Clinical trial NCT02522585: p16 and Ki-67 Stainings and Natural Killer (NK) Cells in CIN-II Management
Official title: Predictive Value of p16 and Ki-67 Immunohistochemical Staining and NK Cells in Expectant Management of Cervical Intraepithelial Neoplasia Grade 2
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Cervical Cancer
Keywords: expectant management
p16
immunohistochemistry
regression
progression
cervical intraepithelial neoplasia
Lead sponsor: Parc de Salut Mar
Sponsor class: OTHER
First posted: 2015-08-13
Enrollment: 100
Sex: FEMALE
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Adult females with CIN-II lesion on cervical biopsy that agree to a conservative management during a period not more than 24 months, referred to the low genital tract diseases clinic of Hospital del Mar.

Brief summary: The objective of this study is to evaluate the outcome of cervical intraepithelial neoplasia grade 2 (CIN-II) patients followed up without treatment for 24 months according to p16 and ki-67 immunohistochemical staining and to the expression of NK cell receptors.

Detailed description: Cervical cancer and its precursor lesions, cervical intraepithelial neoplasia (CIN), represents a significant public health problem,induced by persistent infection of human papillomavirus (HPV). It is known that a significant percentage of CIN regresses spontaneously and only a minority of these lesions progress to cervical cancer. CIN-II is an intermediate state that can regress to CIN-I or less, or progress to CIN-III spontaneously. The rate of spontaneous regression and progression in follow-up studies are around 40-60% and 10-20%, respectively. Overestimating CIN-II lesions may cause overtreatment by excisional treatment and increase the risk of subsequent obstetric complications.

Patients newly diagnosed with CIN-II colposcopy-directed biopsy who agreed to follow up at four months intervals for at least 12 months with cervical cytology and colposcopy, were prospectively recruited. p16, ki-67 and NK receptors expression were analyzed in all CIN-II biopsies. Total regression, partial regression, persistence and progression rates of CIN-II were defined as a final outcome.

Eligibility criteria: Inclusion Criteria:

* preferred expectant management than immediate treatment
* exocervical histological diagnosis of CIN-II
* lesion completely visualized by colposcopy
* entire squamocolumnar junction of the cervix was visible
* showing no evidence of any immunodeficiency disease
* no history of previous cervical treatment
* could be followed-up every four months during one year
* signed consent form

Exclusion Criteria:

* not coming to follow up appointments

Primary outcomes:
measure: Status of cervix pathology using cervical smear test (CIN grade)
timeFrame: 2 years
Secondary outcomes:
Other outcomes:
Locations:
Study officials:
affiliation: Parc de Salut Mar
name: Gemma Mancebo, PhD
role: PRINCIPAL_INVESTIGATOR
affiliation: Parc de Salut Mar
name: Ramon Carreras, PhD
role: STUDY_CHAIR
References:
citation: Discacciati MG, de Souza CA, d'Otavianno MG, Angelo-Andrade LA, Westin MC, Rabelo-Santos SH, Zeferino LC. Outcome of expectant management of cervical intraepithelial neoplasia grade 2 in women followed for 12 months. Eur J Obstet Gynecol Reprod Biol. 2011 Apr;155(2):204-8. doi: 10.1016/j.ejogrb.2010.12.002. Epub 2010 Dec 28.
citation: Tsoumpou I, Arbyn M, Kyrgiou M, Wentzensen N, Koliopoulos G, Martin-Hirsch P, Malamou-Mitsi V, Paraskevaidis E. p16(INK4a) immunostaining in cytological and histological specimens from the uterine cervix: a systematic review and meta-analysis. Cancer Treat Rev. 2009 May;35(3):210-20. doi: 10.1016/j.ctrv.2008.10.005. Epub 2009 Mar 3.
citation: del Pino M, Garcia S, Fuste V, Alonso I, Fuste P, Torne A, Ordi J. Value of p16(INK4a) as a marker of progression/regression in cervical intraepithelial neoplasia grade 1. Am J Obstet Gynecol. 2009 Nov;201(5):488.e1-7. doi: 10.1016/j.ajog.2009.05.046. Epub 2009 Aug 15.
citation: Galgano MT, Castle PE, Atkins KA, Brix WK, Nassau SR, Stoler MH. Using biomarkers as objective standards in the diagnosis of cervical biopsies. Am J Surg Pathol. 2010 Aug;34(8):1077-87. doi: 10.1097/PAS.0b013e3181e8b2c4.
citation: Guedes AC, Brenna SM, Coelho SA, Martinez EZ, Syrjanen KJ, Zeferino LC. p16(INK4a) Expression does not predict the outcome of cervical intraepithelial neoplasia grade 2. Int J Gynecol Cancer. 2007 Sep-Oct;17(5):1099-103. doi: 10.1111/j.1525-1438.2007.00899.x. Epub 2007 Mar 15.
citation: McAllum B, Sykes PH, Sadler L, Macnab H, Simcock BJ, Mekhail AK. Is the treatment of CIN 2 always necessary in women under 25 years old? Am J Obstet Gynecol. 2011 Nov;205(5):478.e1-7. doi: 10.1016/j.ajog.2011.06.069. Epub 2011 Jun 25.