An important prognostic factor is the loss of chromosomal arm 1p in meningiomas, as ‘oncogenic phylogeny models propose 1p loss as the first CNV after monosomy 22q in NF2‐mutant, high‐grade meningiomas, with rare cases showing 1p loss in the absence of 22q loss (...)’ [15]. Here, NF2 is linked to meningioma.