Functional and pathway analyses suggested multiple molecular mechanisms for estrogen-dependent growth of human uterine fibroids: enhanced tumor cell survival by increased expression of PCP4 and decreased expression of TGF-β R2 and PTGER3 and the complex interplay among five distinct nuclear receptors (ER, RAR, RXR, NR4A1 and PPARγ) that may enhance tumor cell survival and growth. This evidence concerns the gene PCP4 and neoplasm.