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. Author manuscript; available in PMC: 2016 Jan 31.
Published in final edited form as: Pharmacogenomics. 2015 Apr;16(5):441–448. doi: 10.2217/pgs.15.10

Figure 1. TPMT allele frequency (combined *2, *3A, *3B and *3C) distribution in North and South America [52–59].

Figure 1

USA Caucasian (blue) represents the reference frequency (0.04) [56]. Green = between 0.5 and 2× the reference frequency, yellow = allele frequencies greater than 2× the reference frequency, gray = unknown frequency. Allele frequencies are listed in Supplementary Table 1.