KLK7 and thyroid gland disorder: We discovered that KLK7 mRNA expression is linked to histological type (Figure 3C), pathological stage (Figure 3D), pathological T stage (Figure 3E), pathological N stage (Figure 3F), tumor location (Figure 3H), extrathyroidal extension (Figure 3J), and a history of thyroid gland disorders (Figure 3K).