Befiradol (18F)

This article discusses the use of Befiradol (18F), also known as [18F]F13640, in clinical trials to investigate the pathophysiology of cluster headaches. The study aims to evaluate brain activity, perfusion, and functional connectivity in patients with episodic cluster headaches using advanced imaging techniques like PET-MRI.

Table of Contents

What is BEFIRADOL (18F)?

BEFIRADOL (18F) is an investigational drug being studied for its potential in understanding cluster headaches, a type of nervous system disease. This substance is also known by several other names, including [18F]-NLX-112, [18F]-F13640, and BEFIRADOL F-18.[1] It’s important to note that BEFIRADOL (18F) is not a treatment for cluster headaches, but rather a tool used in research to help scientists better understand this painful condition.

Purpose of the Study

The main goal of this study is to explore the underlying mechanisms of cluster headaches using BEFIRADOL (18F) in combination with advanced imaging techniques. Researchers aim to compare how this substance interacts with the brain during active headache periods and pain-free periods.[1] This comparison could provide valuable insights into why and how cluster headaches occur.

How BEFIRADOL (18F) Works

BEFIRADOL (18F) is designed to interact with specific receptors in the brain called 5-HT1A receptors. These receptors are involved in various brain functions, including pain perception. By using this substance, researchers can visualize and measure the activity of these receptors during different stages of cluster headaches.[1] This information could help explain why some people experience these intense headaches and potentially lead to better treatments in the future.

Medical Condition: Cluster Headaches

Cluster headaches, also known as AVF (Algie Vasculaire de la Face) in French, are a type of nervous system disease. They are characterized by severe, recurring pain on one side of the head, often described as one of the most painful conditions a person can experience. These headaches typically occur in cycles or “clusters,” hence the name.[1]

Study Design

The study is designed as an experimental, prospective, single-center, open-label trial. Participants will undergo two PET-MRI scans:

  1. During a cluster headache period
  2. During a pain-free remission period

During the cluster headache period, researchers will attempt to capture data before, during, and after a headache attack. To relieve the patient’s pain during the scan, a medication called sumatriptan will be injected.[1]

Eligibility Criteria

The study has specific criteria for who can participate. Some key inclusion criteria are:

  • Male patients
  • Age between 20 and 45 years
  • Experiencing episodic cluster headaches
  • Headache attacks occurring between 11:00 AM and 9:00 PM
  • No psychiatric or neurological history other than cluster headaches

There are also several exclusion criteria, such as substance dependence, participation in other medical studies, and certain medical conditions that could interfere with the imaging procedures.[1]

Potential Benefits

While this study does not offer direct treatment for cluster headaches, it has the potential to greatly advance our understanding of this condition. By comparing brain activity and receptor density during headache and headache-free periods, researchers hope to uncover new insights into the mechanisms behind cluster headaches. This knowledge could potentially lead to the development of more effective treatments in the future, bringing hope to those who suffer from this debilitating condition.[1]

Aspect Details
Study Drug Befiradol (18F) / [18F]F13640
Condition Studied Episodic Cluster Headache
Main Objective Assess differences in brain activity during active and inactive periods
Imaging Techniques PET-MRI
Key Measurements 5-HT1A receptor density, brain perfusion, functional connectivity
Participant Profile Males, 20-45 years, 50-110 kg, specific headache patterns
Study Design Experimental, prospective, single-center, open-label
Number of Scans Two (during cluster period and remission period)

Ongoing Clinical Trials on Befiradol (18F)

  • Study on Cluster Headache Using Befiradol (18F) for Patients with Episodic Symptoms

    Recruiting

    2 1 1
    Investigated diseases:
    Investigated drugs:
    France

Glossary

  • Befiradol (18F): A radioactive tracer used in PET imaging to study brain activity and receptor density, specifically targeting 5-HT1A receptors.
  • Cluster Headache (AVF): A type of severe, recurring headache that occurs in cyclical patterns or clusters, often characterized by intense pain on one side of the head.
  • PET-MRI: A combined imaging technique that uses both Positron Emission Tomography (PET) and Magnetic Resonance Imaging (MRI) to provide detailed information about brain structure and function.
  • 5-HT1A receptors: A type of serotonin receptor in the brain that plays a role in various neurological processes and is a target of study in this clinical trial.
  • BOLD signal: Blood Oxygen Level Dependent signal, a measure used in functional MRI to detect changes in brain activity based on blood flow.
  • Functional connectivity: The synchronization of brain activity between different regions, which can be measured using functional MRI techniques.
  • Sumatriptan: A medication used to treat cluster headaches and migraines, administered in this study to relieve patient pain during imaging.
  • Episodic cluster headache: A form of cluster headache where patients experience periods of headaches followed by periods of remission.
  • Cerebral perfusion: The blood flow to various regions of the brain, which can be measured and analyzed using imaging techniques.

References

  1. http://clinicaltrials.eu/trial/study-on-cluster-headache-using-befiradol-18f-for-patients-with-episodic-symptoms/