Evidence map›Paper›PMID 41668229›Full record

ArticleEwha medical journal2026

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.

Ashwini Pitambra, Jitendra Singh Nigam, Immanuel Pradeep, Ashutosh Rath, Seetu Palo, Naina Kumar

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Article in Ewha medical journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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6 authors.

Ashwini PitambraDepartment of Pathology and Lab Medicine, All India Institute of Medical Sciences, Bibinagar, India.
Jitendra Singh NigamDepartment of Pathology and Lab Medicine, All India Institute of Medical Sciences, Bibinagar, India.
Immanuel PradeepDepartment of Pathology and Lab Medicine, All India Institute of Medical Sciences, Bibinagar, India.
Ashutosh RathDepartment of Pathology and Lab Medicine, All India Institute of Medical Sciences, Bibinagar, India.
Seetu PaloDepartment of Pathology and Lab Medicine, All India Institute of Medical Sciences, Bibinagar, India.
Naina KumarDepartment of Obstetrics and Gynecology, All India Institute of Medical Sciences, Bibinagar, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeHuman papillomavirus is the dominant etiological factor underlying atypical cervical squamous epithelial cell abnormalities and cervical carcinoma. Currently, only a limited number of drugs targeting specific biomarkers in cervical cancer are available. This study aimed to assess the expression of estrogen receptor (ER), human epidermal growth factor receptor 2 (HER2), and the Ki-67 proliferative index (Ki-67) in p16-positive cervical squamous premalignant and malignant lesions, which may help clarify the potential role of targeted therapies in cervical cancer.

methodsIn p16-positive, histologically proven premalignant and malignant cervical lesions, ER, HER2, and Ki-67 expression were evaluated according to predefined criteria.

resultsp16 showed strong nuclear and cytoplasmic positivity in 54 of 56 cases. Patchy nuclear positivity was mainly observed in low-grade squamous intraepithelial lesion (LSIL) cases (2/56). Ki-67 demonstrated a variable proliferative index ranging from 5% to 95% across all cases, with higher indices predominantly observed in squamous cell carcinomas (SCC). ER positivity in LSIL, high-grade squamous intraepithelial lesion, and SCC was 100% (2/2), 66.7% (10/15), and 46.15% (18/39), respectively. HER2 expression was predominantly negative, observed in 78.6% (44/56) of cases, equivocal in 17.8% (10/56), and positive in 3.6% (2/56). Both HER2-positive cases were SCC. ER and HER2 interpretations were analyzed and were not significantly correlated with clinical or pathological parameters.

conclusionER 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.

Indexed as

CervixEstrogen receptorsHER2p16Squamous intraepithelial lesionsUterine cervical neoplasms

Identifiers

PMID41668229
PMCPMC12891606

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