Patients who did not meet criteria for NF2 but had one additional non-VS schwannoma or meningioma in addition to a unilateral VS (N = 28) were analyzed separately from the included patient population in order to compare these patients with suspected NF2, but not meeting strict criteria, with the general VS patient population, with plan to exclude them from final analysis if significant differences in outcomes were found (22). This evidence concerns the gene NF2 and meningioma.