Habe gerade die Originalpublikation hierzu gefunden, die Ulrich in einem anderen Thread gepostet hat. Hmm schwierig zu sagen, werdens mal mit dem Onkologen besprechen.
Ich danke euch für eure schnellen Antworten und wünsche Euch bzw. uns allen viel Kraft, die wir früher oder später wohl alle brauchen.
Gruß und einen schönen Sonntag, Philipp
Alternative schedules of adjuvant temozolomide in glioblastoma multiforme: A 6-year experience.
Sub-category: CNS Tumors Category: Central Nervous System Tumors
Meeting: 2006 ASCO Annual Meeting
Printer Friendly E-Mail Article Abstract No: 1511 Citation: Journal of Clinical Oncology, 2006 ASCO Annual Meeting Proceedings Part I. Vol 24, No. 18S (June 20 Supplement), 2006: 1511 Author(s): L. Buttolo, F. Giunta, V. D. Ferrari, S. Grisanti, G. Marini, P. Mortini
Abstract: Background: Temozolomide (TMZ) is an oral alkylating agent with proven efficacy in the therapy of glioblastoma multiforme (GBM). The activity of TMZ is drug-exposure dependent, however dosages are primarily limited by myelotoxicity. In the attempt to increase survival while limiting toxicity, we treated GBM patients (pts) with one of 3 alternative adjuvant TMZ schedules, including a low-dose daily regimen.
Methods: We assessed the overall survival and the development of grade 3-4 myelotoxicity in pts with GBM who were treated in our centre (November 1998-October 2005), following surgery, with one of the following TMZ schedules: standard schedule (SS: 200-300 mg/m2 × 5 days, every 28 days); extended schedule (ES: 150 mg/m2 × 7 days every 15 days); daily schedule (DS: 75 mg/m2 daily). Pts were treated until death or tumour progression. The analysis of survival was based on the Kaplan-Meier (KM) and the Cox models. Adverse events were graded according to NCICTC 3.0.
Results: We evaluated 117 pts (73 m, 44 f, avg. age 57 yrs, 53% received radiotherapy, RT) with histologically diagnosed gliomas (GBM=92.3%) treated with TMZ SS (tot pts=48, RT pts=22, no. cycles: 1÷33, avg 6) or ES (tot pts=35; RT pts=19, no. cycles: 1÷43, avg 16) or DS (tot pts=34; RT pts=21, days of treatment: 25÷671, avg 212). The overall survival significantly differed among the 3 schedules (KM), with DS providing the best outcome (p=0.0357, log-rank). Median survival time was markedly increased in DS pts (DS=29.47 months; ES=15.73 months; SS=11.90 months) as well as the survival rate at 2 yrs after diagnosis (DS=51%; ES=30%; SS=21%). DS, but not ES, significantly reduced the mortality hazard ratio (HR) compared to SS (Cox: HR=0.494; IC95% 0.253-0.966, p=0.039). Grade 3-4 myelotoxicity (leukopenia, LP; neutropenia, NP; thrombocytopenia,TP) occurred less frequently with DS (NP=2.9%; TP=2.9%; any=5.9%) than with ES (LP=11.4%; NP=14.3%; TP=17.1%; any=28.6%) and SS (LP=14.6%; NP=8.3%; TP=20.8%; any=22.9%).
Conclusions: In our experience with adjuvant TMZ in GBM, a continuous daily dose of 75 mg/m2 was on the whole more advantageous than a standard monthly or a biweekly regimen, as it resulted in the highest overall survival with the lowest hematologic toxicity.