MKI67 and neoplasm: The present study aimed to evaluate the association between IMP3 expression and prognostic and morphological factors of EC, alongside other tumor biomarkers including claudins 3 (CLDN3) and 4 (CLDN4), estrogen receptor (ER), progesterone receptor (PR), TP53, and KI67 (MKI67 – marker of proliferation Ki-67).