Comparison between IFA and AFA
| Parameters | AFA | IFA |
|---|---|---|
| Etiology | Mutations AAAS 12q13 | Multifactorial Genetic? Environment? |
| Disease | Multisystemic | Esophagus |
| Frequency | 5 times | 1 time |
| Consanguinity | 73.2% | 15.2% |
| Disease transmission | Horizontal only siblings | Horizontal/vertical siblings |
| Prognosis | Autonomic abnormalities Adrenal insufficiency | Good |
| PD | Low long-term remission | |
?: not proven as an etiological factor (remains hypothetical)