SLCO1B1 c.521T>C Genotyping in the Austrian Population Using 2 Commercial Real-Time Polymerase Chain Reaction Assays: An Implementation Study

Statin-induced myopathy is reported to be significantly associated with the SCLO1B1 c.521T>C polymorphism. To date, SLCO1B1 c.521T>C epidemiologic data for the Austrian population is still lacking. Therefore, this study aimed at assessing the genotype and allele frequencies of the SLCO1B1 c.521T>C variant in Austria and evaluating the clinical performance of 2 commercial real-time polymerase chain reaction (PCR) assays. Genomic DNA isolated from 181 healthy individuals was analyzed for the SLCO1B1 c.521T>C polymorphism in a comparative manner using the SLCO1B1 c.521T>C RealFast TM Assay and the BioPro SLCO1B1 Genotyping real-time PCR Kit. A total of 10 (5.5%) and 44 (24.3%) out of 181 individuals were SLCO1B1 c.521T>C C/C-homo- and ­C/T-heterozygotes, the genotypes indicative of high and increased risk of statin-induced myopathy, respectively. The SLCO1B1 c.521C allele frequency rate was 17.7%. In conclusion, the genetic predisposition of elevated statin-induced myopathy risk in the Austrian population is frequent. Both real-time PCR assays under investigation here are reliable and robust SLCO1B1 c.521T>C genotyping tools in clinical routine.