Table 1. Results of BRAF Genotyping by Histological Subtype.
| Histological subtype | Total | BRAFV600E | |
|---|---|---|---|
| N=69 | No. | % | |
| Tumors derived from Langerhans cells | 48 | 23 | 48 |
| Langerhans cell histiocytosis | 42 | 22 | 52 |
| Solitary/unifocal | 25 | 12 | 48 |
| Multi-system | 13 | 7 | 54 |
| Disseminated/visceral | 4 | 3 | 75 |
| Langerhans cell sarcoma | 6 | 1 | 17 |
| Tested Non-Langerhans cell entities | 21 | 0 | 0 |
| Dendritic cell sarcoma | 3 | 0 | 0 |
| Juvenile Xanthogranuloma | 3 | 0 | 0 |
| Rosai-Dorfman Disease | 4 | 0 | 0 |
| Granular Cell Tumor | 11 | 0 | 0 |
Abbreviations: N, number of cases, No., number of mutated cases.