Aim: To evaluate the genetic distribution of the rs4149056 and rs2306283 variants in the SLCO1B1 gene in Mexican Mestizo (admixed) and Native American groups. Materials & methods: We recruited 360 volunteers who were qPCR-genotyped with TaqMan probes. Results: Allele and genotype frequencies are reported. Among the expected rs4149056– rs2306283 haplotypes, T–A (42.35–58.47%) was the most prevalent which relates to the normal activity of the OATP1B1 transporter. This was followed by the T–G haplotype associated with further statin transport and cholesterol reduction (32.49–43.76%). Conclusion: Based on these SLCO1B1 gene variants, we confirmed that a minimum fraction of the Mexican study populations would be at risk from decreasing simvastatin transport and the development of statin-induced myopathy.
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