Association of IgA Anti-ß2 Glycoprotein I with Clinical and Laboratory Manifestations of Systemic Lupus Erythematosus
Bibliographic record
Abstract
OBJECTIVE: IgA isotypes of anticardiolipin and anti-ß(2) glycoprotein I (anti-ß(2)-GPI) are omitted from the revised antiphospholipid syndrome (APS) classification criteria. Multiple studies have found a high prevalence of IgA anti-ß(2)-GPI in systemic lupus erythematosus (SLE). We determined the frequency and associations of IgA anti-ß(2)-GPI in a cohort of patients with SLE. METHODS: anti-ß(2)-GPI was measured in 796 patients with SLE (93% women, 53% white, 38% African American, mean age 45 yrs). IgA anti-ß(2)-GPI (> 20 phospholipid units) was found in 20%. Using a cohort database, associations with cumulative thrombotic and other manifestations were determined. RESULTS: of patients with SLE who demonstrated IgA anti-ß(2)-GPI positivity, about 6% had transient ischemic attack (p = 0.070), 4% had superficial thrombophlebitis (p = 0.647), 20% had deep venous thrombosis (p = 0.003), 4% had other venous thrombosis (p = 0.827), 12% had stroke (p = 0.050), and 1% had myocardial infarction (p = 0.397). CONCLUSION: IgG anti-ß(2)-GPI has the strongest association with thrombosis in SLE. However, IgA anti-ß(2)-GPI was more strongly associated with deep venous thrombosis and with stroke than was IgM. These results indicate that assessment of IgA anti-ß(2)-GPI is associated with thrombosis in SLE, and that the classification criteria for APS should be revised to include IgA anti-ß(2)-GPI in patients with SLE.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".