TNF and oral lichen planus: Results. In the tissue transudate(TT), there were significantly higher level of cytokines TNF-alpha, IL-1-alpha, IL-6, and IL-8 detected in OLP patients than in controls: (TT: 40.0 ± 9.8 versus 4.5 ± 0.7, 710 ± 114 versus 305 ± 78, 150 ± 25 versus 1.7 ± 0.5, 2800 ± 260 versus 1450 ± 130, P < .0001; unit: pg/mL).