Sex Steroid Hormones and Risk of CHD in Women

NCT ID: NCT00006407

Last Updated: 2016-03-16

Basic Information

• Recruitment Status: COMPLETED
• Study Classification: OBSERVATIONAL
• Study Start Date: 2000-09-30
• Study Completion Date: 2004-07-31

Brief Summary

To investigate the relationship between endogenous estrogen and androgen levels and risk of coronary heart disease among postmenopausal women in the Women's Health Initiative-Observational Study (WHI-OS).

Detailed Description

BACKGROUND:

The role of endogenous gonadal hormones in the etiology of atherosclerotic disease needs clarification. Previous studies of women have been small, rarely prospective, and had other methodological problems. Results have been inconsistent. Observational and clinical trial data on exogenous hormones, also inconsistent, are probably irrelevant to endogenous hormonal effects.

On the other hand, despite hormonal differences being evoked as the reason for women having less atherosclerotic disease than men, it is not apparent from existing data that between-person variability in endogenous hormones is likely to be a strong risk factor for atherosclerotic disease in women. Furthermore, the atherosclerotic process begins early in life, and postmenopausal hormone differences are only one aspect of possible hormonal effects on disease. Nevertheless, this study has the potential to provide important new information on the role of endogenous hormones on atherosclerotic disease in postmenopausal women.

DESIGN NARRATIVE:

The study used a nested-case control design to measure baseline sex steroid hormone levels (serum total and free estradiol, estrone sulfate, total and free testosterone, dehydroepiandrosterone sulfate) and sex hormone binding globulin to determine whether these predicted subsequent risk of coronary heart disease (CHD). A total of 350 case subjects and 350 control subjects were selected from women who were free from cardiovascular disease and cancer at study entry and were not using hormone replacement therapy at baseline. Cases were those women who subsequently developed a documented myocardial infarction or underwent coronary artery revascularization (N=350), while control subjects were selected from study participants who remained free from CHD during follow-up. Controls were matched 1:1 for age, ethnicity, smoking and follow-up time. The study also examined correlations between sex steroid hormone levels and other previously funded analyses of biomarkers, including thrombotic and inflammatory markers, lipoproteins, fasting glucose and insulin. Detailed baseline data including anthropometrics and behavioral factors allowed control for confounding.

The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.

Conditions

Cardiovascular Diseases; Heart Diseases; Coronary Disease; Postmenopause; Coronary Arteriosclerosis

Eligibility Criteria

Inclusion Criteria

No eligibility criteria

• Minimum Eligible Age: 50 Years
• Maximum Eligible Age: 79 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: No

Sponsors

National Heart, Lung, and Blood Institute (NHLBI)

NIH

Sponsor Role: lead

Principal Investigators

Kathryn Rexrode

Role:

Brigham and Women's Hospital

Other Identifiers

R01HL065531

Identifier Type: NIH

Identifier Source: secondary_id

View Link

932

Identifier Type: -

Identifier Source: org_study_id