Clinical trial Recruiting at 1 site Interventional Ages 18 and up Women only

Comparing two surgical methods for treating cervical dysplasia

Official title: Comparison of Two Surgical Approaches in the Treatment of Cervical Dysplasia: Complete Removal of the Transformation Zone (LLETZ) Versus Isolated Resection of the Colposcopically Visible Lesion (LEEP)

Run by Ruhr University of Bochum · NCT04772937 · Data updated 2026-11-12

This study is testing which of two surgical methods for treating cervical dysplasia is safer and more effective in removing abnormal cells.

Quick facts

Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment206 (estimated)
SponsorRuhr University of Bochum
Academic / other
Locations1 site (Herne)
StatusRecruiting
StartedJune 7, 2021
Main results expectedJune 2025
Study endsNovember 2025
Registry record updatedJanuary 30, 2025
Trial IDNCT04772937 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are women with histologically confirmed High Grade Squamous Intraepithelial Lesion (HSIL) and a colposcopically visible lesion.

Probably not a fit

Patients who are pregnant, taking immunosuppressive drugs, or have other significant health issues may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to compare the oncological safety of two surgical procedures, LLETZ and LEEP, for the treatment of cervical dysplasia. LLETZ involves the complete resection of the dysplastic lesion along with the transformation zone, while LEEP targets only the visibly affected area. The primary focus is to determine which method has a lower rate of incomplete resection, known as 'non-in-sano rate'. By evaluating these two approaches, the study seeks to optimize surgical therapy for cervical dysplasia and improve patient outcomes.

Why it matters

Potential benefit: If successful, this study could lead to improved surgical techniques that enhance the safety and effectiveness of cervical dysplasia treatment.

How similar studies have gone: While there is limited direct comparison data between LLETZ and LEEP, previous studies on cervical dysplasia treatments have shown varying degrees of success with different surgical methods.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Histologically confirmed High Grade Squamous Intraepithelial Lesion (HSIL)
* Colposcopically visible lesion
* No therapy of the disease so far

Exclusion Criteria:

* Pregnancy of the patient at/after inclusion in the study; pregnancy after conization and before the control after 6 months is possible and does not lead to exclusion from the study.
* Taking immunosuppressive drugs (incl. glucocorticoids)
* Known HIV positivity
* Malignant disease requiring treatment
* Unsatisfactory colposcopy

Where it's running

  • Dept. OBGYN Ruhr University Bochum
    Herne, Germany
    Recruiting

Study contacts

  • Principal investigator: Clemens B Tempfer, MD, MBA — Ruhr-Universität Bochum / Marien Hospital Herne
  • Study coordinator: Clemens B Temfper, MD, MBA
  • Email: clemens.tempfer@rub.de
  • Phone: +492323499

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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  • Impact of LEEP on Women's Sexual Function and Quality of Life

    This study is testing how the loop electrosurgical excision procedure (LEEP) affects sexual function and quality of life in women with HPV-related cervical lesions compared to those who only have a colposcopy.

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  • Using liquid biopsies to monitor treatment in HPV-related cancers

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.