Ovarian Cancer Screening Pilot Trial in High Risk Women
OBJECTIVES:
- Determine the feasibility of prospective ovarian cancer screening studies within the
Cancer Genetics Network and other NCI ovarian programs for participants who are at high
genetic risk for developing ovarian cancer.
- Identify the logistical issues of screening these participants and their solutions
within this framework.
- Establish normal ranges and distributions of CA125 values over time within and between
high-risk participants, with subclassification by pre- or post-menopausal status,
estrogen-replacement therapy usage, and prior prophylactic oophorectomy.
- Estimate the specificity and positive predictive value of the "risk of ovarian cancer
algorithm" (ROCA) suitable for designing a definitive trial of screening for ovarian
cancer in high-risk participants.
- Establish a longitudinal serum and plasma biorepository for retrospective evaluation of
other promising biomarkers with special relevance to inherited ovarian and breast
cancer risk.
OUTLINE: This is a multicenter study. Participants with 1 or 2 ovaries are assigned to group
A, whereas participants with prior prophylactic bilateral oophorectomy are assigned to group
B (closed to accrual as of 10/18/04).
At baseline, participants who are not eligible by breast cancer susceptibility gene (BRCA)
mutation criteria or family history criteria undergo a probability of having a BRCA mutation
given family history of cancer (BRCAPRO) evaluation. Participants in both groups complete a
questionnaire requesting demographic information and a personal and family health history at
baseline and a questionnaire requesting hospitalization or cancer diagnosis information
after each blood test. Participants in both groups also complete health status
questionnaires once every 3 months for 6 months-7 years. Participants undergo blood draws
for measurement of CA125 levels once every 3 months for 6 months-7 years. For each CA125
measurement, the risk of ovarian cancer algorithm (ROCA) is calculated.
Group A (1 or 2 ovaries at baseline):
- Participants are assigned to 1 of 2 subgroups based on ROCA.
- Subgroup A1: Participants with normal-risk for ovarian cancer (ROCA less than 1%)
continue CA125 screening as above.
- Subgroup A2: Participants with intermediate-risk for ovarian cancer (ROCA more
than 1% but less than 10%) or elevated-risk for ovarian cancer (ROCA more than
10%) undergo transvaginal sonography (TVS). Participants with elevated-risk
undergo an additional blood draw for a confirmatory CA125 level prior to TVS.
Participants with normal TVS continue CA125 screening as above. Participants with
abnormal TVS are referred to a gynecologic oncologist who decides whether standard
clinical intervention for potential ovarian cancer is needed. Participants who are
not referred for standard clinical intervention continue CA125 screening as above.
Participants who are referred for standard clinical intervention, have at least 1
ovary remaining, and are found to have no malignancy continue CA125 screening as
above. Participants who are referred for standard clinical intervention, are found
to have no malignancy, and then undergo prophylactic bilateral oophorectomy
proceed to CA125 screening as in group B below. Participants who are referred for
standard clinical intervention and are found to have malignancy are taken off
study.
Group B (no ovaries at baseline) (closed to accrual as of 10/18/04):
- Participants are assigned to 1 of 2 subgroups based on ROCA.
- Subgroup B1: Participants with normal-risk for ovarian cancer (ROCA less than 5%)
continue CA 125 screening as above.
- Subgroup B2: Participants with elevated-risk for ovarian cancer (ROCA more than
5%) undergo an additional blood draw for a confirmatory CA125 level and are then
referred to a gynecologic oncologist who decides whether standard clinical
intervention for potential ovarian cancer is needed. Participants who are not
referred for standard clinical intervention continue CA125 screening as above.
Participants who are referred for standard clinical intervention and are not found
to have malignancy continue CA125 screening as above. Participants who are
referred for standard clinical intervention and are found to have malignancy are
taken off study.
Patients are followed for clinical diagnosis for 1 additional year.
PROJECTED ACCRUAL: Approximately 2,430 participants will be accrued for this study within 12
months.
Interventional
Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Screening
Sensitivity of early detection for ovarian cancer
Up to one year since last blood test
No
Steven J. Skates, PhD
Study Chair
Massachusetts General Hospital
United States: Institutional Review Board
CDR0000069397
NCT00039559
May 2002
December 2014
Name | Location |
---|---|
M. D. Anderson Cancer Center at University of Texas | Houston, Texas 77030-4009 |