Genotypification and Predisposing Factors in Human Papilloma Virus Infection

Not Applicable

Completed

• Conditions: Intraepithelial Neoplasia
• Interventions: Other: Linear Array HPV Genotyping assay

• Registration Number: NCT01924117
• Lead Sponsor: Materno-Perinatal Hospital of the State of Mexico

Brief Summary

Objective: Determine the genotypes and risk factors associated with human papilloma virus infection in Mexican women.

Methods: It was a cross-sectional study of women attended at the Materno-Perinatal Hospital "Mónica Pretelini" and the Medical Research Center (CICMED), who were asked to complete a risk factor questionnaire and submitted to colposcopy to identify SIL. Cervical swab samples were obtained to perform linear array HPV genotyping test (Roche®, Mannheim, Germany).

Detailed Description

Principles: The aim of this study was to determine the HPV genotypes in squamous intraepithelial lesions (SIL) in a population sample of the State of Mexico.

Patients:

The inclusion criteria were women submitted to a colposcopy study at the Clinic 221 of the Mexican Social Security Institute (IMSS), Maternal-Perinatal Hospital "Monica Pretelini" (HMPMP), State of Mexico Health Institute (ISEM) and the Medical Research Center (CICMED), Autonomous University of State of México (UAEMex). Women with previous conization were not considered into the study and those whose clinical follow up was lost were excluded.

Sociodemographic factors:

Patients were given a questionnaire to measure the following potential risk factors: age, area of residence, education level, sexual partners, participation in anal sex, age at first intercourse, smoking, use of hormonal contraception, use of condoms, number of pregnancies and vaginal deliveries.

Cervical samples:

Samples were collected by cervical scraping and were preserved in ThinPrep® PreservCyt® Solution (HologicTM Marlborough, Massachusetts, USA).

HPV genotyping:

DNA extraction from the cervical swab samples was performed using the Amplicor kit (Roche®, Mannheim, Germany), isolating simultaneously the β-globin gene along with HPV. HPV positive specimens were subsequently genotyped using the Linear Array HPV Genotyping assay (Roche®, Mannheim, Germany). This test is a qualitative in vitro test for the detection of HPV utilizing amplification of target DNA by the Polymerase Chain Reaction (PCR) and nucleic acid hybridization able to detect 37 anogenital HPV DNA genotypes (6, 11, 16, 18, 26, 31, 33, 35, 39, 40, 42, 45, 51, 52, 53, 54, 55, 56, 58, 59, 61, 62, 64, 66, 67, 68, 69, 70, 71, 72, 73 (MM9), 81, 82 (MM4), 83 (MM7), 84 (MM8), IS39 and CP6108). This technique can detect multiple HPV genotypes in the same sample.

Ethical concerns:

We followed the Declaration of Helsinki and all patients were asked to sign the written informed consent. This study was accepted by the Research and Ethical Committee of the CICMED.

Statistical analysis:

First, descriptive analyzes were performed, secondly, Odds Ratios (OR) and their associated 95% confidence intervals (95% CI) were calculated as well as Chi-square tests and conditional regression model for SIL using the Statistical Package for the Social Sciences (SPSS) 17.0 software. Difference was considered significant at p ≤ 0.05.

Study Timeline

• Study Start: 2011-02
• Primary Completion: 2011-05
• Study Completion: 2011-10
• Status Verified: 2013-08
• Study First Submitted: 2013-08-13
• Study First Submitted QC: 2013-08-15
• Last Update Submitted: 2013-08-15
• Study First Posted: 2013-08-16
• Last Update Posted: 2013-08-16

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 129

Inclusion Criteria

• Sexually active women 18 to 40 years of age who come to consult the dysplasia clinic.
• Who are not pregnant
• Who have not received pharmacological treatment with antibiotics and / or anti-inflammatory drugs at least one month before the study.
• Who agreed to participate in the study and signed the informed consent letter.
• Acceptance to fill the questionnaire with relevant data related to HPV risk infection

Exclusion Criteria

• Inadequate samples
• Questionnaires with incomplete data
• Women who decided to leave the study

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Linear Array HPV Genotyping assay	Linear Array HPV Genotyping assay	Women submitted to colposcopy with a suspicion of squamous intraepithelial lesion were programmed a clinical follow up to cervical swab in order to extract DNA and perform a Linear Array HPV Genotyping assay (Roche®, Mannheim, Germany).

Primary Outcome Measures

Name	Time	Method
Multiple HPV infection	At the moment of the colposcopy	While women are revised by colposcopy the Gynecologist will refer them to a cervical swab for DNA extraction in case of suspicious of HPV infection.

Secondary Outcome Measures

Name	Time	Method
squamous intraepithelial lesions	Within one week after the cervical sample taken by the technician	The pathologist will determine the presence or absence of SIL with the sample taken in the Papanicolaou smear appointment