S760 Persistence of Tofacitinib Treatment in Patients With Ulcerative Colitis Who Entered the Open-Label, Long-Term Extension Study, OCTAVE OPEN in Remission or With a Clinical Response
Bibliographic record
Abstract
Introduction: Drug survival in open-label, long-term extension (OLE) studies may provide important information on the long-term efficacy and tolerability of a therapy. Tofacitinib is an oral, small molecule JAK inhibitor for the treatment of UC. Efficacy and safety were demonstrated in three Phase 3, randomized, PBO-controlled studies in patients (pts) with moderate to severe UC. A Phase 3, OLE study (OCTAVE Open, NCT01470612) included pts from OCTAVE Induction 1 & 2 and OCTAVE Sustain. Methods: Data on the persistence of tofacitinib treatment in the OLE study for pts who had a clinical response at Week (Wk) 52 of treatment with tofacitinib 5 or 10 mg BID, or PBO, in OCTAVE Sustain were evaluated. Data were analyzed for all responder pts and by remission status: responders who were also in remission (remitters; assigned to tofacitinib 5 mg BID per OLE study protocol), and responders who were not in remission (responders/non-remitters) at OLE baseline (assigned to tofacitinib 10 mg BID per OLE study protocol) (Figure 1). Duration of treatment in the OLE study varied by pt. Results: At baseline of the OLE study, there were 280 pts with a clinical response (all responders) which included 164 remitters and 116 responders/non-remitters who were treated for a maximum of 7 years in the OLE study (Table 1). Of these, 118 (42.1%) pts discontinued the OLE study (68/164 [41.5%] among remitters and 50/116 [43.1%] among responders/non-remitters) with a median time to discontinuation of 291 wks. Overall, the estimated 2- and 5-year tofacitinib persistence rates in the all-responder population were 73.9% and 54.5%, respectively. These rates were numerically higher in remitters (76.8% and 56.9%, respectively) vs responders/non-remitters (69.8% and 50.0%, respectively). During the OLE study, 43 (26.2%) remitters increased tofacitinib dose from 5 to 10 mg BID, and 15 (12.9%) responders/non-remitters decreased tofacitinib dose from 10 to 5 mg BID. Conclusion: With up to 7 years of follow-up, treatment persistence to tofacitinib was highest amongst pts who were responders/remitters compared with responders/non-remitters and the majority of pts continued to be on treatment at 5 years. Analyses are post hoc and limited by sample size. Further research will help to understand the reasons for continuation or discontinuation of tofacitinib treatment in pts with UC.Figure 1.: Mean change from baseline in A) abdominal pain and B) stool frequency through Week 12.Table 1.: Pregnancy outcomes following maternal exposure to CZP. [a] All CZP-exposed pregnancies in women with CID, including those with CD; [b] Multiple births are counted as separate outcomes, so the total number of outcomes is higher than the total number of patients/pregnancies; [c] Reported using the total number of patients/pregnancies as the denominator; [d] Delivery before 37 weeks’ gestation. CD: Crohn’s disease; CID: chronic inflammatory disease; CZP: certolizumab pegol; SD: standard deviation.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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 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".