A study in humans demonstrated that the mir-338 was differentially expressed in three pairs of monozygotic twins via miRNA sequencing, identifying it as a candidate for personal identification [Wang et al. DOI:10.1016/j.fsigen.2025.103230]. A study in rats demonstrated that the mir-338 was significantly up-regulated in the corpus cavernosum of a bilateral cavernous nerve crush model of post-radical prostatectomy erectile dysfunction, with a validated relative expression level of 11.53 ± 13.14 compared to controls [Liu et al. DOI:10.1016/j.jsxm.2018.05.006].