MKI67 and endometrial carcinoma: He et al. [58] compared the APT values of low-proliferation (Ki-67 < 30%, n = 8) and high-proliferation cases (Ki-67 > 30%, n = 14) of type I endometrial carcinoma, showing there was a moderate positive correlation between the Ki-67 labeling index and APT values (r = 0.583, p = 0.004).