1β Receptor Antagonist (IL-1RA) and Tolcapone.
(PubMed, Int J Mol Sci)
- "In contrast, IL-1RA and Tolcapone inhibited this proliferation and the expression of these mRNAs and proteins, inhibiting autophagy by downregulating these autophagy proteins and inducing apoptosis by upregulating the expression of pro-apoptotic proteins like caspase-8 and caspase-3. IL-1β and its receptor can be targeted for successful anticancer therapy, as shown here with the use of IL-1RA and/or Tolcapone."
Journal • Brain Cancer • Glioblastoma • Oncology • Solid Tumor • CASP3 • CASP8 • CTSB • GFAP • IL1B • IL1R1 • IL6 • MYD88 • TNFA
July 29, 2025
Enzyme inhibitory activity of marine alkaloid aaptamines for neurodegenerative diseases: an in silico study.
(PubMed, R Soc Open Sci)
- "The top binding complexes (A12@MAOB, A24@COMT and A27@AChE) are simultaneously studied by molecular dynamics in water for 500 ns time-scale and compared with the references such as safinamide (SAG), tolcapone (TOL) or donepezil (DON). The van der Waals interactions contribute more strongly to enzyme binding than the electrostatic energy. The study results suggest that A27 (lowest binding energy, -170.42 ± 14.24 kJ mol-1) is the most prominent aaptamine candidate for the treatment of NDs."
Journal • CNS Disorders • Pain • COMT
June 26, 2025
Exploring Potential Causal Links: How Parkinson's Disease Brain Damage Impacts Liver Health-A Mendelian Randomization and Transcriptomic Study.
(PubMed, J Inflamm Res)
- "Interestingly, the anti-PD drug, tolcapone, has notable therapeutic effects but also negatively affects specific genes, contributing to liver damage in patients with PD...Furthermore, the impact of PD treatment drugs on liver function was also evaluated. These findings provide important insights for the development of future PD treatment strategies, and further clinical research is needed to validate and optimize clinical interventions to maximize treatment efficacy and minimize side effects in patients with PD."
Journal • CNS Disorders • Hepatology • Inflammation • Movement Disorders • Parkinson's Disease • Vascular Neurology
June 16, 2025
Effects of COMT suppression in a randomized trial on the neural correlates of inhibitory processing among people with Alcohol Use Disorder.
(PubMed, Biol Psychiatry Cogn Neurosci Neuroimaging)
- "Tolcapone increased activation of cortical areas implicated in inhibitory control. The associations between increased iFG activation and connectivity, improved inhibitory control, and reduced drinking suggest that pharmacological interventions that increase cortical dopamine may rescue dysregulated inhibitory control among people with AUD."
Journal • Addiction (Opioid and Alcohol) • COMT
June 09, 2025
Gait Analysis in Neurological Disease
(clinicaltrials.gov)
- P=N/A | N=120 | Recruiting | Sponsor: Beth Israel Deaconess Medical Center | Trial completion date: Jun 2025 ➔ Jun 2026 | Trial primary completion date: Jun 2025 ➔ Jun 2026
Trial completion date • Trial primary completion date • CNS Disorders • Genetic Disorders • Huntington's Disease • Movement Disorders • Multiple System Atrophy • Parkinson's Disease • Progressive Supranuclear Palsy
June 09, 2025
Type A asparagine synthetase in the zoonotic Cryptosporidium parvum (CpAsnA): Biochemical features and potential as a novel therapeutic target.
(PubMed, Int J Parasitol Drugs Drug Resist)
- "Four of the 31 TSA hits exhibited lower micromolar activity against CpAsnA enzyme activity, including XD14, SB225002, histone acetyltransferase inhibitor II (HATi-II) and tolcapone. Among the four CpAsnA inhibitors, three displayed lower micromolar in vitro efficacy against the growth of C. parvum in vitro with satisfactory selectivity indices as primary antiparasitic hits. Our data suggest that CpAsnA merits further investigation as a potential drug target in the parasite."
Journal • ASNS
June 04, 2025
A Clinical Trial of Tolcapone in Obsessive Compulsive Disorder
(clinicaltrials.gov)
- P2 | N=85 | Recruiting | Sponsor: University of Chicago | Trial completion date: Jul 2025 ➔ Jan 2026 | Trial primary completion date: Jun 2025 ➔ Dec 2025
Trial completion date • Trial primary completion date • Mood Disorders • Obsessive-Compulsive Disorder • Psychiatry
November 16, 2024
Clinical pharmacokinetics of levodopa and relevant add-on therapies for Parkinson's disease.
(PubMed, Expert Opin Drug Metab Toxicol)
- "Opicapone induced higher levodopa plasma levels compared with the ones following application of levodopa/carbidopa alone or combined with entacapone or tolcapone. Co-administration of opicapone with its once daily intake regimen may support the efficacy of subcutaneous and intrajejunal levodopa infusions."
Journal • PK/PD data • Review • CNS Disorders • Movement Disorders • Parkinson's Disease • COMT
November 14, 2024
Microbiome Derived Metabolism and Pharmacokinetics
(clinicaltrials.gov)
- P1 | N=14 | Recruiting | Sponsor: Rutgers, The State University of New Jersey | Trial completion date: Dec 2024 ➔ Dec 2025 | Trial primary completion date: Jun 2024 ➔ Dec 2025
Trial completion date • Trial primary completion date • Infectious Disease
October 23, 2024
Sleep deprivation-induced memory impairment: exploring potential interventions.
(PubMed, Front Psychiatry)
- "The review discusses various interventions, ranging from pharmaceutical compounds like donepezil, memantine, and tolcapone, to innovative physical therapy techniques such as transcranial magnetic stimulation (TMS), deep brain stimulation (DBS), and transcranial direct current stimulation (tDCS). Additionally, the emerging role of the gut-brain axis in sleep deprivation-induced memory impairment is examined, shedding light on the complex interplay between gut microbiota and cognitive functions. This comprehensive review explores the multifaceted relationship between sleep deprivation and memory impairment, delving into the neurobiological mechanisms underlying these processes and examining potential interventions."
Journal • Alzheimer's Disease • CNS Disorders
October 07, 2024
Discovery of a Potent, Selective, and Blood-Brain Barrier Permeable Non-nitrocatechol Inhibitor of Catechol-O-methyltransferase.
(PubMed, J Med Chem)
- "A new library of non-nitrocatechol compounds (HetCAMs) was developed and their efficacy was compared to tolcapone, a standard COMT inhibitor for PD...Additionally, compound 9 is predicted to cross the blood-brain barrier (BBB) by passive diffusion and chelate divalent metals like Fe(II) and Cu(II). The results demonstrate the potential of this rational drug design strategy for developing new CNS-active drug candidates, offering symptom relief via COMT inhibition that can provide a long-term, disease-modifying outcome (chelation of divalent metals) in PD."
Journal • COMT
August 09, 2024
Opicapone real-world experience in early motor fluctuations: 3-months analysis of the REONPARK study.
(MDS Congress 2024)
- "Available iCOMT include opicapone, entacapone and tolcapone. Opicapone demonstrated effective control of motor symptoms and good tolerability in PD patients with EMF in routine clinical practice after 3 months."
Clinical • Real-world • Real-world evidence • CNS Disorders • Parkinson's Disease • COMT
August 09, 2024
Opicapone Reduces Homocysteine Levels in Patients with Parkinson's Disease Treated with Levodopa Gel Infusion
(MDS Congress 2024)
- "We have previously proved that add-on treatment with COMT inhibitor tolcapone reduced LCIG/CLES daily dose and decreased HCY levels [1]. Opicapone might have the potential to reduce HCY plasmatic levels in patients with advanced PD treated by LCIG/CLES, probably by decreased peripheral conversion of levodopa to 3-O-methyldopa and, thus, also possibility to reduce the daily dose of LCIG/CLES. The change in homocysteine levels (in μmol/l)"
Clinical • CNS Disorders • Parkinson's Disease • COMT
September 24, 2024
Drug Discovery and Screening Tool Development for Tauopathies by Focusing on Pathogenic Tau Repeat 3 Oligomers.
(PubMed, Angew Chem Int Ed Engl)
- "Through screening, tolcapone was found to possess therapeutic efficacy against pathological tau aggregates in PS19 transgenic mice. This screening platform provides a valuable avenue for identifying compounds that selectively interact with peptides implicated in the progression of tauopathies."
Journal • Alzheimer's Disease • CNS Disorders • Cognitive Disorders
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