Characteristics of somatic mosaic and sporadic non-mosaic NF2 patients
| Characteristic | Somatic mosaic | Sporadic non-mosaic | p |
| No of patients | 13 | 86 | |
| Age at onset of symptoms, years, mean (SE) | 26.5 (2.4) | 18.7 (1.1) | 0.012 |
| Age at diagnosis, years, mean (SE) | 33.6 (2.7) | 24.7 (1.3) | 0.013 |
| Germline mutation type (%) | 0.055 | ||
| Frameshift or nonsense | 92.3 | 62.8 | |
| Other | 7.7 | 37.2 | |
| Vestibular schwannomas (%) | 0.391 | ||
| None or unilateral | 30.0 | 12.9 | |
| Bilateral | 70.0 | 87.1 | |
| Spinal tumours (%) | 0.733 | ||
| Absent | 30.8 | 24.4 | |
| Present | 69.2 | 75.6 | |
| Intracranial meningiomas (%) | 0.773 | ||
| Absent | 46.2 | 41.9 | |
| Present | 53.8 | 58.1 | |
| Intracranial meningiomas, number, mean (SE) | 1.5 (1.0) | 1.5 (0.2) | 0.993 |