TY - JOUR T1 - Clinical Prognostic Factors for Local Control and Survival After Irradiation of Grade II Gliomas JF - In Vivo JO - In Vivo SP - 3719 LP - 3722 DO - 10.21873/invivo.12220 VL - 34 IS - 6 AU - JASPAR WITTELER AU - STEVEN E. SCHILD AU - DIRK RADES Y1 - 2020/11/01 UR - http://iv.iiarjournals.org/content/34/6/3719.abstract N2 - Background/Aim: Personalized treatment for low-grade gliomas likely improves patient outcomes. This study aimed to identify predictors of local control and survival. Patients and Methods: Twenty-five patients irradiated for grade II gliomas were retrospectively analyzed. Irradiation was performed after biopsy (n=6) or incomplete resection (n=19). Nineteen patients received additional chemotherapy. Eight factors were analyzed, namely the number of glioma sites, cumulative maximum diameter, radiotherapy technique, Karnofsky performance score (KPS), gender, age, resection and chemotherapy. Results: On univariate analysis, trends for associations with local control were found for cumulative maximum diameter ≤43 mm (p=0.087) and age ≤45 years (p=0.065). In the Cox regression analysis, cumulative maximum diameter maintained significance (p=0.046). On univariate analysis, KPS 90-100 (p=0.039) and female gender (p=0.022) were significantly associated with better survival. In the Cox regression analysis, both KPS (p=0.039) and gender (p=0.016) were significant. Conclusion: Independent predictors of local control and survival were identified that can contribute to better treatment personalization. ER -