TNF and retinopathy of prematurity: A noteworthy finding of the study was the significantly higher levels of TNF-alpha, a pro-inflammatory cytokine, in the Any ROP group both on the first day of life (24.9 ± 18.8 pg/mL vs. 14.2 ± 12.3 pg/mL in No ROP; p = 0.0014) and at 2 weeks of life (38.2 ± 45.3 pg/mL vs. 16.9 ± 24.0 pg/mL in No ROP; p = 0.0051).