Phase II Randomized Controlled Study of Sequential Orbital Radiotherapy for Graves' Ophthalmopathy

The recruitment status of this study is unknown because the information has not been verified recently.
Verified January 1999 by Office of Rare Diseases (ORD).
Recruitment status was  Active, not recruiting
Sponsor:
Collaborator:
Mayo Clinic
Information provided by:
Office of Rare Diseases (ORD)
ClinicalTrials.gov Identifier:
NCT00004660
First received: February 24, 2000
Last updated: June 23, 2005
Last verified: January 1999
  Purpose

OBJECTIVES: I. Evaluate the effects of 20 Gy of external-beam radiotherapy to 1 orbit vs. the untreated orbit at 3 and 6 months after therapy in patients with Graves' ophthalmopathy.

II. Evaluate whether 20 Gy of external-beam radiotherapy delivered to the second orbit 6 months later in the course of the disease produces effects of equal magnitude to those observed when the first orbit was treated.

III. Relate the magnitude of treatment effects to the time since onset of eye symptoms.

IV. Evaluate whether characteristics of radiation retinopathy are present 3 years after orbital radiotherapy.


Condition Intervention Phase
Graves' Disease
Procedure: Radiotherapy
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Primary Purpose: Treatment

Resource links provided by NLM:


Further study details as provided by Office of Rare Diseases (ORD):

Estimated Enrollment: 42
Study Start Date: June 1993
Detailed Description:

PROTOCOL OUTLINE: The posterior region of 1 orbit is irradiated over 2 weeks with supervoltage equipment. The other orbit is treated 6 months later. The sequence of therapy is randomly assigned.

The untreated eye receives a simultaneous sham treatment during each radiotherapy session.

Patients are followed at 3, 6, 9, 12, and 36 months.

  Eligibility

Ages Eligible for Study:   30 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

PROTOCOL ENTRY CRITERIA:

--Disease Characteristics-- Firm diagnosis of Graves' disease with normal thyroid function, i.e.: Thyroid-stimulating immunoglobulin positive Thyroxine 5-12.5 micrograms/dL Tri-iodothyronine 80-180 nanograms/dL Thyroid-stimulating hormone 0.2-8 mIU/L Euthyroid due to therapy acceptable Ophthalmopathy meeting at least 3 of the following criteria: Chemosis or lid edema Lid lag, lid retraction, or restrictive lagophthalmos Proptosis at least 20 mm by Krahn exophthalmometry in at least 1 eye Less than 4 mm discrepancy between eyes Patient perception of "stare" or "bulge" Extraocular muscle motion restriction in 1 or both eyes on clinical exam or by patient report of diplopia at extremes of gaze Extraocular muscle enlargement on computerized tomography (previous study results acceptable) Mild to moderate ophthalmopathy, i.e.: Orbital pain Lacrimation Photophobia Visual blurring or diplopia No optic neuropathy, i.e.: Afferent pupillary defect Impaired color vision on D-15 testing (unless congenital color perception deficiency) Visual field defect Impaired visual acuity No corneal ulcers --Prior/Concurrent Therapy-- No prior external-beam radiotherapy to the head and neck At least 2 weeks since corticosteroids --Patient Characteristics-- No prior head and neck tumors No diabetes No pregnant women

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00004660

Sponsors and Collaborators
Mayo Clinic
Investigators
Study Chair: Colum A. Gorman Mayo Clinic
  More Information

No publications provided

ClinicalTrials.gov Identifier: NCT00004660     History of Changes
Other Study ID Numbers: 199/11860, MAYOC-1889200
Study First Received: February 24, 2000
Last Updated: June 23, 2005
Health Authority: United States: Federal Government

Keywords provided by Office of Rare Diseases (ORD):
Graves' disease
thyroid disease
endocrine disorders
rare disease

Additional relevant MeSH terms:
Graves Disease
Graves Ophthalmopathy
Exophthalmos
Orbital Diseases
Eye Diseases
Goiter
Thyroid Diseases
Endocrine System Diseases
Hyperthyroidism
Autoimmune Diseases
Immune System Diseases
Eye Diseases, Hereditary

ClinicalTrials.gov processed this record on July 28, 2014