As ATIP appears to play an important role in human prostate cancer cell growth, we have extended our recent work [10] to determine the expression and localization of ATIP using immunohistochemical techniques in fixed prostate cancer cells and paraffin-embedded human prostatic biopsy materials containing benign prostatic hyperplasia (BPH), high grade prostatic intraepithelial neoplasia (HGPIN), a premalignant state, and a range of prostate cancer grades. Here, MTUS1 is linked to benign prostatic hyperplasia.