Distribution of the Apolipoprotein E ε4 Allele as a Function of Race in the U.S. Population, for Normal Subjects (Controls) and Patients with Alzheimer's Disease47
| ε4 Homozygotes (%) | ε4 Heterozygotes (%) | ε4 Allele Frequency (%) | |
| Caucasian: | |||
| Controls | 1.8 | 23.9 | 13.7 |
| Alzheimer's | 14.8 | 43.7 | 36.7 |
| African American: | |||
| Controls | 2.1 | 33.94 | 19 |
| Alzheimer's | 12.3 | 40 | 32.2 |
| Hispanic: | |||
| Controls | 1.9 | 18.4 | 11 |
| Alzheimer's | 2.7 | 33 | 19.2 |
| Japanese: | |||
| Controls | 0.8 | 16.3 | 8.9 |
| Alzheimer's | 8.9 | 37.8 | 27.8 |









