Plasma unacylated and acylated ghrelin levels (319.3 ± 202.6 pg/mL and 120.5 ± 94.4 pg/mL, respectively) were found to be significantly lower in TA patients than healthy controls (623.2 ± 270.0 pg/mL and 180.9 ± 128.7 pg/mL, respectively) (P < 0.001 and P < 0.05, respectively) (Table 2). This evidence concerns the gene GHRL and Takayasu arteritis.