Allele frequencies of CYP2A6*7, CYP2A6*18, and CYP2A6*19 in four populations Values of 95% confidence interval are in parentheses; n is number of alleles.
Allele | Whites (n = 370) | African-Americans (n = 350) | Japanese (n = 368) | Koreans (n = 418) | |||
|---|---|---|---|---|---|---|---|
| % | |||||||
| CYP2A6*7 | 0.0 (0.0–0.8) | 0.0 (0.0–0.9) | 13.0 (9.9–16.8) | 10.0 (7.5–13.3) | |||
| CYP2A6*18A | 1.1 (0.4–2.8) | 0.0 (0.0–0.9) | 0.0 (0.0–0.8) | 0.5 (0.1–1.8) | |||
| CYP2A6*18B | 1.1 (0.4–2.8) | 0.0 (0.0–0.9) | 0.0 (0.0–0.8) | 0.0 (0.0–0.7) | |||
|
CYP2A6*19
| 0.0 (0.0–0.8) | 0.0 (0.0–0.9) | 0.5 (0.1–1.9) | 1.0 (0.4–2.5) | |||