Using PET imaging to detect early pulmonary arterial hypertension
Official title: Utilizing 18F-fluoroglutamine PET Imaging in Patients With Pulmonary Arterial Hypertension
Run by University of Pittsburgh · NCT05452889 · Data updated 2026-11-12
This study is testing a new imaging method to see if it can help detect early signs of pulmonary arterial hypertension in patients before it gets worse.
Quick facts
| Phase | Early Phase 1 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 75 Years |
| Sex | All |
| Enrollment | 71 (estimated) |
| Sponsor | University of Pittsburgh Academic / other |
| Drugs / interventions | radiation |
| Locations | 1 site (Pittsburgh, Pennsylvania) |
| Status | Recruiting |
| Started | July 11, 2022 |
| Main results expected | January 2027 |
| Study ends | February 2027 |
| Registry record updated | January 21, 2026 |
| Trial ID | NCT05452889 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates include adults aged 18-75 with a confirmed diagnosis of scleroderma-related PAH or idiopathic PAH.
✕Probably not a fit
Patients with a history of smoking, certain medical conditions affecting the heart or lungs, or those who are pregnant or breastfeeding may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study aims to utilize 18F-fluoroglutamine (18F-FGln) PET imaging to assess glutamine uptake in patients diagnosed with pulmonary arterial hypertension (PAH) compared to healthy controls. The objective is to develop a non-invasive imaging biomarker that can detect early stages of PAH, which is often misdiagnosed and leads to significant disease progression. The research team, consisting of experts in the field, will conduct in-human imaging to quantify metabolic changes associated with PAH. This pilot experiment seeks to establish the potential of 18F-FGln as a diagnostic tool for early intervention.
Why it matters
Potential benefit: If successful, this study could lead to earlier and more accurate diagnoses of pulmonary arterial hypertension, improving patient outcomes.
How similar studies have gone: While some studies have explored imaging techniques for PAH, the specific use of 18F-FGln PET imaging for this purpose is novel and has not been extensively tested.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: Cases: 1. Age between 18-75 years old 2. Confirmed diagnosis of SSc-PAH / SSc-eiPAH/IPAH/ by right heart catheterization. And Scleroderma with no PAH confirmand by echo. Controls: 1. Age between 18-75 years old 2. Individuals who are at low risk for current or future cardiovascular or pulmonary symptoms or diseases Exclusion Criteria: Cases: 1. Smoking 2. Pregnant/ breast feeding women 3. Children under 18 4. Inability to read and understand the informed consent 5. History of CT contrast allergy 6. Inability to lie down for long period of time 7. Having claustrophobic 8. History of radiation exposure at workplace 9. Consuming more than 2-3 alcoholic drinks a week 10. Working previously in any of the following "cool miner, painter, iron miner, Mill worker, asbestos, insulation/heat resistance materials, sand" 11. Any medical conditions involving the heart or lungs that would make participation in the study unsafe in the opinion of the PI. Controls: 1. Smoking 2. Pregnant/ breast feeding women 3. Children under 18 4. Inability to read and understand the informed consent 5. History of CT contrast allergy. 6. Inability to lie down for long period of time 7. Having claustrophobic 8. History of radiation exposure at workplace 9. Consuming more than 2-3 alcoholic drinks a week 10. Working previously in any of the following "coal miner, painter, iron miner, Mill worker, asbestos, insulation/heat resistance materials, sand" 11. Any medical conditions involving the heart or lungs or that would make participation in the study unsafe in the opinion of the PI. 12. Family history of Pulmonary Hypertension or Scleroderma
Where it's running
-
Montefiore Hospital Clinical and Translational Research Center
Pittsburgh, Pennsylvania, United States Recruiting
Study contacts
- Principal investigator: Stephen Chan — University of Pittsburgh
- Study coordinator: Yassmin Al Aaraj
- Email: yaa29@pitt.edu
- Phone: 14126479227
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Understanding how low-load leg exercises affect muscle and blood flow in PAH patients
This substudy tests whether a gentle leg exercise program can change blood flow and oxygen use in the calf muscles of adults with pulmonary arterial hypertension.
-
Sotatercept in Japanese children with pulmonary arterial hypertension
This study tests whether sotatercept is safe and well tolerated in Japanese children with PAH when added to standard PAH treatment.
-
DIAG723 in Adults With HHT
A first-in-human study tests DIAG723 versus placebo in adults with hereditary hemorrhagic telangiectasia to see if it is safe and possibly helpful.
-
See if 18F-FAPI-74 PET/CT can better detect fibrosis in heart and lung disease
Researchers are testing a new PET/CT tracer, 18F-FAPI-74, to see if it can reveal early fibrotic changes in people with heart and lung diseases who are at risk for tissue scarring.
-
Sotatercept in Indian adults with pulmonary arterial hypertension on standard therapy
This study tests whether adding sotatercept to current PAH medicines is safe and tolerable for adults with PAH in India.
-
Once-daily treprostinil palmitil inhalation powder for PAH
This study tests whether taking a daily inhaled treprostinil palmitil powder for 24 weeks improves exercise ability in adults with pulmonary arterial hypertension compared to a placebo.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.