Klassifisering av familiær feokromocytom.
| Syndrome | Gene | locus | Eksoner | Phaeo | Malignitet (malignitet) |
| Multipel endokrin neoplasi type 2a / b | RET | 12q 11.2 | 21 | 50% | 3-5% |
| Von Hippel-Lindau syndrom | VHL | 3p 25-26 | 3 | 20% | 5% |
| Recklinghausens sykdom (nevrofibromatose type I) | Nf1 | 17q 11.2 | 59 | 2% | 10% |
| Paragangliomasyndrom type 1 | SDHD | 11q 23 | 4 | 4-7% | 23% |
| Paragangliomasyndrom type 2 | SDHB | 1p 36 | 8 | 3-10% | 50% |
