Posted 2 months ago by Wales Gene Park
The study PNET 5 MB has been designed for children with medulloblastoma of standard risk (according to the risk-group definitions which have been used so far; e.g. in PNET 4). With the advent of biological parameters for stratification into clinical medulloblastoma trials, the ß-catenin status will be the only criterion according to which study patients will be assigned to either treatment arm PNET 5 MB - LR or to PNET 5 MB - SR, respectively. The initial diagnostic assessments (imaging, staging, histology, and tumor biology) required for study entry are the same for both treatment arms.
Posted 2 years ago by Wales Gene Park
The PNET 5 study has been designed for children and young people aged from 3 yrs to 22 yrs with standard risk medulloblastoma who have undergone surgery to remove the primary tumour. The presence of biological markers of the WNT medulloblastoma disease subgroup (mutation of the beta¬catenin gene, or presence of the beta¬catenin protein and loss of chromosome 6) and aged < 16 defines the patient as Low Risk biological profile. The presence of the WNT markers and aged 16 and over, or the absence of the WNT markers defines the patient as Standard Risk biological profile. Low risk group patients will receive reduced doses of radiotherapy (compared to previous study PNET 4) to the brain and spine every day for 10 days, together with boost doses to the primary tumour for a further 20 days. Maintenance chemotherapy will consist of 6 cycles of Regimen A alternating with 6 cycles...