TNF and vitiligo: In vitiligo patients, the TNF-α haplotypes: GATCC, AGTCT, AGCCT and AACCT were found to increase sTNF-α levels (p = 0.031, p = 0.003, p = 0.009 and p = 0.007 respectively) with susceptible alleles (−238A, −308A, −857T and −1031C) as compared to controls (Figure 4B).