S1PR Modulators in the Management of Ulcerative Colitis: Considerations for Practice
Bibliographic record
Abstract
Sphingosine-1-phosphate receptor (S1PR) modulators are novel oral small-molecule therapies that offer a unique profile compared to other advanced therapies in the treatment of ulcerative colitis (UC), including oral administration, linear pharmacokinetic profiles, reduced immunogenicity, and lower costs associated with manufacturing. The activation of S1P G-protein coupled receptors plays an inflammatory role in UC by promoting lymphocyte egress from lymphoid organs into circulation and colonic mucosa. S1PR modulators lead to internalization and degradation of these receptors, thereby reducing inflammation. Ozanimod was the first S1PR modulator approved for treating moderately-to-severely active UC and is also approved for multiple sclerosis. More recently, a second agent, etrasimod, was approved for UC. Etrasimod acts on different S1PR subtypes to avoid off target vascular and cardiac effects, has no up-titration regimen during initiation, a shorter half-life and less propensity for drug interactions. This review summarizes clinical trial and real-world data and provides guidance on the clinical uses of S1PR modulators.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.007 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.003 | 0.005 |
| Insufficient payload (model declined to judge) | 0.006 | 0.003 |
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 source (direct Gemma or distilled Codex), 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".