%0 Journal Article %A Mirian, Christian %A Jensen, Lasse Rehné %A Hoffmann, Adam Gorm %A Juratli, Tareq A %A Maier, Andrea Daniela %A Lindner, Pernilla %A Broechner, Anders %A Torp, Sverre H %A Shih, Helen A %A Morshed, Ramin A %A Young, Jacob S %A Magill, Stephen T %A Stummer, Walter %A Spille, Dorothee Cäcilia %A Brokinkel, Benjamin %A Proescholdt, Martin %A Kuroi, Yasuhiro %A Gousias, Konstantinos %A Simon, Matthias %A Prat-Acin, Ricardo %A Goutagny, Stéphane %A Wach, Johannes %A Güresir, Erdem %A Yamamoto, Junkoh %A Kim, Young Zoon %A Lee, Joo Ho %A Kim, Daniel W %A Koshy, Matthew %A Cannon, Donald M %A Shrieve, Dennis C %A Suh, Chang-Ok %A Chang, Jong Hee %A Kamenova, Maria %A Straumann, Sven %A Soleman, Jehuda %A Eyüpoglu, Ilker Y %A Catalan, Tony %A Lui, Austin %A Theodosopoulos, Philip V %A McDermott, Michael W %A Góes, Pedro %A Wang, Fang %A Souhami, Luis %A Guiot, Marie-Christine %A Csonka, Tamás %A Endo, Toshiki %A Gupta, Tejpal %A Patel, Akash J %A Klisch, Tiemo J %A Kim, Jun Won %A Maiuri, Francesco %A Barresi, Valeria %A Tabernero, María Dolores %A Skyrman, Simon %A Krause, Mechthild %A Law, Ian %A Kristensen, Bjarne Winther %A Munch, Tina Nørgaard %A Meling, Torstein %A Fugleholm, Kåre %A Blanche, Paul %A Mathiesen, Tiit %T Fractionated radiotherapy adjuvant to surgery of WHO-2 meningioma with and without gross total resection: a multicenter, retrospective cohort study of 1,452 patients. %J Journal of neuro-oncology %V 176 %N 3 %@ 0167-594X %C Dordrecht [u.a.] %I Springer Science + Business Media B.V %M DKFZ-2026-00319 %P 201 %D 2026 %Z #DKTKZFB26# / #NCTZFB26# %X Purpose:The role of adjuvant fractionated radiotherapy (aFRT) after gross total resection (GTR) of WHO-2 meningiomas remains unclear. We aimed to estimate the effect of aFRT on recurrence risk and survival following GTR and subtotal resection (STR).Methods:We analyzed 1452 patients with WHO-2 from our international, multicenter database (followed between 1989 and 2019). Outcomes were recurrence (10-year follow-up) and death (5-year follow-up). Risk estimates were obtained using competing risks and survival analysis. Average treatment effects were estimated by G-computation, adjusted for potential confounding by age, sex, Simpson grade, Ki-67 proliferation index, location, country group (universal healthcare or not), and year of treatment initiation. The robustness of findings was examined through sensitivity analyses.Results:Overall, 276 of 1452 patients (19.0 %K Atypical meningioma (Other) %K Meningioma (Other) %K Progression (Other) %K Radiotherapy (Other) %K Recurrence (Other) %K Resection (Other) %F PUB:(DE-HGF)16 %9 Journal Article %$ pmid:41661453 %R 10.1007/s11060-025-05349-7 %U https://inrepo02.dkfz.de/record/309806