IDH1 and glioblastoma: The IDH-wild-type glioblastoma subgroups showed generally similar age central tendency parameters, with median and mean age values ranging from 60 to 62 and 59.3 to 63.7 years, respectively, for the most numerous subgroups, except for the Multi-RTK subgroup that showed significantly higher values, with a median of 68 and mean of 70 years (Figure 2A).