About this trial
The goal of this clinical trial is to learn about the safety and efficacy of Pioglitazone in people with Pulmonary Hypertension (PH) due to Chronic Lung Disease (CLD). The main question it aims to answer is:
• Whether pioglitazone affects mitochondrial oxygen utilization in patients with PH due to CLD.
Participants will be asked to take pioglitazone or placebo once daily for 28 days followed by a washout period of 2 weeks followed by 28 days of the other study drug (participants randomized to placebo followed by pioglitazone or pioglitazone followed by placebo).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Provision of a signed and dated informed consent form
Stated willingness to comply with all study procedures for the duration of the study
Confirmed to have pulmonary hypertension (PH) due to chronic lung disease at screening
Mean pulmonary artery pressure >20 mmHg
Disqualifiers
Diabetes mellitus (type 1 or type 2), present within the preceding 1 year
Personal history of symptomatic hypoglycemia within 90 days preceding enrollment
Personal outpatient use of pioglitazone, rosiglitazone, metformin, insulin, or other medications for the indication of diabetes within 90 days preceding enrollment
History of left ventricular failure (systolic or diastolic)
Trial design
Crossover
Treatments tested in this trial
Pioglitazone 30mg
DrugStudy participants will take Pioglitazone 30 mg PO daily
Placebo
DrugStudy participants will take a placebo PO daily
Labs
Diagnostic testLabs will be performed for Urine HCG, Complete Blood count (CBC), Chemistry Panel, Fasting lipids, insulin, glucose, and Bioenergetic analysis (platelets).
Treatment groups
Trial outcomes
Primary outcomes
Change in Mitochondrial metabolism parameters: Spare respiratory capacity
Mitochondrial metabolism is measured using a research protocol employing the Agilent Seahorse extracellular flux bioanalyzer. Standard Seahorse assay protocols have been adapted for use with human platelets . Spare respiratory capacity (SRC) is calculated by (maximal respiration) - (basal respiration) during the mitochondrial stress test. The value is reported in pmol/min.
Change in Mitochondrial metabolism parameters: Maximal respiration
Maximal Respiration is calculated by: (post-carbonyl cyanide 4-(trifluoromethoxy) phenylhydrazone(FCCP) - (nonmitochondrial respiration) during the mitochondrial stress test. The value is reported in pmol/min.
Change in Mitochondrial metabolism parameters: Basal respiration
Basal respiration is calculated by (Baseline) - (nonmitochondrial respiration) ) during the mitochondrial stress test. The value is reported in pmol/min.
Secondary outcomes
Number of hypoglycemia incidences
Participants experiencing symptoms of hypoglycemia will be identified and reported.
Number of participants with leg edema
Participants reporting edema (\>2) will be captured.
Change in BNP levels
Change in Brain Natriuretic Peptide from the baseline will be calculated. Unit is pg/ml
Change in Six minute walk distance (6MWT)
The six-minute walk test (6MWT) is a standardized test of exercise capacity commonly used in patients with heart failure, lung disease, PH, and in pre-lung transplant evaluation. Results will be recorded as the distance walked in meters.
Sponsors and contacts
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Emory University
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
Collaborator