Evaluation of four commonly used normalizer genes for the study of decidual gene expression.

Reverse transcription quantitative PCR (RT-qPCR) gene expression results must be normalized using stably expressed genes to correct for technical variation. We evaluated the expression of four widely used normalizers (RNA18S, GAPDH, TBP, and YWHAZ) across 59 decidual tissue samples collected by vacuum suction from preeclamptic and normotensive pregnancies. RNA18S and GAPDH were not suitable as normalizers, while YWHAZ and TBP were stably expressed across the study groups.