AFP alpha-fetoprotein
Beta-HCG beta-human chorionic gonadotropin
CI confidence interval
CSF cerebral spinal fluid
HI healthcare-related interval
IC-GCTs intracranial germ cell tumours
IQR interquartile ranges
MRI magnetic resonance image
NGGCTs non-germinomatous germ cell tumours
OR odds ratio
OS overall survival
PFS progression-free survival
PI patient-related interval
PLAP placental alkaline phosphatase
RICP raised intracranial pressure
TDI total diagnostic interval
TI tumour-related interval
TYA teenage and young adult
WVI whole ventricular field irradiation