Testing and controlling for horizontal pleiotropy with probabilistic Mendelian randomization in transcriptome-wide association studies Yuan, Z., Zhu, H., Zeng, P. et al., Nat Commun 11, 3861 (2020). https://doi.org/10.1038/s41467-020-17668-6
"We present a probabilistic Mendelian randomization (MR) method, PMR-Egger, for TWAS applications. We illustrate the benefits of PMR-Egger in applications to 39 diseases and complex traits obtained from three GWASs including the UK Biobank."