The concentrations of the tested parameters—MMP-7, MMP-26, MMP-3, MMP-10 and MMP-11—obtained in blood plasma from patients with ovarian endometrioid carcinoma, patients with ovarian cysts, and healthy women are presented in Table 2 and Table 3 and Figure 2, Figure 3, Figure 4, Figure 5 and Figure 6. The gene discussed is MMP26; the disease is Ovarian cyst.