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NCT Number: NCT06113640

Montelukast in Parkinson Disease

Parkinson's disease (PD) is the second most common neurodegenerative disorder after Alzheimer's disease (AD). Clinical manifestations of PD can vary, but a formal diagnosis relies on the presence of bradykinesia with rigidity and/or rest tremor according to Movement Disorder Society (MDS) criteria for PD. Non-motor symptoms, such as hyposmia, constipation, depression, and rapid eye movement (REM) sleep behavior disorder, are common and can in many cases manifest before classical motor symptoms. In later years, more emphasis has been put on non-motor symptoms, especially in the early stages of PD and which is evident in the proposed prodromal PD criterion by MDS.

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Key information

Conditions

Parkinson Disease Basal Ganglia Diseases Brain Diseases Central Nervous System Diseases Movement Disorders Nervous System Diseases Neurodegenerative Diseases Parkinsonian Disorders Synucleinopathies

Age range

18 year–70 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2 / Phase 3

Primary location

Faculty of Medicine, Mansoura University

Al Mansurah, 35511, Egypt

Location status: Recruiting

Location contact

Mostafa M Bahaa, PhD

CONTACT

[email protected]

0201025538337

About this study

Leukotrienes are along with prostaglandins, lipoxins, and thromboxanes included in a group of long-chain fatty acids known as eicosanoids. They are known to play important parts in the inflammatory response such as leukocyte chemotaxis, vascular leakage, and astrocyte proliferation, and were first described by Bengt Samuelsson and colleagues in 1983. Leukotrienes (LT) are synthesized from free arachidonic acid (AA) by the enzyme 5-lipoxygenase (5-LOX) into LTA4, which is then further metabolized into LTB4, C4, D4, and E4. LTC4, D4, and E4 are grouped by their molecule structure to form the cysteinyl leukotrienes and they mainly activate two receptors, CysLT1 and CysLT2. CysLT1 is a Gq/11 family G-protein-coupled receptor with signaling through phospholipase C and Ca2+ mobilization

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age ≥ 18 years Both male and female will be included Negative pregnancy test and effective contraception. Diagnosed Parkinson's disease patient taking Levodopa

Exclusion criteria

  • Secondary causes of parkinsonism Patients taking anti-inflammatory drugs Atypical parkinsonian syndromes Prior stereotaxic surgery for Parkinson's disease Pregnancy and lactation Suffering from active malignancy Addiction to alcohol and / or drugs Known allergy to the studied medications

Treatment and study plan

Levodopa-Carbidopa

Drug

Carbidopa/levodopa, also known as levocarb and co-careldopa, is the combination of the two medications carbidopa and levodopa. It is primarily used to manage the symptoms of Parkinson's disease

Montelukast

Drug

Montelukast and other CysLT1 antagonists are currently used as an adjuvant therapy for children and adults suffering from asthma. Other indications have been proposed and most evidence exists for the use of montelukast to treat allergic rhinitis, but its use in other inflammatory conditions, such as atherosclerosis and chronic obstructive pulmonary disease, have also been suggested.

Primary outcomes

  1. Change in unified parkison disease rating scale

    Time frame: 12 months

    The Unified Parkinson's Disease Rating Scale (UPDRS) is the most widely applied rating instrument for Parkinson disease (PD). The Total UPDRS score includes 31 items contributing to three subscales: (I) Mentation, Behavior, and Mood; (II) Activities of Daily Living; and (III) Motor Examination

Sponsors and collaborators

Lead sponsor

Mostafa Bahaa

Other

Registry information

Official study title

Clinical Study to Investigate the Possible Efficacy and Safety of Montleukast in Parkinson Disease

Important dates

Study start
2023
Primary completion
2026
Study completion
2026
First posted
Nov 2, 2023
Registry last updated
Mar 13, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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