High control rates of proton- and carbon-ion-beam treatment with intensity-modulated active raster scanning in 101 patients with skull base chondrosarcoma at the Heidelberg Ion Beam Therapy Center.
Abstract | BACKGROUND: The current study compares the results of irradiation with protons and irradiation with carbon ions via a raster scan technique in patients with G1 and G2 skull base chondrosarcomas. METHODS: Between 2009 and 2014, a total of 101 patients (40 men and 61 women) with a median age of 44 years (range, 19-77 years) were irradiated with carbon ions (79 patients) or protons (22 patients) via a raster scan technique at the Heidelberg Ion Beam Therapy Center. The median total dose was 60 Gy (relative biological effectiveness [RBE]) at 3 Gy per fraction for carbon ions and 70 Gy (RBE) at 2 Gy per fraction for protons. The median boost planning target volume was 38 cm3 (range, 8-133 cm3 ). Overall survival (OS) and local control (LC) were evaluated with the Kaplan-Meier method. RESULTS: The median follow-up period was 40 months (range, 0.8-78.1 months). At the start of the irradiation, all patients had residual macroscopic tumors. Five patients (5%) developed a local recurrence during the follow-up. The 1-, 2-, and 4-year LC rates were 100%, 100%, and 100%, respectively, for protons and 98.6%, 97.2%, and 90.5%, respectively, for carbon ions. The OS rates during the same periods of time were 100%, 100%, and 100%, respectively, for protons and 100%, 98.5%, and 92.9%, respectively, for carbon ions. An age ≤ 44 years was associated with a trend for a better outcome. No toxicity worse than Common Toxicity Criteria grade 3 was observed after treatment. CONCLUSIONS:
|
Authors | Matthias Mattke, Kira Vogt, Nina Bougatf, Thomas Welzel, Jan Oelmann-Avendano, Henrik Hauswald, Alexandra Jensen, Malte Ellerbrock, Oliver Jäkel, Thomas Haberer, Klaus Herfarth, Jürgen Debus, Matthias Uhl |
Journal | Cancer
(Cancer)
Vol. 124
Issue 9
Pg. 2036-2044
(05 01 2018)
ISSN: 1097-0142 [Electronic] United States |
PMID | 29469932
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
|
Copyright | © 2018 American Cancer Society. |
Chemical References |
- Carbon Radioisotopes
- Protons
|
Topics |
- Adult
- Age Factors
- Aged
- Carbon Radioisotopes
- Chondrosarcoma
(mortality, radiotherapy)
- Dose Fractionation, Radiation
- Female
- Follow-Up Studies
- Germany
(epidemiology)
- Heavy Ion Radiotherapy
(adverse effects, instrumentation, methods)
- Humans
- Kaplan-Meier Estimate
- Male
- Middle Aged
- Neoplasm Recurrence, Local
(epidemiology, prevention & control)
- Protons
- Radiation Injuries
(epidemiology, etiology)
- Radiotherapy, Intensity-Modulated
(adverse effects, instrumentation, methods)
- Retrospective Studies
- Skull Base Neoplasms
(mortality, radiotherapy)
- Survival Rate
- Treatment Outcome
- Young Adult
|
|
Join CureHunter, for free Research Interface BASIC access!
Take advantage of free CureHunter research engine access to explore the best drug and treatment options for any disease.
Find out why thousands of doctors, pharma researchers and patient activists
around the world use CureHunter every day.
Realize the full power of the drug-disease research graph!
|