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This study aims to compare biological communities in stool samples obtained from age, diet and BMI-matched subjects in five study groups: subjects with ankylosing spondylitis (AS) never treated with tumor necrosing factor (TNF) inhibitors, subjects with ankylosing spondylitis previously or currently treated with TNF inhibitors, subjects with non-radiographic axial spondyloarthritis (nrSpA) never treated with tumor necrosing factor (TNF) inhibitors, subjects with non-radiographic axial spondyloarthritis previously or currently treated with TNF inhibitors and healthy participants.
The differences in fecal microbiota composition will be explored using shotgun metagenomic sequencing through the University of Washington. The investigators predict that this study will confirm a significant difference between the fecal microbiota composition (FMC) of both AS and nrSpA patients and controls.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| TNF blocker-naïve ankylosing spondylitis patients | |||
| TNF blocker-exposed ankylosing spondylitis patients | |||
| TNF blocker-naïve nrSpA patients | |||
| TNF blocker-exposed nrSpA patients | |||
| Healthy Participants |
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| Measure | Description | Time Frame |
|---|---|---|
| Weighted and unweighted UniFrac distances between stool samples from the five study groups | Within 1 month of baseline visit |
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Inclusion Criteria:
Exclusion Criteria:
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At least 50 subjects, male and female, aged 18 or older, will be recruited to the study and assigned to one of five groups:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| St. Lawrence Health System | Potsdam | New York | 13676 | United States |
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| ID | Term |
|---|---|
| D000089183 | Axial Spondyloarthritis |
| D013167 | Spondylitis, Ankylosing |
| ID | Term |
|---|---|
| D025242 | Spondylarthropathies |
| D025241 | Spondylarthritis |
| D013166 | Spondylitis |
| D013122 | Spinal Diseases |
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Subjects will have the option to provide additional consent for specimens to be retained by the research team indefinitely for research purposes. These samples will be identified only by the numeric study ID; no personally identifying information will be associated with the retained samples. The samples could be used to make new products, tests or findings, which may have value and may be developed and owned by the research team and/or others. Investigators will not be able to provide subjects with results from any future research that is done using their samples.
| D001847 |
| Bone Diseases |
| D009140 | Musculoskeletal Diseases |
| D000844 | Ankylosis |
| D007592 | Joint Diseases |
| D001168 | Arthritis |