Table 1.

Frequencies of TPMT mutant alleles in major ethnic groups and populations (%).

Ethnicity	*2	*3A	*3B	*3C	*4	Reference
Caucasian	0.2	3.5	0.04	0.4	-1	[35]
Mediterranean	0.4	2.5	0.4	0.5	-	[35]
Middle Eastern	0.7	1.1	0.5	0.5	-	[35]
Asian	0	0.01	0	1.5	-	[35]
African	0.08	0.2	0	4.9	-	[35]
South American	0.8	2.8	0.05	0.9	0.05	[35]
European	0.5	5.7	0	0.8	-	[42]
British	0.5	4.5	0	0.3	-	[43]
German	0.2	4.5	0	0.4	-	[13]
Russian	0.1	2.3	0	0.4	-	[44]
Italian-Caucasian	0	2.2	0.3	0.3	-	[45]
Spanish	0	2.5	0.7	1	-	[46]
Turkish	0	0.9	0	0.9	-	[47]
Iranian	2.2	1.7	1.6	0.5	-	[48]
Israeli	0	1.2	0	0.4	-	[49]
Kazak	0	0.3	0	0.9	-	[50]
Egyptian	0	0.3	0	1.3	-	[51]
Chinese	0	0.1	0	1	-	[52]
Japanese	0	0	0	1.6	-	[53]
Korean	0	0	0	1	-	[54]
Indian	0	0.5	0	0.8	-	[55]

¹frequency was not reported.