Dhruvajyoti Roy,1, Elsie Oppermann,2, Thomas J Vogl,3 Ibrahim Büdeyri,4 Dmitry Shapiro,4 Benjamin Struecker,4 Christian D Rolfo,5 Nada Abedin,6 Vladimir P Zharov,7 Andreas Schnitzbauer,8 Andreas Pascher,4 Wolf O Bechstein,2 Markus S Zimmermann,9, Mazen A Juratli4, 1Department of Breast Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX, USA; 2Department of General, Visceral and Transplant Surgery, Frankfurt University Hospital, Frankfurt, Germany; 3Department of Diagnostic and Interventional Radiology, Frankfurt University Hospital, Frankfurt, Germany; 4Department of General, Visceral and Transplant Surgery, Muenster University Hospital, Muenster, Germany; 5Center for Thoracic Oncology, The Tisch Cancer Institute, Mount Sinai Health System, New York City, NY, USA; 6Department of Internal Medicine I, Frankfurt University Hospital, Frankfurt, Germany; 7Arkansas Nanomedicine Center, University of Arkansas for Medical Sciences, Fayetteville, AR, USA; 8Department of Visceral, Oncological, and Transplant Surgery, University Hospital Knappschaftskrankenhaus, Bochum, Germany; 9Clinic for General and Visceral Surgery, Schön Clinic Neustadt, Neustadt in Holstein, GermanyThese authors contributed equally to this workCorrespondence: Mazen A Juratli, Department of General, Visceral and Transplant Surgery, Muenster University Hospital, Muenster, Germany, Email mazen.juratli@ukmuenster.deBackground: Hepatocellular carcinoma (HCC) is associated with high recurrence rates despite curative-intent liver resection. This necessitates improved prognostic tools and novel therapeutic strategies, including immune checkpoint inhibitors (ICIs). Circulating stem cells (CSCs) have emerged as potential prognostic biomarkers.Aim: To assess the prognostic relevance of CSCs expressing programmed death-ligand 1 (PD-L1+CSCs) in relation to recurrence-free survival (RFS) and overall survival (OS) in patients undergoing surgery for HCC.Methods: PD-L1+CSCs (CD45â/CD146+/ASGPR+/CD90+/PD-L1+) were analyzed in 27 HCC patients before surgery, immediately after surgery, and at 6 and 12 months after surgery using fluorescence-activated cell sorting and immunofluorescence microscopy. Tumor recurrence was monitored biannually through alpha-fetoprotein (AFP) measurements and imaging (CT/MRI). Control groups included patients with benign liver disease, non-HCC malignancies, and healthy donors.Results: Before surgery, 29.7% (8/27) of HCC patients had detectable PD-L1+CSCs. Postoperatively, their frequency initially declined to 22.3%, followed by a significant rise to 85% at six months and 88% at twelve months (both pâ¯
Roy et al. (Fri,) studied this question.