Moreover, among PID patients, serum LOXL2 level was significantly higher in subjects with pelvic adhesion [508.2 (453.0–554.8) pg/mL] compared to subjects without pelvic adhesion [382.6 (327.5–418.9) pg/mL] (P < 0.001; Fig. 1B). The gene discussed is LOXL2; the disease is pelvic inflammatory disease.