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INTRODUCTION Gliomas are one of the most common central nervous system tumors in adults. The Response Assessment Criteria in Neuro-Oncology (RANO) was developed to standardize the radiographic parameters used to assess therapeutic outcomes in glioma patients. A previous study has shown an association between therapeutic response based on RANO criteria and overall survival in glioma patients. However, the feasibility of applying RANO criteria in settings with limited resources has never been reported. This study aims to assess the feasibility of applying RANO criteria in clinical settings in Indonesia. This study also wants to see the role of the RANO criteria as a prognostic factor for gliomas in Indonesia. METHOD Data of glioma patients were retrospectively collected from Dharmais Cancer Hospital in Jakarta, Indonesia. Dharmais Cancer Hospital is the highest referral hospital for brain tumors in the country. Clinical and demographic data were collected from the medical record. RESULTS From 138 identified glioma patients from 2017 to May 2020, only 34 patients can be assessed using RANO criteria. The majority of the patients do not have post-surgical MRI that can be used as a baseline. Among 34 included patients, 38.2% were categorized as responsive, 23.5% as stable disease and 38.2% were categorized as progressive. Kaplan-Meier analysis showed that the median overall survival in the progressive group is significantly shorter than the median survival of responsive/stable group (21.2 vs. 57.5 months respectively, p=0.001). Multivariate cox regression analysis was performed to see the association of RANO criteria and other confounding variables (sex, age, glioma grade, glioma location, and therapy) with overall survival. The result showed that RANO progression was significantly associated with decreased survival (HR 18.38, p=0.045). CONCLUSION This retrospective analysis demonstrates the feasibility of applying RANO criteria in Indonesia and its association with overall survival.

neuro-oncology

NCOG-40. IMPLEMENTING RANO CRITERIA IN A RESOURCE-LIMITED SETTING AND ITS ASSOCIATION WITH OVERALL SURVIVAL OF GLIOMA PATIENTS: EXPERIENCE FROM A NATIONAL CANCER CENTER IN INDONESIA