We used existing expression databases and bioinformatics tools that detect functional STRs lying in differentially expressed genes in prostate cancer as described previously by us (Lai et al., 2017), whereby we identified a penta-STR within the 3′UTR of the tribbles homologue 1 gene (TRIB1): TTTTG-TRIB1. Here, TRIB1 is linked to prostate cancer.