Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Antisynthetase syndrome (AS) is a rare overlapping myositis characterized by cellular and humoral autoimmune responses directed against aminoacyl-tRNA synthetases. A pathogenic role of neutrophils was described during inflammatory myopathies, with increased netosis correlated with disease activity and muscle damage. Higher number of alveolar neutrophils was observed in patients with rapidly progressive forms of interstitial lung disease.
Peripheral neutrophils could represent a simple biomarker of severity and activity in patients with antisynthetase syndrome.
The main objective is to compare circulating neutrophils between severe and non severe patients with antisynthetase syndrome. Secondary objectives are: 1) to evaluate correlation between circulating neutrophils and organ-specific severity, 2) to compare circulating neutrophils at time of diagnosis and circulating neutrophils after 6 months of treatment in patients with antisynthetase syndrome.
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Patients with antisynthetase syndrome |
Not provided
| Measure | Description | Time Frame |
|---|---|---|
| Number of circulating neutrophils | circulating neutrophils values (number of cells/mm3) | at diagnosis (Day 0) |
| Global severity | composite criteria of global severity: severe interstitial lung disease (ILD) and/or severe muscular disease | at diagnosis (Day 0) |
| Measure | Description | Time Frame |
|---|---|---|
| Circulating neutrophils change over time | circulating neutrophils values (number of cells/mm3) | at 6 months of follow-up |
| ILD severity | %predicted FVC values in patients with ILD |
Not provided
Inclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Patients with antisynthetase syndrome
Not provided
Not provided
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CHU Nancy | Vandœuvre-lès-Nancy | France |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| ID | Term |
|---|---|
| C537778 | Antisynthetase syndrome |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| at diagnosis (Day 0) |
| ILD severity | %predicted DLCO values in patients with ILD | at diagnosis (Day 0) |
| Muscular severity | manual muscle testing (MMT) grading in patients muscle involvement | at diagnosis (Day 0) |
| Muscular severity | CPK values (U/L) in patients muscle involvement | at diagnosis (Day 0) |