In two studies, almost similar MMP-9 levels were observed in AIS and stroke mimic patients (175 ng/mL ± 149 vs. 175 ng/mL ± 227, p = 0.980; and median 11.6 pg/mL, IQR: 11.2–12.3 vs. 11.8 pg/mL, IQR: 11.3–12.2) (50, 55). The gene discussed is MMP9; the disease is androgen insensitivity syndrome.