Binding of Foliglurax to Regions in the Brain in Healthy Participants and in Patients With Parkinson's Disease (PD)

Lundbeck

Status and phase

Terminated

Phase 1

Conditions

Healthy

Parkinson Disease

Treatments

Drug: foliglurax

Study type

Interventional

Funder types

Industry

Identifiers

NCT04175132

18124A

Details and patient eligibility

About

A study to learn how foliglurax binds in regions of the brain

Full description

To study binding of foliglurax to mGlu4 receptors in human brain, up to 9 healthy subjects (Part A) and up to 8 patients with Parkinson's disease (Part B) will be injected with a liquid dose of a radiolabelled tracer that allows measurement of foliglurax binding in the brain to determine to which degree foliglurax binds to regions of the brain.

Enrollment

6 patients

Sex

All

Ages

50 to 70 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

Part A:

Healthy subjects
The subject has a normal structural MRI (sMRI) scan performed in the screening period, as judged by the investigator.
The subject is, in the opinion of the investigator, generally healthy based on the assessment of medical history, physical examination, vital signs, body weight, ECG, and the results of the haematology, clinical chemistry, urinalysis, serology, and other laboratory tests.
The subject can tolerate confined spaces for prolonged periods of time.
The subject is suitable for radial and/or brachial artery blood sampling and cannulation.

Part B:

Patients with Parkinson's disease
The subject has a normal sMRI scan performed in the screening period, as judged by the investigator.
The patient is, in the opinion of the investigator, fit for enrolment in the study based on the assessment of medical history, physical examination, vital signs, body weight, ECG, and the results of the haematology, clinical chemistry, urinalysis, serology, and other laboratory tests.
The patient has been diagnosed with idiopathic Parkinson's disease for ≥3 years, with a current disease severity of 2 to 4 on the modified Hoehn and Yahr scale in the OFF state.
The patient has dyskinesia that is not too severe to cause discomfort for the patient during PET imaging and predictable OFF time
In addition to the above criteria, the patient must, in the opinion of the investigator, also be suitable for the study and the included PET imaging sessions.
The patient has been receiving a stable regimen of levodopa-containing therapy (total levodopa dose ≤1600 mg per day) (≥3 doses per day of standard levodopa or ≥3 doses per day of carbidopa and levodopa, sustained-release tablets or extended-release capsules of carbidopa and levodopa or benserazide and levodopa), and be on a stable regimen of permitted anti-Parkinsonian drugs (peripheral decarboxylase inhibitors, dopamine agonists [except apomorphine], monoamine oxidase type B [MAO-B] inhibitors [except safinamide], or catechol-O-methyl transferase [COMT] inhibitors) for ≥4 weeks prior to foliglurax dosing
The patient can tolerate confined spaces for prolonged periods of time
The patient is suitable for radial and/or brachial artery blood sampling and cannulation