ABCB1 and myopathy: The patient was cytochrome P-450 (CYP) 3A4∗1/∗1 (absence of reduced activity ∗22 allele), CYP3A5∗1/∗1 (absence of inactive ∗3 allele rending the patient CYP3A5 expressor), influx transporter gene SLCO1B1∗1b/∗1b (absence of reduced activity ∗5 allele considered as the main genetic risk factor for developing myopathy after simvastatin intake), and efflux transporter gene ABCB1 heterozygote 3435CT.