Clinical trial NCT00279708
Conditions: Sarcoidosis, Pulmonary
Keywords: Granulomatous Inflammation Steroid-Sparing Pulmonary Function Sarcoidosis, Pulmonary Statins (Atorvastatin) Biomarkers Nitric Oxide Disease Activity Quality of Life Corticosteroids Pulmonary Sarcoidosis Sarcoidosis
Sponsor: National Heart, Lung, and Blood Institute (NHLBI)
Start date: 2006-01-01; Completion date: 2015-12-01
Enrollment: 55 participants; Allocation: RANDOMIZED; Intervention model: PARALLEL

Brief summary:
This study will determine if atorvastatin (Lipitor) can help patients with pulmonary (lung) sarcoidosis and replace or reduce the need for patients to take steroids, such as prednisone. Sarcoidosis is an inflammatory disease that can affect nearly any part of the body. Pulmonary sarcoidosis may resolve on its own or it may progress to irreversible lung damage, disability, and death. Many sarcoidosis patients are treated with prednisone, but the drug is not effective in all patients, and it can cause serious side effects, such as high blood pressure, sugar diabetes, eye cataracts, and bone thinning.

Patients with stage II or III pulmonary sarcoidosis between 18 and 70 years of age who require prednisone may be eligible for this study. Candidates are screened with the tests and procedures described below.

Participants are randomly assigned to one of two treatment groups: one group takes atorvastatin; the other takes a placebo (a look-alike pill that has no active ingredient to fight sarcoidosis). Both groups take the pills by mouth once a day for 12 months. When treatment begins, participants begin to have their prednisone dosage tapered (reduced). The tapering is done over 8 weeks until the dose is reduced by 90 percent. Patients are evaluated periodically to determine if the two groups differ in how long they can remain on the reduced dose of prednisone without having their symptoms recur, requiring an increase in the prednisone dose. A full battery of tests is done at the initial screening visit and at the 26- and 52-week follow-up visits, requiring hospitalization for 3-5 days. Additional interim outpatient assessments are done at 6, 12, 18 and 36 weeks.

The full battery of tests at the initial screening and the 26- and 52-week visits includes the following:

* Medical history, physical examination, blood and urine tests, assessment of disease severity and activity.
* Questionnaires.
* Chest x-ray (CXR) and computed tomography (CT) scan.
* Abdominal ultrasound.
* Six-minute walk test (6MWT)
* Exercise testing and blood gases
* Pulmonary function tests (PFT)
* Maximum incremental ventilatory performance test (MIVP)
* Exhaled nitric oxide and carbon monoxide (Exhaled NO and CO)
* Bronchoscopy and lavage

Interim testing at 6, 12, 18 and 36 weeks includes PFT, MIVP, Exhaled NO and CO, CXR, questionnaire, blood tests, and 6MWT.

Six months after completing the study, participants fill out a questionnaire.

Detailed description:
Background

Sarcoidosis is a multi-system granulomatous inflammatory disease. Pulmonary involvement is most common. Patients typically experience fatigue, weakness and dyspnea. Respiratory muscle weakness, which may be secondary to granulomatous inflammation, is associated with dyspnea and decreased quality of life (QOL). The disease can remit spontaneously or become chronic, with exacerbations and remissions. In some patients, it can progress to pulmonary fibrosis and death. Granulomatous inflammation is characterized primarily by accumulation of monocytes, macrophages and activated T-lymphocytes, with increased production of key inflammatory mediators, TNF-alpha, INF-gamma, IL-2 and IL-12, characteristic of a Th1-polarized response (T-helper lymphocyte-1 response). Corticosteroids are the current mainstay of treatment, but their long-term benefits are not certain. Because steroids often produce undesirable side effects, investigations to identify alternative therapies are warranted. There is sufficient evidence to test the proof of concept that pathways targeted by statins will have a therapeutic effect in sarcoidosis, since, in pre-clinical studies, statins blunt Th1-mediated inflammatory responses.

Aims

The study involves a double-blind placebo-controlled, randomized trial which aims to determine if atorvastatin administration results in less steroid use and longer steroid-free intervals in patients with pulmonary sarcoidosis who require prednisone treatment.

Methods

Patients, who are 18-70 years old, with stage II or III pulmonary sarcoidosis, diagnosed by a compatible clinical history and supported by a lung, lymph node, or tissue biopsy, will be enrolled in the study, if they require prednisone therapy. The patients will be randomly assigned to two groups; as prednisone is tapered, one group will receive placebo and the other, atorvastatin. The two study drugs will be administered for twelve months, during which time patients will be periodically evaluated as to their clinical status and prednisone requirements. Pill counts and patient diaries will be used to determine the amount of steroid use during the study period. Patients with pulmonary fibrosis greater than 50 percent of total lung volume or severe co-morbidities will be excluded from the trial.

The primary endpoint is the duration of the steroid-sparing period. Secondary clinical and physiological endpoints are intended to analyze possible anti-inflammatory and beneficial effects of the drugs. Since there is no gold standard outcome measure in sarcoidosis, four categories of secondary endpoints will be used to characterize the effects of the therapeutic agent on the clinical course of the disease: imaging (high resolution chest CT); quality of life assessments (SF-36, and SGRQ), anti-inflammatory effects (biomarkers and relapse rates), and functional effects (CPET, PFTs). Finally, we will study the utility of exhaled nitric oxide and carbon monoxide in monitoring disease activity.

Arms: arm 1: Atorvastatin: Subjects were assigned to the treatment intervention by way of double blind masking. Atorvastatin 80 mg/day was the initial treatment given, as tolerated for a 12 month period. During the study, a 50% dose reduction was applied for subjects meeting pre-specified criteria. arm 2: Placebo: In a double-blind fashion, subjects were assigned to receive the sham intervention which appeared the same as the intervention agent. For subjects meeting pre-specified criteria, a 50% dose reduction was applied during the 12 month treatment phase of the study: Placebo vs. Atorvastatin
Interventions: intervention 1: Atorvastatin intervention 2: Placebo Oral Tablet
Intervention descriptions: intervention 1: Placebo vs. Atorvastatin intervention 2: Placebo: Sham Therapy in an oral tablet formulation

Protocol documents: