Surgical Complications in Patients with (borderline) Resectable Pancreatic Cancer after Neoadjuvant Therapy in the PREOPANC-2 Randomized Controlled Trial
Bibliographic record
Abstract
OBJECTIVE: To compare the incidence of major surgical complications between patients with (borderline) resectable pancreatic cancer treated with neoadjuvant FOLFIRINOX versus neoadjuvant gemcitabine-based chemoradiotherapy. SUMMARY OF BACKGROUND DATA: There are ongoing concerns regarding the possible adverse impact of neoadjuvant treatment on postoperative complication rates following pancreatectomy. METHODS: This study was a predefined analysis within the investigator-initiated nationwide randomized controlled PREOPANC-2 trial. Patients with (borderline) resectable pancreatic cancer were randomized to receive neoadjuvant FOLFIRINOX (FFX group) or neoadjuvant gemcitabine-based chemoradiotherapy (CRT group), both followed by surgery, and adjuvant gemcitabine only in the CRT group. Surgical complications including postoperative pancreatic fistula, postpancreatectomy hemorrhage, bile leakage, postoperative interventions, and 90-day mortality were compared, with major complications defined as Clavien-Dindo grade ≥3. RESULTS: Between June 5, 2018, and January 28, 2021, in total 375 patients were randomized, of whom 280 (74.7%) underwent pancreatic resection. A pancreatoduodenectomy was performed in 238 patients (85.0%), left pancreatectomy in 41 patients (14.6%), and total pancreatectomy in one patient (0.4%). The incidence of major surgical complications was similar between the FFX and CRT groups (26.8% versus 27.5%, P=0.884). No differences were observed in the risk of postoperative pancreatic fistula grade B/C (9.9% versus 4.4%, P=0.076), postpancreatectomy hemorrhage grade B/C (7.7% versus 3.6%, P=0.137), bile leakage grade B/C (2.5% versus 2.5%, P>0.999), and postoperative interventions (26.1% versus 26.8%, P=0.886). Surgical reoperation was performed in nine patients (6.3%) in the FFX group and eight patients (5.8%) in the CRT group (P=0.850). The postoperative 90-day mortality was 1.4% in the FFX group (2/142 patients) and 2.9% in the CRT group (4/138 patients) (P=0.442). CONCLUSIONS: In the PREOPANC-2 randomized trial, the risk of major surgical complications after pancreatic resection following neoadjuvant FOLFIRINOX or neoadjuvant gemcitabine-based chemoradiotherapy was similar with an overall low 90-day mortality.
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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 | 0.003 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.002 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 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".