HIT 2000

It is the aim of this multicenter therapy optimising trial HIT 2000 to offer all patients up to an age of 21 years with a intracranial localized Medulloblastoma / supratentorial CNS-PNET or Ependymoma the today best known risk-adapted standard therapy in Germany and Austria.

Primary objectives are the achievement of a comparable high survival rate of the patients through intensification of the chemotherapy and / or irradiation, through risk adapted therapy in exact defined risk-groups and through better quality control of surgery,
radiotherapy and chemotherapy.
Further objective is a comparable low rate of late effects through the abandonment of the irradiation or reduction of the cranio-spinal irradiation dose with children younger than 4 years with a Medulloblastoma.

For the acquisition of data to late effects and quality of life different concomitant studies are performed.

Objectives of the interim registry

The main objective of the registry until the opening of the new trials is the quality assurence through reference expertise of the different examinations and to collect epidemiological data.
In addition the collection of biological material (tumourtissue, cerebral fluid and blood) shall be continued to assure the continuation of concomittant studies. Therefore therapy data should be furthermore collected.

To reach the best and most individual therapy for every patient, concerning the risk of relapse and late effects, the therapy will be stratified regarding histology (Medulloblastoma, supratentorial CNS-PNET, Ependymoma WHO II° and Ependynoma WHO III°), age (4 years) and stage of the disease (MO versus M1 versus M2-M4) into 10 relevant therapy groups.

In the prospective randomised phase-III trial for patients from 4-21 years with local Medulloblastoma, conventional radiation therapy will be compared to hyperfractionated radiation therapy. The aims of this randomized trial were to compare progression-free survival and late effects after the two different radiation schedules. Recrutation into the experimental arm was closed on 31.12.2006

For children with local supratentorial CNS-PNET an amendment was published in 2004.

Therapy recommandations after the closure of the trial

In the appendix of the registry the therapy recommandations are enclosed. They result of the evaluated therapy concepts of HIT 2000.
In some therapy arms the therapy follows the amendments. In some therapy arms, where the amandments brought no advantage, the therapy will follow the original concept. Theses rcommandations were decided after the the last interim analysis of HIT 2000 and are not obligatory.

• Medulloblastoma and Medulloblastoma-Variations (desmoplastic Medulloblastoma, anaplastic Medulloblastoma, large-cell Medulloblastoma, Medullomyoblastoma, melanotic Medulloblastoma)
• supratentorial CNS-PNET (primitive neuroectodermal Tumour)
• Ependymoblastoma
• Pineoblastoma
• cerebral Neuroblastoma
• Ependymoma WHO II° and WHO III°
• intracranial Sarkoma
• Medulloepithelioma
• spinal PNET (primitive neuroectodermal Tumours)
• spinal Ependymoma WHO II° and III°