LZTR1 and schwannomatosis: Schwannomatosis not related to NF2 can result from mutations in tumor suppressor genes on chromosome 22 including but not limited to the SWI/SNF-related BAF chromatin remodeling complex subunit B1 (SMARCB1) and leucine zipper like post-translational regulator 1 (LZTR1 genes; Tamura, 2021).