- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02203682
Doxycycline Treatment in Mild Thyroid-Associated Ophthalmopathy
The Effect of Subantimicrobial Dose Doxycycline in Mild Thyroid-Associated Ophthalmopathy
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Thyroid-Associated Ophthalmopathy is an autoimmune disease that can be treated by corticosteroids and surgery. But they often cause severe side-effects and are usually used for treating moderate-sever and sight-threatening TAO. Wait and see will be the first choice for the patient with mild TAO.
Subantimicrobial dose (SD) doxycycline displays a strong anti-inflammatory and immunomodulatory function, which is independent of its antibiotic properties. Data from clinical trials demonstrated that SD doxycycline was effective in moderating inflammation in a variety of autoimmune diseases, such as rheumatoid arthritis, multiple sclerosis, rosacea and periodontitis.
We propose to test the effect of subantimicrobial dose doxycycline for mild TAO.
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
Contacts and Locations
Study Contact
- Name: Dan Liang, MD
- Phone Number: 0086-20-87331766
- Email: linml0754@gmail.com
Study Locations
-
-
Guangdong
-
Guangzhou, Guangdong, China, 510060
- Recruiting
- Zhongshan Ophthalmic Center
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Clinical diagnosis of Thyroid-associated ophthalmopathy
- Mild TAO
- Normal serum free thyroxine and free triiodothyronine concentrations
- No previous specific therapy for TAO, except for local measures
- Written informed consent is obtained
Exclusion Criteria:
- Pregnant females as determined by positive (serum or urine) hCG test at screening or prior to dosing, or lactating females
- Uncontrolled diabetes or hypertension
- History of mental / psychiatric disorder
- Hepatic dysfunction (Alb, AST, ALT and Alkaline phosphates levels must be within normal range for eligibility)
- Renal impairment (Urea and Creatinine levels must be within normal range)
- Tetracycline allergy or intolerance
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Doxycycline
Tablets Doxycycline 50 mg PO per day for 12 weeks
|
Tab. Doxycycline 50 mg PO per day for 12 weeks
|
Placebo Comparator: Placebo
Tablet placebo for 12 weeks
|
Tablet placebo for 12 weeks
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
the rate of improvement
Time Frame: 12 weeks
|
Improvement was defined that at least one item was met in the study eye without deterioration in any item of both eyes:
|
12 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Clinical Activity Score (CAS)
Time Frame: 4weeks and 12 weeks
|
Patients will be assessed according to the 7 item European Group on Graves' Ophthalmopathy (EUGOGO) amended Clinical Activity Score (CAS) For each item present, one point is given. The sum of the points is the total score ranges from 0 to 7.
|
4weeks and 12 weeks
|
Proptosis measured by Hertel instrument
Time Frame: 4weeks and 12 weeks
|
For the assessment of proptosis, the same Hertel instrument and ideally the same observer should be used on each occasion.
Additionally the same intercanthal distance (ICD) should be used on each occasion.
The Hertel values will be measured for each eye at each visit and repeated three times.
The mean value is recorded.
Proptosis ranges from 10mm to 30mm.
|
4weeks and 12 weeks
|
Eyelid aperture
Time Frame: 4weeks and 12 weeks
|
For the assessment of eyelid aperture, the same millimeter ruler should be used by the same observer.
These measurements are repeated three times, and the mean value is recorded.
When performed this assessment, participants should relax their eyes and keep looking ahead and the observers should keep the ruler perpendicular to their eyelid.
|
4weeks and 12 weeks
|
Lid retraction
Time Frame: 4weeks and 12 weeks
|
For the assessment of eyelid aperture, the same millimeter ruler should be used by the same observer.
The upper eyelid positions above (positive value) and below (negative value) the superior limbus and The lower eyelid positions above (positive value) and below (negative value) the posterior limbus were measured in millimeters in primary position.
These measurements are repeated three times, and the mean value is recorded.
|
4weeks and 12 weeks
|
Lid lag
Time Frame: 4weeks and 12 weeks
|
For the assessment of eyelid aperture, the same millimeter ruler should be used by the same observer.
Lid lag is defined that the lid margin distance in downgaze.
The upper eyelid positions above (positive value) and below (negative value) the superior limbus were measured in millimeters.
|
4weeks and 12 weeks
|
Eye motility
Time Frame: 4weeks and 12 weeks
|
The head of each participant is adjusted to fix on the modified perimeter to set the visual axis of the examined eye on the center of the optimal visual target in visual chart.
The other eye should be covered.
The examined eye should follow the movement of the visual target until the participant cannot identify the exact visual target in vertical and horizontal directions.
And the extreme scales of these four directions are obtained.
These measurements are repeated three times, and the mean value is recorded.
|
4weeks and 12 weeks
|
Graves' Ophthalmopathy Quality of Life Scale
Time Frame: 4weeks and 12 weeks
|
The Graves' Ophthalmopathy Quality of Life (GO-QOL) questionnaire (Terwee & al, 1998) includes visual functioning and psychosocial functioning. A raw score of each part is calculated by adding each score of 8 question, namely 1, 2, or 3 for each question which means marked, mild, or absent limitation, the final score ranging from 0 (full limitation) to 100 (no limitation) is calculated as the following rule: (raw score - 8) ÷ 16 × 100]. GO-QOL will be completed at screening, weeks 0, 4, 12. were also recorded to assess activity of TAO and impact on quality of life respectively. The GO-QOL is a 16 item self-administered questionnaire used to assess the perceived effects of TAO by the patients on their daily physical and psychosocial functioning. |
4weeks and 12 weeks
|
C-OSDI
Time Frame: 4weeks and 12 weeks
|
The Ocular Surface Disease Index (OSDI), developed by the Outcomes Research Group at Allergan Inc (Irvine, Calif), is a 12-item questionnaire designed to provide a rapid assessment of the symptoms of ocular irritation and vision-related functioning.
|
4weeks and 12 weeks
|
the category of adverse events and the frequency of the occurrence of adverse events
Time Frame: 4weeks and 12 weeks
|
The category of adverse events and the frequency of the occurrence of adverse events are listed to describe the safety.
|
4weeks and 12 weeks
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Dan Liang, MD, Zhongsh Ophthalmic Center
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Exophthalmos
- Orbital Diseases
- Goiter
- Eye Diseases
- Graves Ophthalmopathy
- Thyroid Diseases
- Hyperthyroidism
- Autoimmune Diseases
- Endocrine System Diseases
- Immune System Diseases
- Genetic Diseases, Inborn
- Graves Disease
- Eye Diseases, Hereditary
- Anti-Infective Agents
- Anti-Bacterial Agents
- Antiprotozoal Agents
- Antiparasitic Agents
- Antimalarials
- Doxycycline
Other Study ID Numbers
- 2013MEKY033
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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