{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T12:11:04Z","timestamp":1790079064797,"version":"4.0.1"},"reference-count":26,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2026,9,20]],"date-time":"2026-09-20T00:00:00Z","timestamp":1789862400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Clin. Med.","JCM"],"abstract":"<jats:p>Background\/Objectives: Acute kidney injury (AKI) is a frequent complication following cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (CRS-HIPEC). The association between preoperative inflammatory and immune-nutritional indices and postoperative AKI after CRS-HIPEC remains unclear. We aimed to investigate whether these prespecified candidate preoperative markers are associated with postoperative AKI in patients undergoing CRS-HIPEC. Methods: This retrospective single-center study included 87 patients who underwent CRS-HIPEC between October 2022 and April 2025. All received intraoperative cisplatin and mitomycin C. AKI was defined according to Kidney Disease: Improving Global Outcomes serum creatinine criteria. Preoperative neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, systemic immune-inflammation index, pan-immune-inflammation value, systemic inflammation response index, and C-reactive protein\u2013albumin\u2013lymphocyte (CALLY) index were calculated from routine laboratory parameters. Each candidate marker was evaluated in a separate model adjusted for age and sex, and then in a second model additionally adjusted for baseline estimated glomerular filtration rate. Discriminatory performance was assessed using receiver operating characteristic analysis. The CALLY index was calculated using albumin in g\/dL, lymphocyte count in \u00d7109\/L, and C-reactive protein in mg\/L. Results: AKI developed in 24 patients (27.6%). In-hospital mortality was higher in patients with AKI than in those without AKI (25.0% vs. 1.6%; p = 0.002). A higher log10-transformed CALLY index remained associated with lower odds of AKI after adjustment for age and sex (adjusted OR, 0.276; 95% CI, 0.113\u20130.673; p = 0.005). The CALLY index had the numerically highest AUC among the evaluated indices, with moderate discriminatory performance (AUC, 0.708; 95% CI, 0.579\u20130.836). A data-derived exploratory cutoff of \u22641.640 yielded 79.2% sensitivity and 63.5% specificity. Conclusions: In this selected retrospective cohort of patients without established chronic kidney disease, a lower preoperative CALLY index was associated with postoperative AKI and showed moderate discrimination as an individual marker. The data-derived threshold should be considered exploratory and requires independent validation before clinical application.<\/jats:p>","DOI":"10.3390\/jcm15187308","type":"journal-article","created":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T11:09:35Z","timestamp":1790075375000},"page":"7308","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Association of the Preoperative CALLY Index with Acute Kidney Injury After Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy: A Comparison with Other Inflammatory and Immune-Nutritional Indices"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7146-4828","authenticated-orcid":false,"given":"Hatice","family":"\u015eahin","sequence":"first","affiliation":[{"name":"Division of Nephrology, Department of Internal Medicine, Ankara Etlik City Hospital, Ankara 06170, 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