Table 1. CYP2D6 most frequent alleles according to different populations.

Population	Most recurrent alleles	Study
African and African-Americans	CYP2D6*5/*17	Chin et al. (2016)15
Alaska Native	CYP2D6*1	Khan et al. (2018)21
American Indian	CYP2D6*1	Khan et al. (2018)21
Caucasian	CYP2D6*4	Moyer et al. (2011)27
Chinese	CYP2D6*10	Chin et al. (2016)15 and Lan et al. (2018)16
Malaysian Malay	CYP2D6*10	Chin et al. (2016)15
Malaysian Indian	CYP2D6*4/*10	Chin et al. (2016)15