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Intraoperative liquid biopsy as a tool for detecting R1 resection during pancreatoduodenectomy in patients with pancreatic carcinoma. the CETUPANC trial (part II)

2024; Wolters Kluwer; Volume: 110; Issue: 12 Linguagem: Inglês

10.1097/js9.0000000000002153

1743-9191

Javier Padillo-Ruíz, Carlos Martín García, G. Suárez Artacho, Gerardo Blanco‐Fernández, Luís Muñoz‐Bellvis, Iago Justo, M I García-Domingo, Fabio Ausania, Elena Muñoz‐Forner, Alejandro Serrablo, Elena De Martín, Luis Iglesias Díez, Carmen Cepeda Franco, Luis Miguel Marín‐Gómez, J.M. Álamo-Martínez, C. Bernal Bellido, Sheila Pereira, Francisco José Calero-Castro, Imán Laga, Sandra Paterna, Esteban Cugat Andorrà, Constantino Fondevila, Diego López-Guerra, Inmaculada Gallego-Jiménez, J.J. Borrero-Martin, Miguel Ángel Gómez Bravo, José Tinoco, Luís Sabater,

Renal cell carcinoma treatment

Introduction: A positive surgical margin (R1 resection) is a relevant risk factor for local recurrence in patients with pancreatic ductal adenocarcinoma of the pancreas (PDAC). An intraoperative liquid biopsy (ILB) based on tumor cell mobilization could help to detect R1 resection intraoperatively. Objective: To evaluate the potential role of the intraoperative circulating tumor cells (CTCs) and cluster mobilization on the R0/R1 detection. Methods: Sixty-three patients with resectable PDAC of the head of the pancreas were prospective enrolled under the CETUPANC trial. Open pancreaticoduodenectomy (PD) was done in all patients. Intraoperative CTCs and clusters were determined during PD. Results: The overall rate of R1 resection was 34.9% (22/63 patients). Multivariate analysis showed that factors associated with R1 resection (AUC=0.920) were the presence of undifferentiated G3 tumor ( P =0.017), microscopic vascular invasion ( P =0.016), and the intraoperative increase of both free CTCs and clusters in portal vein determination from the beginning to the end of the surgery ( P =0.002 and P =0.005, respectively). A specific logistic regression model, including delta end to baseline CTCs and cluster mobilization to achieve a combined cut-off to detect R1 detection was calculated (AUC=0.799). The obtained R1-index based on ILB had 84% of sensitivity and 68% of specificity to detect R1 resection. Conclusions: The ILB based on the intraoperative mobilization of CTCs and clusters from the beginning to the end of the PD was a predictive factor to detect R1 resection in patients with PDAC.