Adjuvant Treatment of Graves´ Ophthalmopathy With NSAID (aGO Study) (aGO)
Primary Purpose
Graves´ Disease
Status
Completed
Phase
Phase 4
Locations
Sweden
Study Type
Interventional
Intervention
Diclofenac
Methimazole
L-thyroxin
Propranolol
Metoprolol
Sponsored by
About this trial
This is an interventional prevention trial for Graves´ Disease focused on measuring ophthalmopathy, prevention, diclofenac
Eligibility Criteria
Inclusion Criteria:
- Graves thyrotoxicosis ( with clinical symptoms)
- Age 18 - 75 year
- TSH = 0.2 or < 0.2 and increased fT4 and/or fT3
- Signed informed consent
Exclusion Criteria:
- Pregnancy or breastfeeding, women in childbearing age should use non- barrier contraceptives
- Previous treatment of thyroid disease
- Thyrostatics before radioiodine treatment
- Hypersensitivity to NSAID or ASA
- Congestive heartfailure
- Impaired renal function defined as p-creatinine > 100 mmol/L
- ASAT or ALAT > 2.5 times the upper limit
- Alcoholism
- Coagulopathy including warfarin treatment
- Thrombocytopenia
- Previous or active gastric ulcera
- Inflammatory bowel disease
Sites / Locations
- Departmenty of Endocrinology, Skane University Hospital
- Department of Endocrinology, Karolinska Hospital
- Department of Internal Medicine, section of Endocrinology, Sodersjukhuset
Arms of the Study
Arm 1
Arm 2
Arm Type
Active Comparator
Other
Arm Label
diclofenac
without diclofenac
Arm Description
12 months treatment with diclofenac 50 mg 1x2 in addition to regular treatment for thyrotoxicosis.
12 months treatment without diclofenac in addition to regular treatment for thyrotoxicosis.
Outcomes
Primary Outcome Measures
The frequency of ophthalmopathy after 24 months as judged by the following clinical signs
Optic nerve dysfunction 0. No 1. Yes Eye-lid edema 0. No 1. Yes Chemosis 0. No 1. Yes Conjunctival injection 0. No 1. Yes Exophthalmos 0. No 1. Yes Hertel - base right left Eye muscle dysfunction 0. No 1. Yes Corneal ulcers 0. No 1. Yes
Sum:
Ophthalmopathy is present if the patient has one sign or more.
Secondary Outcome Measures
Activity of ophthalmopathy as judged by clinical activity score (CAS)
Spontaneous retrobulbar pain 0. No 1. Yes Painfull eye-movements 0. No 1. Yes Eye-lid erythema 0. No 1. Yes Conjunctival injection 0. No 1. Yes Chemosis 0. No 1. Yes Swollen caruncula 0. No 1. Yes Eye-lid edema or swolleness 0. No 1. Yes
Sum:
The time from thyrotoxicosis to ophthalmopathy.
The frequency of corticosteroid requiring ophthalmopathy
Criteria for start of steroid treatment are: 1. Risk of corneal ulcers with or without exophthalmos 2. Double vision within 30 degrees 3. Optic nerve dysfunction.
Full Information
1. Study Identification
Unique Protocol Identification Number
NCT01458600
Brief Title
Adjuvant Treatment of Graves´ Ophthalmopathy With NSAID (aGO Study)
Acronym
aGO
Official Title
Adjuvant Treatment of Graves´ Ophthalmopathy With NSAID (aGO Study)
Study Type
Interventional
2. Study Status
Record Verification Date
February 2016
Overall Recruitment Status
Completed
Study Start Date
September 2006 (undefined)
Primary Completion Date
February 2016 (Actual)
Study Completion Date
February 2016 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor-Investigator
Name of the Sponsor
Mikael Lantz
4. Oversight
Data Monitoring Committee
Yes
5. Study Description
Brief Summary
AGO study - adjuvant treatment, with NSAID, of endocrine ophthalmopathy in Graves´ disease
Background - Already at diagnosis of Graves disease approximately 98% of the patients have morphological changes of the retrobulbar tissue concordant with ophthalmopathy. Factors known to induce clinical symptoms of ophthalmopathy are mainly unknown. An interesting observation is that a patient with stable and inactive Graves´ disease developed ophthalmopathy when treated with a glitazone due to diabetes type 2. Glitazones have been shown to increase differentiation of orbital preadipocytes to mature adipocytes. Glitazones are PPAR-gamma agonists and recently diclofenac have been shown to interact with PPAR-gamma in physiological concentrations. Other non-steroidal antiinflammatory drugs, NSAID, like indomethacin lack this effect. In addition, diclofenac inhibit synthesis of prostaglandins which also may be of importance because the natural ligand to PPAR-gamma is prostaglandin J. Inflammation and adipogenesis are hallmarks of the pathological process in Graves ophthalmopathy and NSAID like diclofenac may affect both. There is only one earlier study demonstrating effects of NSAID (indomethacin) in 7 patients with effects on soft tissue symptoms, eye muscle symptoms and eye protrusion.
Aim - to investigate if diclofenac can prevent ophthalmopathy and/or progress of ophthalmopathy.
Specific aims:
To study the frequency of clinical ophthalmopathy in Graves´ disease after 12 months treatment with or without diclofenac.
To study the frequency of progress of clinical signs and symptoms in ophthalmopathy after 12 months treatment with or without diclofenac.
To study the frequency of optic neuropathy in clinical ophthalmopathy after 12 months treatment with or without diclofenac.
Study plan and randomisation -
150 patients with newly diagnosed Graves´disease without ophthalmopathy will be treated with anti-thyroid drugs and L-thyroxin (block and replace) according to clinical routine for 18 months. These patients will be randomized to diclofenac 50 mg twice daily or not for 12 months.
Detailed Description
Adjuvant treatment of Graves´ ophthalmopathy with NSAID (aGO study)
Background.
When performing MRI / CT / ultrasound of the orbital room 98 % of the patients with Graves´ thyrotoxicosis exhibit changes of ophthalmopathy without clinical symptoms of endocrine ophthalmopathy (Burch 1993). Thus, almost all patients with Graves´ disease are at risk to develop clinical ophthalmopathy. Tobacco exposition and treatment with radioiodine ar known factors that trigger ophthalmopathy but other factors are poorly defined. However it is well known that both environmental and genetic factors is of importance because monozygotic twins show a concordance of 20 - 50 %. One interesting observation is a patient with inactive and stable Graves´ ophthalmopathy who developed clinical ophthalmopathy when treated with pioglitazone due to type 2 diabetes (Starkey 2003). One pathogenic mechanism in Graves´ ophthalmopathy is increased orbital adipogenesis and glitazones are known to increase the volume of subcutaneous adipose tissue. Orbital fibroblasts from patients with ophthalmopathy have been shown to differentiate to adipocytes in response to rosiglitazone (Valyasevi 2002). Glitazones are PPAR-gamma agonists and it could be of interest to study effects of PPARgamma antagonists in endocrine ophthalmopathy. Diclofenac has been shown to interact with PPAR-gamma in physiological concentrations and to antagonise PPAR-gamma mediated effects like adipogenesis of the preadipocyte cell line 3T3-L1(Adamsson 2002, Vondrichova 2007). In addition diclofenac is a well-known inhibitor of cyclooxygenases with effects on the synthesis of prostaglandins in for example fibroblasts, lymphocytes and monocytes. The natural ligand for PPAR-gamma is prostaglandin J (Forman 1995). To conclude, NSAID like diclofenac may affect both synthesis of prostaglandins and concomittantly antagonise the effects of the natural ligand to PPAR-gamma, prostaglandin J2. We have recently demonstrated upregulation of immediate early genes, including COX-2, with important functions in adipogenesis in patients with severe ophthalmopathy (Lantz 2005). Previously there is only one study published on treatment of ophthalmopathy with NSAID ,indometacin (Amemia 1982). Although only 7 patients were studied there were effects on soft tissue symptoms, eye protrusion and eye muscle symptoms. Due to the knowledge of retrobulbar morphological changes in patients with Graves´ thyrotoxicosis without clinical ophthalmopathy it may be of importance to interact as early as possible. We therefore plan to start a randomised single-blind study where patients will receive diclofenac for 12 months in parallel with the standard treatment for thyrotoxicosis.
Trial design
The trial is a multi-center (Malmö and Stockholm), controlled, single-blind design and the subjects are randomised to thyrostatics with and without diclofenac by a body independent from the study The total duration of the study is 24 months with 12 months treatment with or without diclofenac in addition to regular treatment for thyrotoxicosis. The follow up period will be 12 months. Decision of the main treatment of thyrotoxicosis is based on clinical terms according to routines in Malmö and Stockholm and is given according to the protocol of TT96. Patients are randomised for adjuvant therapy with or without diclofenac after choice of main treatment for thyrotoxicosis.
2.1 Monitoring
The study will be monitored by a science nurse with formal education in monitoring clinical trials.
Objectives
The primary objective
To find out if diclofenac can prevent development of ophthalmopathy in patients with Graves´ disease.
The secondary objectives are:
Determine the activity at diagnosis of ophthalmopathy
Determine the time from thyrotoxicosis to ophthalmopathy
Determine the frequency of patients with corticosteroid requiring ophthalmopathy
3.1 Endpoints
The objectives of the trial will be examined by the following endpoints:
Efficacy
Primary endpoint:
The frequency of ophthalmopathy after 24 months as judged by the following clinical signs:.
Optic nerve dysfunction 0. No 1. Yes Eye-lid edema 0. No 1. Yes Chemosis 0. No 1. Yes Conjunctival injection 0. No 1. Yes Exophthalmos 0. No 1. Yes Hertel - base right left Eye muscle dysfunction 0. No 1. Yes Corneal ulcers 0. No 1. Yes
Summa:
Ophthalmopathy is present if the patient has one sign or more.
Secondary endpoints:
I. Activity of ophthalmopathy as judged by clinical activity score (CAS)
Spontaneous retrobulbar pain 0. No 1. Yes Painful eye-movements 0. No 1. Yes Eye-lid erythema 0. No 1. Yes Conjunctival injection 0. No 1. Yes Chemosis 0. No 1. Yes Swollenness of caruncula 0. No 1. Yes Eye-lid edema or swollenness 0. No 1. Yes
Sum:
II. The time from thyrotoxicosis to ophthalmopathy.
III. The frequency of corticosteroid requiring ophthalmopathy. Criteria for start of steroid treatment are: 1. Risk of corneal ulcers with or without exophthalmos 2. Double vision within 30 degrees 3. Optic nerve dysfunction.
3.2 Treatment of subjects
All patients that fulfill the inclusion criteria and accept participation in the study will after decision of main treatment for thyrotoxicosis be randomised to treatment with or without diclofenac. Patients will receive diclofenac 50 mg 1x2 for 12 months in addition to standard treatment of thyrotoxicosis according to the following routines.
Thyrostatics
Patients will receive p.o. methimazole (Thacapzol) 5 mg 3x2 supplemented with L-thyroxine (Euthyrox) after 14 days, initially for the first two weeks 0.5x1, and thereafter 1x1. If the patient react with allergic symptoms to methimazole, treatment is changed to propylthiouracil (Tiotil) 50 mg 3x3. Adjustment of L-thyroxine is done with help of thyroid laboratory parameters (TSH, fT4) and titration after clinical response. The dose of thyrostatics is not reduced and if necessary on demand the dose is increased. If necessary, a beta-blocker is used, primarily propranolol (Inderal) 40 mg 1x1-3 or metoprolol (Seloken) 50 mg 1x1-3 which can be increased depending of patients response.
3.3 Measurement of laboratory parameters
All laboratory analyses will be performed at the department of Clinical Chemistry, Malmö University Hospital and at the department of Clinical Chemistry Karolinska University Hospital.
Rationale for treatment
Adjuvant treatment already at diagnosis of thyrotoxicosis has been chosen in the aim to prevent clinical ophthalmopathy due to the fact that morphological changes of ophthalmopathy in the orbital room exist in Graves´ thyrotoxicosis in up to 98% of the patients without clinical symptoms. The long period of time for treatment with diclofenac is justified by the knowledge that the majority of patients at risk for developing ophthalmopathy exhibit clinical symptoms within 18 months.
Subjects
5.1 Number of patients
A total of 150 statistically analysable patients (the total number of patients included will be 10% higher to compensate for loss of subjects) , with 75 in each treatment arm will be included in the study.
Visits - summary
S = Screening tests, TSH, fT4, fT3, Thyroid Receptor antibodies (TRAK), Tissue Peroxidase antibodies (TPO-ak), Hb, leukocytes, thrombocytes (trc), diff.-leukocytes, fasting B-glucose, HbA1c, Calcium, Albumin, Sodium, Potassium, Creatinine, ASAT, ALAT, ALP, GT, Bil, PK, APTT, U-iodine R = Routine tests, TSH, fT4, fT3, Hb, Creatinine R+ = Routine tests + ASAT, ALAT, ALP, GT, Bil, TRAK, trc, leukocytes, diff. R++ = Routine tests + + Fasting B-glucose, U-iodine B = Biobank samples according to GD2002 (serum, plasma, buffy coat) C = Clinical control - vital signs, physical examination, weight, eye status O = Ophthalmologist - eye status D = Dietary questionnaire
Time
-1 week S, B, C, O, D 0 week C 6 week R, C 3 months R+, B, C 6 months R, B, C 9 months R+, B, C 12 months R++, B, C, O, D 15 months R+, B, C 18 months R, B, C 21 months R, B, C 24 months R++, B, C, O, D
6.1 Screening
Subjects attend to the first screening visit one week before randomisation. Before screening the participants have been provided with written information of the trial. The subjects will be informed, orally and in writing of their responsibilities / rights during the trial as well as possible advantages / disadvantages of the trial. Subjects who wish to participate will be asked to sign and date an Informed Consent Form prior to any trial-related activity.
Subjects will be allocated a subject number and the following will be performed and recorded:
Assessment of inclusion and exclusion criteria
Demographic information
Thyroid history
General physical examination
Measurement of body weight
Vital signs
Blood sampling
Pregnancy test will be performed as per judgement of the investigator
Concomitant illness and medication.
Information and choice of the routine treatments for thyrotoxicosis
Actual eye status, performed by an ophthalmologist within 1 week
An appointment will be made for visit w0
6.2 Randomization visit, w0
Laboratory data and other information gathered at screening visit is reviewed and the final decision regarding participation in the trial is taken.
The subject will now be randomised to adjuvant treatment with or without diclofenac. The randomization procedure will be designed by an independent body.
7. Trial material
The trial is not performed in direct collaboration with the drug manufacturers.
9. Statistical considerations
The primary evaluation variable is the proportion of present or new cases of endocrine ophthalmopathy. The null-hypothesis is that there is no differences between the two treatment alternatives according to this proportion (H0:pi 1 = pi 2). The number of patients in each group when performing a two-side significance test on the 5% level for different demands on power and different values in the given proportions of the hypothesis is shown in a separate diagram. With 72 patients in each group there is 80 % chance (power) to get significant results if the real difference is 0.2. The hypothesis is tested with Mantel Haenzels test and further analyses performed with logistic regression which take into consideration the effect of prognostic factors.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Graves´ Disease
Keywords
ophthalmopathy, prevention, diclofenac
7. Study Design
Primary Purpose
Prevention
Study Phase
Phase 4
Interventional Study Model
Parallel Assignment
Masking
Outcomes Assessor
Allocation
Randomized
Enrollment
65 (Actual)
8. Arms, Groups, and Interventions
Arm Title
diclofenac
Arm Type
Active Comparator
Arm Description
12 months treatment with diclofenac 50 mg 1x2 in addition to regular treatment for thyrotoxicosis.
Arm Title
without diclofenac
Arm Type
Other
Arm Description
12 months treatment without diclofenac in addition to regular treatment for thyrotoxicosis.
Intervention Type
Drug
Intervention Name(s)
Diclofenac
Other Intervention Name(s)
T Diclofenac T 50 mg Ratiopharm
Intervention Description
T Diclofenac 50 mg twice daily for 12 months
Intervention Type
Drug
Intervention Name(s)
Methimazole
Other Intervention Name(s)
Thacapzol (Recip)
Intervention Description
T Methimazole 5 mg 3x2 for 18 months
Intervention Type
Drug
Intervention Name(s)
L-thyroxin
Other Intervention Name(s)
Euthyrox (Merck)
Intervention Description
L-thyroxin approximately 100 to 200 micrograms/day. The dose is adjusted to reach euthyroidism during concomitant treatment with methimazole for 18 months
Intervention Type
Drug
Intervention Name(s)
Propranolol
Other Intervention Name(s)
Inderal (AstraZeneca)
Intervention Description
T Propronalol 40mg 1x1-3 during during 1-3 weeks until the patient has responded to thyrostatics
Intervention Type
Drug
Intervention Name(s)
Metoprolol
Other Intervention Name(s)
Seloken (AstraZeneca)
Intervention Description
T Metoprolol 50 mg 1x3 for 1-3 weeks until the patient has responded to thyrostatics
Primary Outcome Measure Information:
Title
The frequency of ophthalmopathy after 24 months as judged by the following clinical signs
Description
Optic nerve dysfunction 0. No 1. Yes Eye-lid edema 0. No 1. Yes Chemosis 0. No 1. Yes Conjunctival injection 0. No 1. Yes Exophthalmos 0. No 1. Yes Hertel - base right left Eye muscle dysfunction 0. No 1. Yes Corneal ulcers 0. No 1. Yes
Sum:
Ophthalmopathy is present if the patient has one sign or more.
Time Frame
24 months
Secondary Outcome Measure Information:
Title
Activity of ophthalmopathy as judged by clinical activity score (CAS)
Description
Spontaneous retrobulbar pain 0. No 1. Yes Painfull eye-movements 0. No 1. Yes Eye-lid erythema 0. No 1. Yes Conjunctival injection 0. No 1. Yes Chemosis 0. No 1. Yes Swollen caruncula 0. No 1. Yes Eye-lid edema or swolleness 0. No 1. Yes
Sum:
Time Frame
0,12,24 months
Title
The time from thyrotoxicosis to ophthalmopathy.
Time Frame
24 months
Title
The frequency of corticosteroid requiring ophthalmopathy
Description
Criteria for start of steroid treatment are: 1. Risk of corneal ulcers with or without exophthalmos 2. Double vision within 30 degrees 3. Optic nerve dysfunction.
Time Frame
24 months
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
75 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
Graves thyrotoxicosis ( with clinical symptoms)
Age 18 - 75 year
TSH = 0.2 or < 0.2 and increased fT4 and/or fT3
Signed informed consent
Exclusion Criteria:
Pregnancy or breastfeeding, women in childbearing age should use non- barrier contraceptives
Previous treatment of thyroid disease
Thyrostatics before radioiodine treatment
Hypersensitivity to NSAID or ASA
Congestive heartfailure
Impaired renal function defined as p-creatinine > 100 mmol/L
ASAT or ALAT > 2.5 times the upper limit
Alcoholism
Coagulopathy including warfarin treatment
Thrombocytopenia
Previous or active gastric ulcera
Inflammatory bowel disease
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Mikael Lantz, MD
Organizational Affiliation
Department of Endocrinology, Skane University Hospital, Malmö, Sweden
Official's Role
Study Director
First Name & Middle Initial & Last Name & Degree
Jan Calissendorff, MD
Organizational Affiliation
Department of Endocrinology, Karolinska Hospital, Stockholm, Sweden
Official's Role
Principal Investigator
First Name & Middle Initial & Last Name & Degree
Ove Törring, MD
Organizational Affiliation
Department of Internal Medicine, section of Endocrinology, Sodersjukhuset, Stockholm
Official's Role
Principal Investigator
Facility Information:
Facility Name
Departmenty of Endocrinology, Skane University Hospital
City
Malmö
Country
Sweden
Facility Name
Department of Endocrinology, Karolinska Hospital
City
Stockholm
Country
Sweden
Facility Name
Department of Internal Medicine, section of Endocrinology, Sodersjukhuset
City
Stockholm
Country
Sweden
12. IPD Sharing Statement
Learn more about this trial
Adjuvant Treatment of Graves´ Ophthalmopathy With NSAID (aGO Study)
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