Prognostic Significance of GLIM‐Defined Malnutrition in Patients With Resectable Pancreatic Adenocarcinoma Following Upfront Surgery

ABSTRACT Aim Regarding the resectability of pancreatic adenocarcinoma (PDAC), not only anatomical factors but also biological and conditional factors have come to be considered. This study examined the impact of the Global Leadership Initiative on Malnutrition (GLIM) criteria on prognosis after resection of anatomically resectable PDAC. Methods The medical records of consecutive patients who underwent resection for resectable PDAC between January 1, 2014, and December 31, 2022, were retrospectively reviewed. Patients were classified as normal, moderately, or severely malnourished according to the GLIM criteria. Results In total, 194 patients were included in the analysis. According to the GLIM criteria, 61 (31.4%), 49 (25.2%), and 84 (42.3%) patients were normal, moderately, and severely malnourished, respectively. Patients with malnutrition had shorter overall, recurrence‐free, and disease‐specific survival (OS, RFS, and DSS) than normal patients (OS, normal vs. moderate, p = 0.015; normal vs. severe, p < 0.001; RFS, normal vs. moderate p = 0.012, normal vs. severe, p < 0.001; DSS, normal vs. moderate, p = 0.023; normal vs. severe, p < 0.001). In multivariate analysis regarding OS using all factors, moderate or severe malnutrition according to the GLIM criteria (p = 0.007), performance status (p = 0.086), preoperative diabetes (p = 0.017), tumor diameter ≥ 3 cm (p = 0.002), lymph node metastasis (p < 0.001), and postoperative adjuvant therapy (p = 0.027) were independent prognostic factors. In multivariate analysis using preoperative factors, malnutrition according to the GLIM criteria remained a significant prognostic factor (p = 0.003). Conclusion The GLIM criteria are effective prognostic predictors in patients with resectable PDAC undergoing upfront surgery. Preoperative nutritional assessment using these criteria may contribute to determining treatment plans for resectable PDAC.