Clinical Trial: Hormone Therapy in Preventing Endometrial Cancer in Patients With a Genetic Risk For Hereditary Nonpolyposis Colon Cancer

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: Modulation Of Putative Surrogate Endpoint Biomarkers In Endometrial Biopsies From Women With HNPCC

Brief Summary: Randomized phase II trial to compare two different hormone therapy regimens in preventing endometrial cancer in women who have a genetic risk for hereditary nonpolyposis colon cancer. Hormone therapy may prevent the development of endometrial cancer in women with a genetic risk for hereditary nonpolyposis colon cancer. It is not yet known which hormone therapy regimen is more effective in preventing endometrial cancer.

Detailed Summary:

PRIMARY OBJECTIVES:

I. The primary objective is to evaluate the effect of progesterone therapy versus combination estrogen and progesterone therapy on potential surrogate endpoint biomarkers (SEBs) relevant to endometrial carcinogenesis.

II. To evaluate changes in histology and ultrasound appearance of the endometrium in women with HNPCC after 3 months of progesterone therapy versus combination estrogen and progesterone therapy compared with baseline.

III. To establish a point estimate of the baseline frequency of endometrial abnormalities looking at histological and molecular markers in a cohort of females carrying an HNPCC gene mutation.

OUTLINE: Patients are randomized to 1 of 2 arms.

All patients undergo a baseline transvaginal ultrasound and endometrial biopsy.

Arm I: Patients receive medroxyprogesterone intramuscularly once on day 1. Approximately 90 days after the injection, patients undergo a repeat transvaginal ultrasound and endometrial biopsy.

Arm II: Patients receive oral contraceptive pills (OCP) comprising ethinyl estradiol and norgestrel once daily on days 1-21. Treatment repeats every 28 days for 3-4 courses (3-4 packs of OCP) in the absence of unacceptable toxicity. Approximately 1 week after starting the fourth pack of OCP, patients undergo a repeat transvaginal ultrasound and endometrial biopsy.

Patients are followed at 6 weeks and are encouraged to return in 6 months to participate in continued endometrial screening.

Sponsor: National Cancer Institute (NCI)

Current Primary Outcome: Change in potential SEBs relevant to endometrial carcinogenesis. [ Time Frame: From baseline to completion of hormone therapy ]

Original Primary Outcome:

Current Secondary Outcome: Changes in histology and ultrasound appearance of the endometrium in women with HNPCC [ Time Frame: From baseline to 3 months ]

Original Secondary Outcome:

Information By: National Cancer Institute (NCI)

Dates:
Date Received: April 9, 2002
Date Started: February 2002
Date Completion:
Last Updated: May 2, 2013
Last Verified: April 2013