Longitudinal Evaluation of HIV-associated Lung Disease Phenotypes
LEAP
The Study is a Multicenter, Prospective Observational Study of Pathogenesis of HIV Pulmonary Disease.
2 other identifiers
observational
232
1 country
1
Brief Summary
The overall hypotheses of this proposal are that discrete phenotypes of HIV Chronic Obstructive Pulmonary disease (COPD) differ in their trajectories, biomarkers, and risk factors and that persistent viral infection including residual HIV is linked to HIV COPD.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for all trials
Started Sep 2014
Longer than P75 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
September 1, 2014
CompletedFirst Submitted
Initial submission to the registry
September 4, 2014
CompletedFirst Posted
Study publicly available on registry
September 12, 2014
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 2, 2020
CompletedStudy Completion
Last participant's last visit for all outcomes
March 2, 2020
CompletedOctober 8, 2020
October 1, 2020
5.5 years
September 4, 2014
October 6, 2020
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
differences in the trajectory of FEV1 in clinical COPD phenotypes,
PFT's at baseline, 18 months and 36months to determine modifying risk factors and relationship of phenotypes to mortality, and delineate the association of ART and lung dysfunction.
36 months
Secondary Outcomes (1)
will measure biomarkers of these phenotypes and ability to predict HIV COPD
36 months
Study Arms (2)
HIV positive normal pulmonary function
HIV positive DLCO percent predicted \>=.80 FEV1/FVC percent predicted \>=0.70
HIV positive with pulmonary dysfuntion
HIV positive DLco percent predicted \<=0.80% FEV1/FVC percent predicted\<=0.70%
Interventions
Blood will be drawn for plasma, serum, and PBMCs. Clinical labs drawn will be for hepatitis, CMV, hemoglobin and carboxyhemoglobin.
The following questionnaires are administered to participants by study personnel at each visit: LEAP questionnaire, St. George's, and MMRC.
The routine lung function endpoints of FVC, FEV1, FEV1/FVC, and FEF25-75% will be measured before and after bronchodilator administration (4 puffs of albuterol). The best of three reproducible forced expiratory attempts is used in analysis. Percent- predicted spirometric values are based on age, height, gender, and ethnicity. DLco will be measured using the automated single-breath procedure of the integrated testing system, which conforms to ATS standards. DLco will be adjusted for hemoglobin and carboxyhemoglobin.
Six-minute walk tests are performed in a 100 foot (30.48 m) segment of straight hallway marked at 10 foot (3 m) intervals. In addition to the usual ATS protocol, the patient is monitored, when available, with Bluetooth wireless pulse oximetry and the time and distance recorded after six minutes and if they desaturate to \<88%. Dyspnea (Borg 0-10) and perceived exertion (Borg 6-20) scales are completed at the beginning and the end of test.
Subjects will undergo a standard chest CT. The CT scans will use a phantom shipped between sites to standardize results and capture contiguous volume scans acquired at slice thicknesses of 5.0 mm in the axial plane and reconstructed with 512 x 512 pixel matrices. CT examinations will encompass the entire thorax and be performed during a breath-hold at end-inspiration. We will measure % of lung tissue below a threshold for emphysema (i.e. -950 Hounsfield units). Measurements have been histologically-verified and give reproducible measurements. The data set is assembled and analyzed with the image data anonymized.
Participants will be instructed to blow their nose to remove accumulated mucus. Two sprays of commercially available nasal saline will be instilled in each nostril. The participant will then be ask to exhale through the rinsed nostril into a specimen cup. We will repeat this up to 5 times on each side depending on the participants' tolerance to the procedure. Using an otoscope, a small curette will then be used to collect 3 to 5 samples of nasal cells from each nostril. These samples will be used immediately for analysis or banked for future study.
The cardiac ultrasound will use standard ultrasound techniques to image two-dimensional slices of the heart using 3D real-time imaging.
Eligibility Criteria
The study population will be HIV positive subjects previously seen for other studies. There will be three centers enrolling, the University of Pittsburgh, the University of California San Francisco, and the University of California Los Angeles. Recruitment will occur from participants in ongoing lung studies at these sites.
You may qualify if:
- HIV-1 infection, documented in medical record at any time prior to study entry.
- Men and women age 18 to 80.
- Ability and willingness to complete all tests.
- Participant in HLRC studies, MACS, Women's Interagency Health Study, and local HIV clinics.
- For UCSF only, new ART initiators from Women's Interagency Health Study or the HIV clinic
You may not qualify if:
- Pregnancy or breast-feeding.
- Contraindication to pulmonary function testing (i.e. abdominal or cataract surgery within 3 months, recent myocardial infarction, etc.).
- Increasing respiratory symptoms or febrile (temperature \>100.40F \[380C\]) within 4 weeks of study entry.
- Hospitalization within 4 weeks prior to study entry (excluding mental health).
- Uncontrolled hypertension at screening visit (systolic \> 180 mm Hg or diastolic \> 100 mm Hg) from an average of two or more readings. Subject may return for screening after blood pressure is controlled.
- Active cancer requiring systemic chemotherapy or radiation.
- Active infection of lungs, brain, or abdomen.
- Intravenous drug use or alcohol use that will impair ability to complete study investigations in the opinion of the investigator
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- University of Pittsburghlead
- National Institutes of Health (NIH)collaborator
- National Heart, Lung, and Blood Institute (NHLBI)collaborator
Study Sites (1)
University of Pittsburgh
Pittsburgh, Pennsylvania, 15213, United States
Related Publications (3)
Drummond MB, Huang L, Diaz PT, Kirk GD, Kleerup EC, Morris A, Rom W, Weiden MD, Zhao E, Thompson B, Crothers K. Factors associated with abnormal spirometry among HIV-infected individuals. AIDS. 2015 Aug 24;29(13):1691-700. doi: 10.1097/QAD.0000000000000750.
PMID: 26372280BACKGROUNDGingo MR, Nouraie M, Kessinger CJ, Greenblatt RM, Huang L, Kleerup EC, Kingsley L, McMahon DK, Morris A. Decreased Lung Function and All-Cause Mortality in HIV-infected Individuals. Ann Am Thorac Soc. 2018 Feb;15(2):192-199. doi: 10.1513/AnnalsATS.201606-492OC.
PMID: 29313714BACKGROUNDQin S, Clausen E, Nouraie SM, Kingsley L, McMahon D, Kleerup E, Huang L, Ghedin E, Greenblatt RM, Morris A. Tropheryma whipplei colonization in HIV-infected individuals is not associated with lung function or inflammation. PLoS One. 2018 Oct 4;13(10):e0205065. doi: 10.1371/journal.pone.0205065. eCollection 2018.
PMID: 30286195BACKGROUND
Biospecimen
Whole blood, serum, bronchial wash and cells
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Professor
Study Record Dates
First Submitted
September 4, 2014
First Posted
September 12, 2014
Study Start
September 1, 2014
Primary Completion
March 2, 2020
Study Completion
March 2, 2020
Last Updated
October 8, 2020
Record last verified: 2020-10