Upregulated miRNAs such as ssc-miR-23a, ssc-miR-29c, ssc-miR-193a-3p, and ssc-miR-574-3p may serve as potential candidates for IUGR testes and are predicted to target core genes including YWHAZ, YWHAB, and PPP2CA, potentially acting synergistically to suppress cell cycle progression and promote apoptosis. The gene discussed is YWHAZ; the disease is fetal growth restriction.