Letrozole in the Treatment of Severe and Recurrent Endometriosis

NCT ID: NCT00240942

Last Updated: 2012-04-26

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE2
• Total Enrollment: 40 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2002-10-31
• Study Completion Date: 2006-06-30

Brief Summary

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.

Conditions

Severe and Recurrent Endometriosis

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Interventions

Letrozole

Intervention Type: DRUG

Eligibility Criteria

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.

• Minimum Eligible Age: 18 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: No

Sponsors

Novartis Pharmaceuticals

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Novartis Pharmaceuticals

Role: STUDY_DIRECTOR

Novartis Pharmaceuticals

Other Identifiers

CFEM345ADE04

Identifier Type: -

Identifier Source: org_study_id