Abstract
Purpose: We aimed to compare treatment results in and outside of a randomized trial and to confirm factors influencing outcome in a large retrospective cohort of nonmetastatic medulloblastoma treated in Austria, Switzerland and Germany. Methods and Materials: Patients with nonmetastatic medulloblastoma (n = 382) aged 4 to 21 years and primary neurosurgical resection between 2001 and 2011 were assessed. Between 2001 and 2006, 176 of these patients (46.1%) were included in the randomized HIT SIOP PNET 4 trial. From 2001 to 2011 an additional 206 patients were registered to the HIT 2000 study center and underwent the identical central review program. Three different radiation therapy protocols were applied. Genetically defined tumor entity (former molecular subgroup) was available for 157 patients. Results: Median follow-up time was 7.3 (range, 0.09-13.86) years. There was no difference between HIT SIOP PNET 4 trial patients and observational patients outside the randomized trial, with 7 years progression-free survival rates (PFS) of 79.5% ± 3.1% versus 78.7% ± 3.1% (P =.62). On univariate analysis, the time interval between surgery and irradiation (≤ 48 days vs ≥ 49 days) showed a strong trend to affect PFS (80.4% ± 2.2% vs 64.6% ± 9.1%; P =.052). Furthermore, histologically and genetically defined tumor entities and the extent of postoperative residual tumor influenced PFS. On multivariate analyses, a genetically defined tumor entity wingless-related integration site-activated vs non-wingless-related integration site/non-SHH, group 3 hazard ratio, 5.49; P =.014) and time interval between surgery and irradiation (hazard ratio, 2.2; P =.018) were confirmed as independent risk factors. Conclusions: Using a centralized review program and risk-stratified therapy for all patients registered to the study center, outcome was identical for patients with nonmetastatic medulloblastoma treated on and off the randomized HIT SIOP PNET 4 trial. The prognostic values of prolonged time to RT and genetically defined tumor entity were confirmed.
| Originalsprache | Englisch |
|---|---|
| Zeitschrift | Advances in Radiation Oncology |
| Jahrgang | 5 |
| Ausgabenummer | 6 |
| Seiten (von - bis) | 1158-1169 |
| Seitenumfang | 12 |
| DOIs | |
| Publikationsstatus | Veröffentlicht - 01.11.2020 |
Fördermittel
Disclosures: Dr Dietzsch reports grants from the German Childhood Cancer Foundation (Deutsche Kinderkrebsstiftung) during the conduct of the study. Dr Budach reports personal fees from Merck Co, Germany, personal fees from Varian Co, personal fees from Accuray Co, personal fees from Bristol-Myers Co, personal fees from Seattle Genetics Co, personal fees from Novocure Co, and personal fees from Sennewald Co outside the submitted work. Dr Bison reports personal fees from Deutsche Kinderkrebsstiftung (German Childhood Foundation) during the conduct of the study and personal fees from Deutsche Kinderkrebsstiftung (German Childhood Foundation) outside the submitted work. Dr Mynarek reports grants from the German Childhood Cancer Foundation (Deutsche Kinderkrebsstiftung) during the conduct of the study. The authors thank all attending physicians of the participating centers for their meticulous documentation and the “Deutsche Kinderkrebsstiftung“ (German Childhood Cancer Foundation) and “Steirische Kinderkrebshilfe” (Styrian Childhood Cancer Foundation) for the support of the HIT network.
UN SDGs
Dieser Output leistet einen Beitrag zu folgendem(n) Ziel(en) für nachhaltige Entwicklung
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SDG 3 – Gesundheit und Wohlergehen
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