Alfa-1 Antitripsin Eksikliğinde Bağışıklığın Epigenetik Düzenlenmesi

Sade dilde özet

Bu çalışma, alfa-1 antitripsin eksikliği (alpha-1 antitrypsin deficiency) olan kişilerde bağışıklık sisteminin epigenetik düzenlenmesini araştıran gözlemsel bir çalışmadır. Çalışmaya, kan düzeyleri ve genetik testlerle doğrulanmış AATD (PiZZ veya PiMZ) tanısı olan, 18-85 yaş arası kişiler alınmıştır. Faz uygulanmayan bir çalışma olarak yürütülmüş ve tamamlanmıştır.

Yukarıdaki özet, resmî kaydın sade dile aktarılmış halidir. Orijinal İngilizce başlık referans için gösterilir.

Deney bilgileri

Faz

N/A

Durum

Tamamlandı

Sponsor

National Jewish Health

Başlangıç

01.12.2015

Tahmini bitiş

01.07.2020

Ülkeler

United States

İlgili genler

Merkezler

• Denver, United States

Uygunluk kriterleri

Kriterler ClinicalTrials.gov kaydından orijinal İngilizce haliyle alınmıştır. Uygunluk kararını yalnızca deneyi yürüten ekip verebilir.

Inclusion Criteria:

AATD

* Age between the ages of 18 and 85
* Have a diagnosis of AATD PiZZ or PiMZ established by AAT blood levels and Pi genotyping
* Are not and have not been on AAT augmentation therapy for the past 6 months
* Able to tolerate and willing to undergo study procedures
* Provide signed informed consent.

Exclusion Criteria:

AATD

1. History of comorbid condition severe enough to significantly increase risks based on investigator discretion
2. Diagnosis of unstable cardiovascular disease including myocardial infarction in the past 6 weeks, uncontrolled congestive heart failure, or uncontrolled arrhythmia
3. Partial Pressure of Oxygen (PaO2) on room air at rest \<50 mmHg or Oxygen saturation (SaO2) on room air at rest \<85%
4. Post bronchodilator Forced expiratory volume in one second (FEV1)\<30% predicted
5. Use of anticoagulation (patients on warfarin or clopidogrel will be excluded; patients on aspirin alone can be studied even with concurrent use)
6. Dementia or other cognitive dysfunction which in the opinion of the investigator would prevent the participant from consenting to the study or completing study procedures
7. Active pulmonary infection with tuberculosis
8. History of pulmonary embolism in the past 2 years
9. Non-Chronic Obstructive Pulmonary Disease (COPD) obstructive disease (various bronchiolitides, sarcoid, lymphangioleiomyomatosis (LAM), histiocytosis X) or parenchymal lung disease, pulmonary vascular disease, pleural disease, severe kyphoscoliosis, neuromuscular weakness, or other cardiovascular and pulmonary disease, that, in the opinion of the investigator, limit the interpretability of the pulmonary function measures
10. Prior significant difficulties with pulmonary function testing
11. Hypersensitivity to or intolerance of albuterol sulfate or ipratropium bromide or propellants or excipients of the inhalers
12. Hypersensitivity to or intolerance of all drugs required for sedation during conscious sedation bronchoscopy.
13. History of Lung volume reduction surgery, lung resection or bronchoscopic lung volume reduction in any form
14. History of lung or other organ transplant
15. History of large thoracic metal implants (e.g., Implantable cardioverter-defibrillator (AICD) and/or pacemaker) that in the opinion of the investigator limit the interpretability of CT scans
16. Currently taking \>=10mg a day/20mg every other day of prednisone or equivalent systemic corticosteroid
17. Currently taking any immunosuppressive agent excepting systemic corticosteroids
18. History of lung cancer or any cancer that spread to multiple locations in the body
19. Current illicit substance abuse, excluding marijuana
20. Known HIV/AIDS infection
21. History of or current exposure to chemotherapy or radiation treatments that, in the opinion of the investigator, limits the interpretability of the pulmonary function measures.
22. Has a BMI \> 40 kg/m2 at baseline exam
23. Current or planned pregnancy within the study course.
24. Currently institutionalized (e.g., prisons, long-term care facilities)
25. Have a genotype of PiMZ and ever received intravenous or inhaled alpha-1 augmentation therapy (Alpha-1 Proteinase Inhibitor, A1PI)

Conditional Exclusions

1. Participants who present with an upper respiratory infection or pulmonary exacerbation, either solely participant-identified or that has been clinically treated, in the last six weeks can be rescreened for the study once the six-week window has passed.
2. Participants who present with current use of acute antibiotics or steroids can be rescreened for the study ≥30 days after discontinuing acute antibiotics/steroids.

   This does not apply to participants who are on chronic prednisone therapy of \<10 mg per day or \<20 mg every other day.
3. Participants who present with a myocardial infarction or eye, chest, or abdominal surgery within six weeks can be rescreened after the six week window has passed.

   Study coordinators should consult with the site principal investigator prior to rescreening these participants.
4. Female participants who present \<3 months after giving birth will be asked to reschedule their visit until three months have passed since the birth.
5. Individuals who are PiZZ receiving alpha-1 augmentation therapy (Alpha-1 Proteinase Inhibitor, A1PI) must be off augmentation therapy for \>6 months to qualify for stratified enrollment in the PiZZ group not receiving augmentation therapy.