Immunohistochemical expression of Ki-67, estrogen receptor, and human epidermal growth factor receptor 2 in p16-positive premalignant and malignant cervical squamous lesions: associations with clinicopathological parameters

ER positivity decreased with progression of cervical squamous lesions, and HER2 expression was rare in cervical squamous neoplasia. No statistically significant correlation was identified between ER or HER2 expression and clinicopathological parameters. The findings of the current study may help fill gaps in the existing literature and provide essential foundational knowledge for optimizing emerging therapeutic strategies, including ER- and HER2-related therapies.