Cortisol, a glucocorticoid (GC) hormone secreted from the adrenal glands, is essential for survival. Cortisol also possesses anti-inflammatory actions and GC formulations (prednisolone) are used to treat many inflammatory diseases and conditions. Indeed, three percent of the Danish population (≈ 180.000 individuals) redeems at least one prescription of synthetic GC per year and at least 20,000 patients annually discontinue GC treatment. Pharmacological GC therapy suppresses endogenous cortisol production and thereby induce relative adrenal insufficiency (GIA). The risk of GIA as determined by the adrenal corticotrophic hormone (ACTH) stimulation test has previously been reported to ≈ 25 %, but testing after GC treatment is not routinely performed. Indeed, new evidence suggest that the risk of GIA after planned cessation of prednisolone treatment for polymyalgia rheumatic (PMR) or giant cell arteritis (GCA) is substantially lower, probably 2%. The reason for this discrepancy is undoubtedly selection bias in the previous publications and the use of inaccurate cortisol assays. At the same time, however, it was observed that 25% exhibited pronounced symptoms of adrenal insufficiency based on a questionnaire specific for detecting symptoms of adrenal insufficiency, the so-called AddiQoL-30. Concomitantly, the basal cortisol levels in the same group were significantly lower as compared to the group, who exhibited milder or no symptoms attributable to adrenal insufficiency. This observation aligns with the clinical experience that PMR/GCA patients often complain of fatigue after planned cessation of prednisolone treatment. This often occurs in the absence of objective symptoms or signs of residual PMR/GCA disease activity. The scenario has been designated as "the steroid withdrawal syndrome". This may represent a state of relative adrenal insufficiency prompted by long term, high dose prednisolone treatment. The proper way to tackle this clinical conundrum is to perform a proper randomized trial, which so far has not been conducted. Therefore, investigators of this study will perform the first placebo-controlled randomised controlled trial (RCT) in patients with PMR and GCA after planned cessation of GC treatment. Investigators argue that neither watchful waiting nor routine hydrocortisone replacement are infallible. The study will be the first evidence-based guidance and aid to GIA patients and thus meet an important need for many thousand patients.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
100
Patients are randomized to oral hydrocortisone (10 mg twice daily) or placebo for 16 weeks.
Patients are randomized to oral hydrocortisone (10 mg twice daily) or placebo for 16 weeks.
Department of Endocrinology and Internal Medicine, Aarhus University Hospital
Aarhus, Denmark
RECRUITINGDepartment of Nephrology and Endocrinology, Rigshospitalet
Copenhagen, Denmark
RECRUITINGDepartment of Endocrinology, Odense University Hospital
Odense, Denmark
RECRUITINGAdrenal insufficiency symptoms
Symptoms measured by the Addison's disease-specific quality of life questionnaire (AddiQoL-30), which consists of 30 questions focusing on common symptoms of adrenal insufficiency related to quality of life. Each item belongs to one of following subthemes: fatigue, symptoms, emotions and miscellaneous. Each question can be scored from 1 (none of the time/strongly disagree) to 6 (all of the time/strongly agree) and yields a score between 1 - 4 arbitrary units. This adds up to a total score ranging from 30 (worst quality of life) to 120 (best quality of life).
Time frame: Screening and 16 weeks
Patient-reported symptoms via mobile phone app - PRO-CTCAETM
Symptoms of fatigue, nausea, dizziness, and "feeling generally unwell" assessed by the Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events (PRO-CTCAETM). Each symptom is evaluated in terms of frequency and severity with a score from 1 (never/nothing) to 5 (almost constant/very strong).
Time frame: Patients are asked daily throughout the study period.
Patient-reported symptoms via mobile phone app - EMA-MFI
Four statements regarding diurnal fatigue based on the validated General Fatigue Scale from the Multidimensional Fatigue Inventory (MFI-20) adapted for Ecological Momentary Assessments (EMA). Each statement is answered by a visuel scale from left (yes, that is correct) to right (no, that is not correct).
Time frame: In situations of stress, participants are asked to answer the EMA items 5 times daily at semi-randomised time points, for 3 days.
Cushing quality of life (CushingQoL)
Cushing quality of life (CushingQoL) is a disease-specific questionnaire for patients with endogenous cortisol excess. It consists of 12 items about mental and physical adverse effects of cortisol excess. The total score os normalised to a scale ranging from 0 (lowest quality of lige) to 100 (highest quality of life).
Time frame: Baseline and 16 weeks
The short form 36 (SF-36)
SF-36 is a genereic qeustionnaire evaluating general health perception with 36 items related to 8 dimensions: physical functioning for the limitation in performing all physical activities; role physical for problems with work or other daily activities; bodily pain; general health; vitality; social functioning; role emotional; and mental health.
Time frame: Baseline and 16 weeks
Sleep Quality Scale (SQS)
SQS is a single item questionnaire consisting of a numerical rating scale to evaluate the overall sleep quality over the last 7 nights. The scale is ranging from 0 (terrible sleep) to 10 (excellent sleep).
Time frame: Baseline and 16 weeks
International Physical Activity Questionnaire, short form, 7 days (IPAQ-7s)
The IPAQ-7s records types and intensity of physical activity. The questionnaire consists of seven open items covering 4 types of activity (energetic activity, moderate activity, walk, and sitting). The first three is measured in "number of days per week", "hours per day", and "minutes per day". The last activity (sitting) is measured in "hours per day" and "minutes per day".
Time frame: Baseline and 16 weeks
Incidence of adrenal crises
Incidence of adrenal crises, including information on hospitalizations, number of sick days, diagnoses and therapy.
Time frame: 16 weeks
Cardiovascular health - Blood pressure
Office blood pressure (OBP) and automated blood pressure (AOBP). Blood pressure measurements will be performed with (OBP) and without (AOBP) the presence of investigator. Unit is mmHg.
Time frame: Baseline and 16 weeks
Cardiovascular health - PWV
Arterial stiffness and pulse wave velocity (PWV). PVW is measured three times, unit is m/s.
Time frame: Baseline and 16 weeks
Body composition - DXA scan
Body composition by dual X-ray absorptiometry (DXA) scan. Body composition is measured in the distribution of fat and lean mass in grams (g).
Time frame: Only performed at baseline visit
Bone quality - DXA scan
Bone quality by dual X-ray absorptiometry (DXA) scan. Bone mineral density (g/cm\^2) and T-score of the lumbal spine and hip.
Time frame: Only performed at baseline visit
HR-pQCT
High-resolution peripheral quantitative computed tomography (HR-pQCT) in order to obtain three-dimensional BMD.
Time frame: Only performed at baseline visit
Muscle function and physical activity - Handgrip strength.
Handgrip strength is measured in kg using a hydraulic hand dynamometer.
Time frame: Baseline and 16 weeks.
Muscle function and physical activity - TUG
Timed Up and Go (TUG) test measures the time taken to stand up, walk three meters in a straight line, and immediately return to the chair.
Time frame: Baseline and 16 weeks.
Muscle function and physical activity - SPPB
The Short Physical Performance Battery including Chair Rising Test (SPPB) evaluates the lower extremity function of the patient.
Time frame: Baseline and 16 weeks.
Muscle function and physical activity - Actigraph
Patients are asked to wear an accelerometer device on their non-dominant wrist to measure physical activity and sleep. Time of physical activity and sleep will be measured in minutes.
Time frame: Baseline and 16 weeks, duration: 7 days
Muscle function and physical activity - Muscle power
The muscle power of the dominant arm and upper back, as well as elbow, hip, and knee extension and flexion, are evaluated by use of a exercise machine. Power is measured in watt.
Time frame: Baseline and 16 weeks.
Muscle function and physical activity - Isometric muscle strength
The isometric muscle strength of the dominant arm and upper back, as well as elbow, hip, and knee extension and flexion, are evaluated by use of a exercise machine. Strength is measured in kg.
Time frame: Baseline and 16 weeks.
Normalization of adrenal function evaluated by SST
Short Synacthen® test. Cortisol is measured in nmol/L before (0 min) and after (30 min) administration of 1 ml Synacthen (0.25 mg/ml).
Time frame: Screening/Baseline and 16 weeks
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