Assessment of correlation between p16INK4a staining, specific subtype of human papillomavirus, and progression of LSIL/CIN1 lesions: first comparative study

• Published in: American journal of clinical pathology Vol. 142; no. 1; pp. 104 - 110
• Main Authors: Razmpoosh, Maryam, Sansregret, Andrée, Oligny, Luc L, Patey, Natalie, Dormoy-Raclet, Virginie, Ducruet, Thierry, Bouron-Dal Soglio, Dorothée
• Format: Journal Article
• Language: English
• Published: England 01-07-2014
• Subjects: Adult; Biomarkers, Tumor; Carcinoma, Squamous Cell - metabolism; Carcinoma, Squamous Cell - pathology; Carcinoma, Squamous Cell - virology; Cervical Intraepithelial Neoplasia - metabolism; Cervical Intraepithelial Neoplasia - pathology; Cervical Intraepithelial Neoplasia - virology; Cyclin-Dependent Kinase Inhibitor p16 - metabolism; Disease Progression; Female; Humans; Middle Aged; Papillomaviridae - isolation & purification; Papillomavirus Infections - diagnosis; Papillomavirus Infections - metabolism; Papillomavirus Infections - pathology; Prognosis; Uterine Cervical Neoplasms - metabolism; Uterine Cervical Neoplasms - pathology; Uterine Cervical Neoplasms - virology; Low-grade squamous intraepithelial lesion; Human papillomavirus; Prognosis; p16; CIN1; Cervical intraepithelial neoplasia grade 1; LSIL; HPV subtype
• ISSN: 1943-7722
• DOI: 10.1309/AJCPBX74QXCPXIKK

To study and compare the effectiveness of p16(INK4a) staining and specific human papillomavirus (HPV) subtypes as a prognostic marker in cervical intraepithelial neoplasia grade 1 (CIN1; low-grade squamous intraepithelial lesions).
Sixty-four cervical samples diagnosed as CIN1 and stained with p16(INK4a), with HPV status assessed by polymerase chain reaction-direct sequencing.
Of the 34 p16(INK4a)-negative biopsy specimens, 26 regressed, seven persisted, and one progressed. Of the 20 p16(INK4a) diffusely positive biopsy specimens, seven regressed, eight persisted, and five progressed. Ten biopsy specimens stained positive only in the lower one-third of the sample, of which seven regressed and three persisted. p16(INK4a) diffusely positive CIN1 lesions were associated with only high-risk HPV subtypes, with the exception of one HPV-negative biopsy specimen. Three different high-risk HPV subtypes and one low-risk HPV subtype (HPV66) were identified in the six CIN1 lesions that progressed.
There is a significant relationship between p16(INK4a) immunostaining and follow-up (P = .002). p16(INK4a)-negative specimens or positivity in the lower one-third of CIN1 lesions seldom progress to a CIN2-3 lesion.