Clinical Trials Logo

Clinical Trial Summary

Benign enlargements of the adrenal glands (adrenal adenomas) are frequent in adults. In the general population these adenomas are rare in subjects below 40 years of age but at the age of 60 and 80 years the prevalence is 6 and 8-10 % respectively. Since these adenomas do not causes obvious symptoms they are almost exclusively found incidentally in patients examined radiologically for other reasons than suspected adrenal disease. These enlargements are thus termed adrenal incidentalomas (AI). AI may secrete cortisol and more than 25 percent of patients with an AI have increased cortisol levels called autonomous cortisol secretion (ACS). Such increased secretion of cortisol may cause metabolic complications such as hypertension, high cholesterol, diabetes and cardiovascular disease. Studies have shown that ACS may cause increased mortality. These studies are however small and have not adequately taking other conditions into account which most likely influences the result. The investigators hypothesis is that ACS is linked to increased mortality as the previous studies have shown. The aim is to perform a larger study on patients with adrenal incidentalomas, both with and without ACS, and compare the mortality rates with a control group matched for age and sex. This study may more precisely describe the cardiovascular risk for ACS and define the risk at different levels of ACS.


Clinical Trial Description

Patients with adrenal adenomas may have autonomous cortisol secretion (ACS) that has been linked to hypertension, diabetes, dyslipidemia and cardiovascular disease. Patients with ACS also have been found to have increased mortality. In two studies the excess mortality was caused by cardiovascular disease and in one study by cancer. ACS is diagnosed by increased cortisol (≥50 nmol/l) following 1-mg dexamethasone suppression (DST) often in combination with another confirmatory test such as low ACTH, increased urinary cortisol, increased midnight salivary cortisol or a dexamethasone suppression test with a higher dexamethasone dose. Cortisol secretion from an AI has been considered exclusively autonomous but the investigators have recently shown that a large group of patients with normal results on DST have low ACTH indicating that another factor than ACS may suppress the HPA-axis. The hypothesis is that these patients have an increased sensitivity to ACTH, which results in lower ACTH levels. It has however not been studied whether the increased sensitivity to ACTH is linked to increased cardiovascular morbidity and mortality. Patient data is collected from the patient cards and radiology images. Patients are included according to the eligibility criteria. The patients will be separated in the following groups: 1. No ACS, inhalation steroids or adrenalectomy. 2. ACS/possible-ACS but not treatment with inhalation steroids or adrenalectomy 3. Treatment inhalation steroids but not operated. 4. Unilateral AI and treated with adrenalectomy but no inhalation steroids. The group is separated in patients without ACS and patients with possible ACS/ACS. Three age and gender matched subjects from the general population for every patient will serve as a controls. Outcome data on patients and controls is received from The National Board of Health and Welfare. The control group is achieved from SCB, Sweden (Statistics Sweden). The following outcome data will be collected: Data on mortality, cause of mortality and inpatient and outpatient cardiovascular diagnoses. The study design reduces the risk for bias between the clinical endpoints and the patient's cortisol and ACTH levels. The patient cohorts will be finally defined before the investigators receive the clinical endpoints from The National Board of Health and Welfare. Statistical analysis: The prevalence of the outcome data in the groups of patients will be compared. The investigators will adjusted for differences between the groups in sex, age, smoking, impaired renal function, and existing cardiovascular disease. The following variables will be examined in relation to the outcome data: Cortisol following dexamethasone (≥50 nmol/l, ≥83 nmol/l and ≥138 nmol/l), low basal ACTH (<2.0 pmol/l), DHEAS, the size of the AI and bilateral versus unilateral AI. Study Status: We anticipate to receive the outcome data from The National Board of Health and Welfare in October 2019. The study has thus been slightly delayed. Data on morbidity will only be available until December 31, 2017 due to a delay in reporting to The National Board of Health and Welfare. The secondary outcome measure has been changed to a composite of cardiovascular endpoints. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03919734
Study type Observational
Source Region Skane
Contact
Status Completed
Phase
Start date September 15, 2015
Completion date January 3, 2020

See also
  Status Clinical Trial Phase
Active, not recruiting NCT04860180 - Effect of Surgical or Conservative Approach in Patients With Adrenal Incidentalomas N/A
Recruiting NCT05357456 - Performances on Cognitive Functions and Brain Function and Follow-up After Different Treatments in Patients With Autonomous Cortisol Secretion: a Single-center, Prospective, Observational Study
Enrolling by invitation NCT03474237 - A Prospective Cohort Study for Patients With Adrenal Diseases
Completed NCT04682938 - The Prevalence and Characteristics of Adrenal Incidentaloma
Recruiting NCT04890444 - China Adrenal Disease Registry
Recruiting NCT04616703 - Natural History of NFAI: 10 Year Follow-up Results
Recruiting NCT04328181 - Comparison of Imaging Quality Between Spectral Photon Counting Computed Tomography (SPCCT) and Dual Energy Computed Tomography (DECT) N/A
Recruiting NCT02324647 - Structured Evaluation of adRENal Tumors Discovered Incidentally - Prospectively Investigating the Testing Yield
Recruiting NCT04127552 - Impact of Adrenal IncidenTalomas and Possible Autonomous Cortisol Secretion on Cardiovascular and Metabolic Alterations
Active, not recruiting NCT04917757 - Clinical Outcome of Autonomous Cortisol Secretion in Adrenal Incidentalomas
Completed NCT01949714 - Effect of Chronic Catecholamine Overproduction on Brown Adipose Tissue
Recruiting NCT05237817 - Association Between Stroke and Adrenal Incidentalomas
Recruiting NCT04833192 - Evaluation of New Diagnostic Indicator of Subclinical Hypercortisolism