| Disorder | Symbol(s) | OMIM | Location |
| Alzheimer disease-7 (2) | AD7 | 606187 |
10p13 |
| Amelogenesis imperfecta, hypomaturation-hypoplastic type, with taurodontism, 104510 (3) | DLX3, TDO, AI4 | 600525 |
17q21.3-q22 |
| Amelogenesis imperfecta, hypoplastic/hypomaturation type, 301200 (3) | AMELX, AMG, AIH1, AMGX | 300391 |
Xp22.3-p22.1 |
| Amelogenesis imperfecta, type 3, 130900 (3) | FAM83H, AI3 | 611927 |
8q24.3 |
| Amelogenesis imperfecta, type IB, 104500 (3) | ENAM, AIH2, AI1C | 606585 |
4q21 |
| Amelogenesis imperfecta, type IC, 204650 (3) | ENAM, AIH2, AI1C | 606585 |
4q21 |
| Amelogenesis imperfecta, type IIA1, 204700 (3) | KLK4, EMSP1, PRSS17, AI2A1 | 603767 |
19q13.4 |
| Amelogenesis imperfecta, type IIA2, 612529 (3) | MMP20, AI2A2 | 604629 |
11q22.3-q23 |
| Amelogenesis imperfecta-3, hypoplastic type (2) (?) | AIH3 | 301201 |
Xq22-q28 |
| Aminoacylase 1 deficiency, 609924 (3) | ACY1, ACY1D | 104620 |
3p21.1 |
| Amish infantile epilepsy syndrome, 609056 (3) | SIAT9, ST3GALV | 604402 |
2p11.2 |
| Amyloid polyneuropathy, several types, 105210 (3) | TTR, PALB | 176300 |
18q11.2-q12.1 |
| Amyloidosis, 3 or more types, 105200 (3) | APOA1 | 107680 |
11q23 |
| Amyloidosis, Finnish type, 105120 (3) | GSN | 137350 |
9q34 |
| Amyloidosis, hereditary renal, 105200 (3) | FGA | 134820 |
4q28 |
| Amyloidosis, primary localized cutaneous, 105250 (3) | OSMR, OSMRB | 601743 |
5p13.1 |
| Amyloidosis, renal, 105200 (3) | LYZ | 153450 |
12q15 |
| Amyloidosis, senile systemic (3) | TTR, PALB | 176300 |
18q11.2-q12.1 |
| Amyotrophic lateral sclerosis 10, 612069 (3) | TARDBP, TDP43, ALS10 | 605078 |
1p36.2 |
| Amyotrophic lateral sclerosis 11, 612577 (3) | FIG4, KIAA0274, SAC3, ALS11 | 609390 |
6q21 |
