RT Journal Article SR Electronic T1 A Neuroradiologist’s Guide to Operationalizing the Response Assessment in Neuro-Oncology (RANO) Criteria Version 2.0 for Gliomas in Adults JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP ajnr.A8396 DO 10.3174/ajnr.A8396 A1 Ellingson, Benjamin M. A1 Sanvito, Francesco A1 Cloughesy, Timothy F. A1 Huang, Raymond Y. A1 Villanueva-Meyer, Javier E. A1 Pope, Whitney B. A1 Barboriak, Daniel P. A1 Shankar, Lalitha K. A1 Smits, Marion A1 Kaufmann, Timothy J. A1 Boxerman, Jerrold L. A1 Weller, Michael A1 Galanis, Evanthia A1 Groot, John de A1 Gilbert, Mark R. A1 Lassman, Andrew B. A1 Shiroishi, Mark S. A1 Nabavizadeh, Ali A1 Mehta, Minesh A1 Stupp, Roger A1 Wick, Wolfgang A1 Reardon, David A. A1 Vogelbaum, Michael A. A1 van den Bent, Martin A1 Chang, Susan M. A1 Wen, Patrick Y. YR 2024 UL http://www.ajnr.org/content/early/2024/06/28/ajnr.A8396.abstract AB Radiographic assessment plays a crucial role in the management of patients with central nervous system (CNS) tumors, aiding in treatment planning and evaluation of therapeutic efficacy by quantifying response. Recently, an updated version of the Response Assessment in Neuro-Oncology (RANO) criteria (RANO 2.0) was developed to improve upon prior criteria and provide an updated, standardized framework for assessing treatment response in clinical trials for gliomas in adults. This article provides an overview of significant updates to the criteria including (1) the use of a unified set of criteria for high and low grade gliomas in adults; (2) the use of the post-radiotherapy MRI scan as the baseline for evaluation in newly diagnosed high-grade gliomas; (3) the option for the trial to mandate a confirmation scan to more reliably distinguish pseudoprogression from tumor progression; (4) the option of using volumetric tumor measurements; and (5) the removal of subjective non-enhancing tumor evaluations in predominantly enhancing gliomas (except for specific therapeutic modalities). Step-by-step pragmatic guidance is hereby provided for the neuroradiologist and imaging core lab involved in operationalization and technical execution of RANO 2.0 in clinical trials, including the display of representative cases and in-depth discussion of challenging scenarios.ABBREVIATIONS: BTIP = Brain Tumor Imaging Protocol; CE = Contrast-Enhancing; CNS = Central Nervous System; CR = Complete Response; ECOG = Eastern Cooperative Oncology Group; HGG = High-Grade Glioma; IDH = Isocitrate Dehydrogenase; IRF = Independent Radiologic Facility; LGG = Low-Grade Glioma; KPS = Karnofsky Performance Status; MR = Minor Response; mRANO = Modified RANO; NANO = Neurological Assessment in Neuro-Oncology; ORR = Objective Response Rate; OS = Overall Survival; PD = Progressive Disease; PFS = Progression-Free Survival; PR = Partial Response; PsP = Pseudoprogression; RANO = Response Assessment in Neuro-Oncology; RECIST = Response Evaluation Criteria In Solid Tumors; RT = Radiation Therapy; SD = Stable Disease; Tx = Treatment.