Chemotherapy with or without surgery for locally advanced or borderline resectable pancreatic ductal adenocarcinoma: A retrospective multicenter international study.

Authors

null

Marino Venerito

Universitätsklinikum Magdeburg, Magdeburg, Germany

Marino Venerito , Danmei Zhang , Selina Becht , Juliane Schütz , ChristophDaniel Steup , Ulli Simone Bankstahl , Timorshah Habibzada , Farsaneh Sadeghlar , Marco De Scordilli , Elena Ongaro , Sebastian Krug , Maria A Gonzalez-Carmona , Thorsten Goetze , Fabian Finkelmeier , Thomas Jens Ettrich , Renato Cannizzaro , Klara Dorman , Caspar Franck

Organizations

Universitätsklinikum Magdeburg, Magdeburg, Germany, University Hospital Munich - Grosshadern, München, Germany, University Hospital Munich - Grosshadern, Munich, Germany, Klinik für Innere Medizin I, Universitätsklinikum Ulm, Ulm, Germany, University Hospital, Johann Wolfgang Goethe-University Frankfurt, Frankfurt Am Main, Germany, Institute of Clinical Cancer Research (IKF), Krankenhaus Nordwest, UCT-University Cancer Center, Frankfurt Am Main, Germany, Universitätsklinikum Bonn, Bonn, Germany, Dipartimento di Oncologia Medica Oncologia Medica e Prevenzione Oncologica Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, Aviano, Italy, Department of Medical Oncology, Centro di Riferimento Oncologico (CRO), IRCCS,, Aviano, Italy, Martin Luther University Halle-Wittenberg, Halle, Germany, Krankenhaus Nordwest, University Cancer Center Frankfurt and Frankfurter Institut für Klinische Krebsforschung IKF GmbH am Krankenhaus Nordwest, Frankfurt Am Main, Germany, University Hospital, Johann Wolfgang Goethe-University Frankfurt, Frankfurt, Germany, Universitätsklinikum Ulm, Ulm, Germany, IRCCS-CRO Aviano, Oncologic Gastroenterology, Aviano, Italy, Department of Medicine III and Comprehensive Cancer Center, University Hospital, LMU Munich and German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany

Research Funding

No funding sources reported

Background: Current clinical guidelines recommend surgery for patients with locally advanced (LA)/borderline resectable (BR) pancreatic ductal adenocarcinoma (PDAC) who achieve disease control after induction therapy. However, the additional survival benefit of surgery in these patients is unknown. Methods: In this multicenter international retrospective cohort study, consecutive patients with BR/LA PDAC who achieved disease control after three to six months of induction therapy (combination chemotherapy or chemoradiotherapy) between January 2014 and July 2021 were retrospectively identified at 8 centers in Germany and Italy. Resectability status was determined by consensus in a multidisciplinary tumor board based on imaging findings, serum CA19-9, performance status and clinical response. Patient characteristics, progression-free survival (PFS) and overall survival (OS) were estimated using the Kaplan-Meier method. Cox regression analysis was used to compare survival data. Results: A total of 138 patients who achieved disease control with induction therapy were analyzed. The median age at diagnosis was 66 years (range 45-82) and 43% of patients were female. 73 patients underwent surgery and 65 patients did not (median age 64 and 69 years, respectively, p = 0.02). Median OS was 20.0 months (95%CI 16.1-23.8) in the surgery group and 18.0 months (95%CI 13.6-22.4) in the nonsurgery group (hazard ratio for death, 0.90; 95%CI, 0.63 to 1.29, p = 0.57). Median PFS was 14.0 months (95%CI 8.9-19.1) in the surgery group and 15.0 months (95%CI 11.7-18.3) in the nonsurgery group (hazard ratio for disease progression, 1.04; 95%CI, 73 to 1,47, p = 0.83). The 2-year survival rates in the surgery and nonsurgery groups were 32.9% and 40.0%, respectively, with an overall odds ratio of 0.74 (95% CI: 0.37-1.47). Conclusions: In our multicenter international retrospective analysis, additional surgery did not confer a survival advantage to patients with BR/LA PDAC who achieved disease control with induction therapy.

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Abstract Details

Meeting

2024 ASCO Annual Meeting

Session Type

Publication Only

Session Title

Publication Only: Gastrointestinal Cancer—Gastroesophageal, Pancreatic, and Hepatobiliary

Track

Gastrointestinal Cancer—Gastroesophageal, Pancreatic, and Hepatobiliary

Sub Track

Pancreatic Cancer - Local-Regional Disease

Citation

J Clin Oncol 42, 2024 (suppl 16; abstr e16352)

DOI

10.1200/JCO.2024.42.16_suppl.e16352

Abstract #

e16352

Abstract Disclosures