Letrozole in the Treatment of Severe and Recurrent Endometriosis

April 25, 2012 updated by: Novartis Pharmaceuticals
Endometriosis is a condition in which abnormal growth of tissue histologically resembling the lining of the uterus (endometrium) is present outside of the uterus. This study will investigate the effect of a daily dose of letrozole compared to GnRH is safe and in addition effective in reducing measurable endometriosis lesions and in reducing pain in patients with active endometriosis which were pretreated with GnRH analogs for 2 months.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment

40

Phase

  • Phase 2

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria

  • Premenopausal women > 18 years of age.
  • Laparoscopic and Histologically confirmed diagnosis of moderate or severe endometriosis according rASRM-Score III and IV
  • BMI less than 40 kg/m².
  • Patient is sexually abstinent or using mechanical (condoms, diaphragms) or sterilization methods of contraception and is willing to continue using them throughout the study.
  • Patient is willing and able to comply with study requirements.
  • Written informed consent.

Exclusion Criteria

  • Endometriosis stage I-II acc. according to rASRM
  • Women with other causes of chronic pelvic pain including infectious, gastrointestinal, musculoskeletal, neurologic or psychiatric.
  • Significant abnormalities in the physical or laboratory examination including renal and liver function more than twice the normal range.
  • Patient desires pregnancy for the duration of the study, is pregnant or breast feeding.
  • GnRH therapy during the last 6 months
  • Use of hormonal contraception, selective estrogen receptor modulators, progestins, estrogens, steroids, or ovulation induction in the 4 weeks prior to inclusion into the study.
  • Untreated abnormal pap smear or other gynecologic condition.
  • History of venous thrombosis events including deep vein thrombosis, pulmonary embolism, or retinal vein thrombosis.
  • History of stroke, complicated migraine, or documented transient ischemic attack.
  • Known hypersensitivity to any ingredient of the study medication.
  • Treatment with other aromatase inhibitors
  • Other investigational drugs within the past 30 days and the concomitant use of investigational drugs.
  • History of non-compliance to medical regimens, and patients who are considered potentially unreliable.

Additional protocol-defined inclusion / exclusion criteria may apply

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Response rates (CR, PR, NC, PD) during treatment of advanced endometrial cancer assessed by tumor marker assessments and radiologic imaging at week 12 then q 12 weeks x 1 year then q 16 weeks

Secondary Outcome Measures

Outcome Measure
Duration of clinical response
Time to progression of the disease
Correlation of tumour response with pretreatment ER/PR status
Histological grade and aromatase levels

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Novartis Pharmaceuticals

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

October 1, 2002

Primary Completion (Actual)

June 1, 2006

Study Completion (Actual)

June 1, 2006

Study Registration Dates

First Submitted

October 14, 2005

First Submitted That Met QC Criteria

October 14, 2005

First Posted (Estimate)

October 18, 2005

Study Record Updates

Last Update Posted (Estimate)

April 26, 2012

Last Update Submitted That Met QC Criteria

April 25, 2012

Last Verified

April 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CFEM345ADE04

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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