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Letrozole in Treating Women With Recurrent or Metastatic Endometrial Cancer

This study has been completed.
Information provided by (Responsible Party):
Canadian Cancer Trials Group ( NCIC Clinical Trials Group ) Identifier:
First received: January 28, 2000
Last updated: September 20, 2012
Last verified: July 2012

RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die.

PURPOSE: Phase II trial to study the effectiveness of letrozole in treating women who have recurrent or metastatic endometrial cancer.

Condition Intervention Phase
Endometrial Cancer Drug: letrozole Phase 2

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase II Study of Letrozole in Patients With Advanced or Recurrent Endometrial Cancer

Resource links provided by NLM:

Further study details as provided by Canadian Cancer Trials Group ( NCIC Clinical Trials Group ):

Primary Outcome Measures:
  • Objective tumour response [ Time Frame: 3 years ]

Secondary Outcome Measures:
  • duration of response and time to progression [ Time Frame: 3 years ]
  • toxicity [ Time Frame: 3 years ]
  • tumour response [ Time Frame: 3 years ]
    Correlation of tumour response with pre-treatment ER/PR status, histological grade and aromatase levels.

Enrollment: 33
Study Start Date: January 2000
Study Completion Date: January 2011
Primary Completion Date: September 2002 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Letrozole
Letrozole 2.5 mg po daily
Drug: letrozole
2.5 mg of letrozole per day

Detailed Description:

OBJECTIVES: I. Determine the efficacy of letrozole, in terms of objective tumor response and time to progression, in women with recurrent or metastatic endometrial cancer. II. Determine the toxicity of letrozole in these patients. III. Determine the relationship between tumor receptor status, histologic grade, tumor aromatase activity, and tumor response in these patients.

OUTLINE: Patients receive an oral letrozole tablet daily. Treatment continues for patients with complete or partial response until disease progression or unacceptable toxicity. Patients with stable disease may discontinue therapy after 24 weeks. Patients are followed at 1 month and then every 3 months until death.

PROJECTED ACCRUAL: Up to 30 patients will be accrued for this study within 12-18 months.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

DISEASE CHARACTERISTICS: Histologically proven, recurrent or metastatic, adenocarcinoma or adenosquamous carcinoma of the endometrium not curable by surgery and/or radiotherapy Failed one prior progestin therapy for advanced/metastatic disease OR Considered for letrozole as first line therapy of advanced/metastatic disease No clear cell or papillary serous histology, uterine sarcomas, mixed muellerian tumors, and/or adenosarcomas At least one site of measurable disease by clinical exam, CT, or MRI scan Bone lesion(s) are not considered measurable No CNS metastases

PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Menopausal status: Postmenopausal (surgical or natural) Life expectancy: At least 12 weeks Hematopoietic: Absolute granulocyte count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin less than upper limit of normal (ULN) AST or ALT no greater than 2 times ULN Alkaline phosphatase less than 2 times ULN Renal: Creatinine no greater than 2 times ULN Other: No other malignancy within the past 5 years, except: Adequately treated basal or squamous cell skin cancer Carcinoma in situ of the cervix No other concurrent medical illness that would preclude compliance

PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: No prior chemotherapy for advanced/metastatic disease At least 4 weeks since prior adjuvant chemotherapy Endocrine therapy: See Disease Characteristics No more than one prior progestational hormone therapy regimen for advanced/metastatic disease At least 1 week since prior hormonal therapy No prior tamoxifen or other aromatase inhibitor therapy Radiotherapy: See Disease Characteristics At least 4 weeks since prior radiotherapy Concurrent radiotherapy for symptomatic metastatic lesions allowed Surgery: See Disease Characteristics Other: No other concurrent anticancer therapy No other concurrent investigational therapy

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00004251

Sponsors and Collaborators
NCIC Clinical Trials Group
Study Chair: Anthony Fyles, MD Princess Margaret Hospital, Canada
  More Information

Responsible Party: NCIC Clinical Trials Group Identifier: NCT00004251     History of Changes
Other Study ID Numbers: I126
CDR0000067498 ( Other Identifier: PDQ )
Study First Received: January 28, 2000
Last Updated: September 20, 2012

Keywords provided by Canadian Cancer Trials Group ( NCIC Clinical Trials Group ):
stage IV endometrial carcinoma
recurrent endometrial carcinoma
endometrial adenocarcinoma
endometrial adenosquamous cell carcinoma

Additional relevant MeSH terms:
Endometrial Neoplasms
Uterine Neoplasms
Genital Neoplasms, Female
Urogenital Neoplasms
Neoplasms by Site
Uterine Diseases
Genital Diseases, Female
Antineoplastic Agents
Aromatase Inhibitors
Steroid Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Estrogen Antagonists
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs processed this record on September 21, 2017