ASPN and prostate cancer: A subset of cases probed for ASPN expression were also dually examined by the RNAscope® Duplex Assay for FAP expression in stroma adjacent to benign prostate (n = 11) and in Gleason grade 3 (n = 5), Gleason grade 4 with noncribriform morphology (n = 8), and Gleason grade 4 with cribriform morphology (n = 6) prostate cancer.