NF2 and Non-polyposis Turcot syndrome: Although their increased incidence has been reported in certain cancer‐prone diseases, such as neurofibromatosis type 2 (NF2), multiple endocrine neoplasia type 1 (MEN1) syndrome, and Turcot syndrome (Campian & Gutmann, 2017; de Bont et al., 2008), they mostly occur as sporadic events with a poorly characterized genetic risk.