Differences in SCNA number, including gain, LOH and CN-LOH were evaluated with Mann–Whitney’s U test in JMP Pro16.1 (SAS, Tokyo, Japan). Differences in SCNAs between isolated cribriform-type and well-formed gland-type adenocarcinomas were analyzed with Fisher’s exact test. A P value <0.05 was considered significant. P values were adjusted with the Benjamini–Hochberg false discovery rate (FDR) for multiple comparisons.
Differences in mRNA expression levels between cribriform-type and well-formed gland-type adenocarcinomas for isolated cancer and normal glands were analyzed with the interaction analysis methods of Transcriptome Analysis Console 4.0.2 (Thermo Fisher Scientific, MA) (FDR-P value <0.05 and Δ Fold change ≥ absolute value 2).