The recurrent translocation breakpoint on chromosome 22 of neuroepithelioma has 
been localized between two probes, D22S1 and D22S15, by both in situ 
hybridization and somatic cell hybrids. These two probes have further been shown 
to be genetically linked at theta = 0.0 and a lod score of 5.3. The two probes 
were unaffected by a partial deletion of the chromosome 22 long arm of a 
meningioma, showing that the meningioma locus is distal to that of the 
neuroepithelioma.