NF2 and Vestibular schwannoma: Despite the clinical overlap between non-NF2-related SWN and NF2-related SWN, it became clear quite early on that they are distinct clinical and genetic entities since patients with non-NF2-related SWN do not exhibit bilateral vestibular schwannomas, which is a hallmark feature of NF2-related SWN [30, 32, 62].