LOY, detected in nine cases (9.7%), was significantly associated with a higher World Health Organization tumor grade (grade 2: 55.6% versus 14.3%; grade 1: 44.4% versus 85.7%; p = 0.009) and loss of the NF2 gene-encoded protein, moesin-ezrin-radixin-like protein (merlin) (loss: 88.9% versus 50.0%; retained: 11.1% versus 50.0%; p = 0.035). Here, NF2 is linked to neoplasm.