Sunitinib (SU) in patients with advanced, progressive pancreatic neuroendocrine tumors (pNET): Final overall survival (OS) results from a phase III randomized study including adjustment for crossover.
Bibliographic record
Abstract
309 Background: In 2010, the pivotal double blind Phase III study met its primary endpoint with a median progression-free survival (PFS) of 11.4 months (mo) for sunitinib vs. 5.5 mo for placebo (PBO) (HR=0.42; 95% CI 0.26-0.66; P <0.001) in patients (pts) with advanced, progressive pNET. This trial showed an OS difference favouring sunitinib (HR=0.41; 95% CI 0.19-0.89; P = 0.02). At 2 years since study closure, median OS was 33.0 mo for SU and 26.7 mo for PBO (HR=0.71; 95% CI 0.47-1.09; P = 0.115). Methods: A total of 171 pts were randomly assigned 1:1 to SU 37.5 mg continuous daily dose (n = 86) or PBO (n = 85). The primary end-point was investigator assessed PFS. Pts receiving PBO could crossover to SU at disease progression. Final OS at 5 years follow-up since study closure was analyzed using the Kaplan-Meier method and Cox proportional hazards model in the intent-to-treat (ITT) population. In addition, a series of methods were used to adjust for cross-over including rank-preserving structural failure time (RPSFT). Clinical trial information: NCT00428597 . Results: At 5 years follow-up since study closure, the median OS was 38.6 mo for those randomized to SU and 29.1 mo for those randomized to PBO (HR=0.73, 95% CI 0.50-1.06; P = 0.094). In total, 59 pts randomized to PBO (69%) crossed over to SU. OS results obtained applying methods to adjust for cross-over are shown in Table 1. Conclusions: The 5-year OS difference (9.5 mo) between SU and PBO is confirmed. Correction for crossover yielded a stronger OS advantage with SU, confirming that crossover likely confounded the OS results. Clinical trial information: NCT00428597. [Table: see text]
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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 | 0.003 | 0.037 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.004 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| 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".