PCAT19 and Familial prostate cancer: Given the initial identification of PCAT19 in prostate tissue33 and the elucidation of its role in prostate cancer,34 we analyzed the expression of PCAT19 in the prostate gland in more detail by interrogating publicly available data from a prostate single-cell RNA-sequencing (scRNA-seq) experiment (GEO: GSE172357).5