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RecruitingUterine Leiomyosarcoma

Letrozole in Uterine Leiomyosarcoma

Eligible age

18+ yrs

Accepts

Women

Locations

17 states

Healthy volunteers

No

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About this study

This is a clinical trial to test letrozole in patients with uterine leiomyosarcoma. The main question is will treatment with letrozole extend progression-free survival in patients. Patients will receive 2/5 mg of letrozole daily.

Sponsor: GOG Foundation

You may qualify if…

  • ✓ 1. Patient or a legally authorized representative must have signed an approved informed consent and authorization permitting the release of personal health information.
  • ✓ 2. Patient must have histologically confirmed newly diagnosed uterine leiomyosarcoma with disease limited to the uterus (FIGO 2009 Stage I). Submission of pathology report documenting uterine leiomyosarcoma histology is required in the IRT Source Document Portal following randomization.
  • ✓ 3. Patient tumors must express ER positivity by immunohistochemistry (ER expression greater than 10% by immunohistochemistry). ER status test results must be provided at enrollment. Sites are required to report results of ER status testing in the IRT Source Document Portal.
  • ✓ 4. Patient must have completed hysterectomy and bilateral salpingo-oopherectomy no more than 12 weeks from enrollment.
  • ✓ 5. All patients must have NO measurable disease as defined by RECIST 1.1 within 6 weeks of enrollment. Measurable disease is defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded). Each lesion must be greater than or equal to 10 mm when measured by CT, MRI or caliper measurement by clinical exam; or greater than or equal to 20 mm when measured by chest x-ray. Lymph nodes must be greater than or equal to 15 mm in short axis when measured by CT or MRI.
  • ✓ 6. Patients must have an ECOG performance status of 0, 1, or 2.
  • ✓ 7. Patients must have adequate organ and marrow function as defined below:
  • ✓ NOTE: Institutional/laboratory upper limit of normal = ULN Institutional/laboratory lower limit of normal = LLN

You may not qualify if…

  • ✕ 2\. Patients with any other severe concurrent disease, which would make the patient inappropriate for entry into this study, including significant hepatic, renal, or gastrointestinal diseases.
  • ✕ 3\. Patients with concomitant invasive malignancy or a history of prior malignancy except non-melanoma skin cancer, in situ cervical cancer, or other cancer for which the patient has been disease-free for at least three years. Patients are also excluded if their previous cancer treatment contraindicates this protocol.
  • ✕ 4\. Patients who have a history of taking any aromatase inhibitor within the past 5 years.
  • ✕ 5\. Patients with active or uncontrolled systemic infection. 6. Patients with history of uncontrolled cardiac disease, i.e., uncontrolled hypertension (defined as systolic greater than 150 mm Hg or diastolic greater than 90 mm HR despite antihypertensive medications), unstable angina, recent myocardial infarction (within prior 6 months), uncontrolled congestive heart failure (NYHA Class II or greater), clinically significant cardiac arrhythmias, and cardiomyopathy with an ejection fraction under 40%.
  • ✕ 7\. Patients currently receiving chemotherapy or radiation therapy. 8. Patients with severe hepatic impairment and/or cirrhosis. 9. Patients with duodenal stent or other GI disorder/defect that would interfere with absorption of oral medication.
  • ✕ 10\. Patients deemed otherwise clinically unfit for clinical trial per investigators discretion.
  • ✕ 11\. Patients with known hypersensitivity to any of the excipients of letrozole. 12. Patients who are pregnant or breast-feeding. 13. Patients who are currently part of or have participated in any clinical investigation with an investigational drug within 30 days of prior to enrollment.
  • ✕ 14\. Patients currently using systemic estrogens, including herbals and supplements with estrogenic properties. The use of vaginal estrogen is permitted if symptoms are refractory to moisturizers and lubricants.

Where it's recruiting

Colorado

Aurora · Highlands Ranch

Florida

Fort Lauderdale · Miami Beach

Georgia

Atlanta

Illinois

Evanston

Indiana

Indianapolis

Louisiana

New Orleans · Shreveport

Massachusetts

Worcester

Michigan

Adrian · Monroe

Minnesota

Minneapolis

Nevada

Las Vegas

New Jersey

Morristown · Summit

New Mexico

Albuquerque

Source: ClinicalTrials.gov · NCT05649956 · last updated 2026-07-30