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Study identifier: NCT05745961 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Quantifying 18kDa TSPO Expression in the Lung in Pulmonary Artery Hypertension (PAH)

Condition: Pulmonary Arterial Hypertension · Healthy  ·  Sponsor: Imperial College London

PhaseN/A
Planned participants6
Who can joinAll sexes, 25 Years to 75 Years
Healthy volunteersNo

About this study

The aim of this study is to determine whether there is an increase in the TSPO PET signal (measured with the radioligand \[11C\]PBR28) in the lungs of patients living with PAH relative to age matched controls. If so, TSPO PET may be a useful technique to non-invasively monitor response to therapy. To do this, we will perform 2 \[11C\]PBR28 PET scans. The first will quantify the total \[11C\]PBR28 PET signal. This signal is a combination of the specific signal (VS) and the nonspecific signal (VND). The second scan will be performed following dosing with an unlabelled TSPO ligand. By directly measuring the total \[11C\]PBR28 signal (scan 1) and the nonspecific \[11C\]PBR28 signal (scan 2) we can therefore calculate the specific \[11C\]PBR28 signal, and hence the amount of TSPO in the lung.

This description comes directly from the study's public registry record.

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Locations (1)

Imperial Clinical Research FacilityLondon, United KingdomRecruiting

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Source record: clinicaltrials.gov/study/NCT05745961