title: [Medulloblastoma therapy studies MBL 80 and MED 84 of the Society of Pediatric Oncology and the Société Internationale d'Oncologie Pédiatrique (SIOP)].
abstract: In both trials the principle of "sandwich" chemotherapy (administered between surgery and postoperative irradiation) is studied in medulloblastoma. GPO-MBL 80 was essentially a one-arm trial; results after a mean observation period of 3 years show an expected event-free survival rate of 46% at 6 years. "Maintenance" chemotherapy with CCNU and vincristine did not further improve the results. Preliminary results of the joint, prospective, randomised forearm SIOP-GPO trial MED 84 are presented. It is apparently too early to answer any of the two main questions asked by this trial: a) is "sandwich" chemotherapy (as administered) of any value? b) can radiotherapy doses to the supratentorial area and to the spine be moderately reduced in so-called "low risk" patients without compromising long-term results? Thus far, we cannot observe any prognostic influence of the "classical" risk factors as established by other studies.
authors.forename: M
authors.initials: M
authors.lastname: Neidhardt
authors.forename: C C
authors.initials: CC
authors.lastname: Bailey
authors.forename: A
authors.initials: A
authors.lastname: Gnekow
authors.forename: P
authors.initials: P
authors.lastname: Kleihues
authors.forename: J
authors.initials: J
authors.lastname: Michaelis
authors.forename: S
authors.initials: S
authors.lastname: Wellek
mesh_terms: D000293:Adolescent; D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D002528:Cerebellar Neoplasms / Q000188:drug therapy* / Q000601:surgery; D002648:Child; D002675:Child, Preschool; D002986:Clinical Trials as Topic; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D007223:Infant; D002955:Leucovorin / Q000008:administration & dosage; D008297:Male; D008527:Medulloblastoma / Q000188:drug therapy* / Q000601:surgery; D008727:Methotrexate / Q000008:administration & dosage; D011344:Procarbazine / Q000008:administration & dosage; D011897:Random Allocation; D014750:Vincristine / Q000008:administration & dosage
chemical_list: D011344:Procarbazine; D014750:Vincristine; D002955:Leucovorin; D008727:Methotrexate
vernacular_title: Die Medulloblastom-Therapiestudien MBL 80 und MED 84 der Gesellschaft für Pädiatrische Onkologie (GPO) und der Société Internationale d'Oncologie Pédiatrique (SIOP).