The Role of Serum Amyloid A in Clinical Decision-making Concerning Sarcoidosis Patients
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 135
- 试验地点
- 1
- 主要终点
- The correlation of mean serum concentration of serum amyloid A (SAA) in patients, newly diagnosed with intrathoracic sarcoidosis to mean value in healthy controls
研究概览
简要总结
The goal of this observational study is to elucidate the role of serum amyloid A (SAA) in the diagnosis and follow-up of sarcoidosis, including its prognostic value. The main questions it aims to answer are:
- Whether, at the time of diagnosis, SAA is in correlation with other serum markers of granulomatous inflammation, interstitial disease and pulmonary fibrosis, lung function and radiologic characteristics of intrathoracic sarcoidosis,
- Whether increased serum concentrations of SAA at the time of diagnosis act as a prognostic marker of progressive granulomatous inflammation and pulmonary interstitial disease.
Patients will undergo standard diagnostic procedures for intrathoracic sarcoidosis, according to WASOG (World association of sarcoidosis and other granulomatous disorders) criteria. Two additional vials of blood will be taken at diagnosis and one vial at follow-up for serum processing and biomarker analysis.
Healthy blood donors will represent our group of healthy controls.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Retrospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Above 18 years of age
- •Enrolled immediately after the first diagnostic workup and before any treatment was initiated.
排除标准
- •Individuals with granulomatous disease that could not be unequivocally diagnosed as sarcoidosis were excluded, as well as patients with possible confounding other known systemic inflammatory illnesses, acute infection, patients on immunosuppressive drugs or immunotherapy and patients with active cancer.
结局指标
主要结局
The correlation of mean serum concentration of serum amyloid A (SAA) in patients, newly diagnosed with intrathoracic sarcoidosis to mean value in healthy controls
时间窗: 4 years for patient enrollment
The mean serum concentration of serum amyloid A (SAA) (in micrograms per millilitre) in patients, newly diagnosed with intrathoracic sarcoidosis will be determined for our entire intrathoracic sarcoidosis cohort and separately first for patients in different Scadding stages (0-4) and secondly according to high-resolution computed tomography (HRCT) pattern (lymph node enlargement, peribronchovascular/perilymphatic lesions, ground-glass lesions and pulmonary fibrosis). The mean values will then be compared to the mean value of SAA in healthy controls to determine possible statistically significant differences.
Correlation of serum concentrations of SAA at the time of diagnosis of intrathoracic sarcoidosis to pulmonary function test results.
时间窗: 4 years for patient enrollment
We will determine whether serum concentrations of SAA corelate to results of lung function tests (percentages predicted of forced vital capacity, forced expiratory volume in 1 second and diffusion capacity for carbon monoxide) at the time of diagnosis of intrathoracic sarcoidosis.
Correlations of serum concentrations of SAA at the time of diagnosis of intrathoracic sarcoidosis to changes in HRCT disease extent after 3 years of follow-up.
时间窗: 3 years follow-up
We will determine whether SAA concentrations at the time of diagnosis of intrathoracic sarcoidosis correlate with changes in HRCT disease extent (descriptive terms used: resolution, stagnation, progression) at patient follow-up after 3 years.
Correlation of serum concentrations of SAA at the time of diagnosis of intrathoracic sarcoidosis to radiologic extent of disease.
时间窗: 4 years for patient enrollment
We will determine whether serum concentrations of SAA at the time of diagnosis of intrathoracic sarcoidosis correlate with extent of disease on HRCT, expressed in percentage of pulmonary parenchyma involved (0%, 0-33%, 33-66%, 66-100%).
The correlation of serum concentrations of serum amyloid A (SAA) at the time of diagnosis of intrathoracic sarcoidosis with serum concentrations of other biomarkers of granulomatous inflammation and pulmonary interstitial disease.
时间窗: 4 years for patient enrollment
We will determine whether serum concentrations of SAA at the time of diagnosis of intrathoracic sarcoidosis corelate to serum concentrations of granulomatous disease markers (CC chemokine ligand 18 (CCL18), monokine induced by interferon-γ (CXCL9), interferon-γ-induced protein 10 (CXCL10)) and activity of serum chitotriosidase (CTO) and serum concentrations of biomarkers of interstitial lung disease and lung fibrosis (surfactant protein D (SP-D) and cancer antigen 15.3 (CA 15.3)/Krebs von den Lungen 6 (KL-6)).
Correlation of serum concentrations of SAA at the time of diagnosis of intrathoracic sarcoidosis to changes in lung function tests after 3 years of follow-up.
时间窗: 3 years follow-up
We will determine whether SAA concentrations at the time of diagnosis of intrathoracic sarcoidosis correlate with changes in lung function tests (percentages predicted of forced vital capacity, forced expiratory volume in 1 second and diffusion capacity for carbon monoxide) at patient follow-up after 3 years.
Correlation of serum concentrations of SAA at the time of diagnosis of intrathoracic sarcoidosis to need for recent/ongoing therapy after 3 years of follow-up.
时间窗: 3 years follow-up
We will determine whether serum concentrations of SAA at the time of diagnosis of intrathoracic sarcoidosis correlate with the need for recent/ongoing therapy in patients, assessed at a 3-year follow-up.
次要结局
未报告次要终点
研究者
Zala Leštan
Principal Investigator
University Medical Centre Ljubljana