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Ranibizumab to Treat Type 2 Idiopathic Macular Telangiectasia (RAMA-Trial)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00504400
Recruitment Status : Completed
First Posted : July 20, 2007
Last Update Posted : September 22, 2009
Information provided by:
University Hospital, Bonn

Brief Summary:
The purpose of this study is to investigate if a new drug called ranibizumab is effective to treat a rare bilateral disease of the macula: type 2 idiopathic macular telangiectasia (type 2 IMT). 10 patients will receive monthly injections of the drug into one eye over a period of one year.

Condition or disease Intervention/treatment Phase
Type 2 Idiopathic Macular Telangiectasia Drug: Intravitreal injection ranibizumab Phase 2

Detailed Description:

Type 2 idiopathic macular telangiectasia (type 2 IMT) is a retinal disease of unknown etiology that commonly presents with a slow decrease in visual acuity, reading difficulties and metamorphopsia in the fifth to seventh decade. Diagnosis is based on fluorescein angiography which typically reveals parafoveal leakage in the late phase and may show telangiectatic capillaries in the early phase. In a subset of patients, a proliferative stage with secondary neovascularizations may develop late in the disease course. In the past, there has been no effective treatment for the disease stages without neovascularization.

Recent studies in a limited number of patients with nonproliferative disease have shown promising results after intravitreal injection of bevacizumab, an antagonist targeting vascular endothelial growth factor (VEGF). Bevacizumab resulted in a decrease of parafoveal leakage in fluorescein angiography and a decrease in retinal thickness. An increase in visual acuity was reported in a subset of patients.

The RAMA-Trial is initiated in order to investigate the effect of a ranibizumab. The safety and tolerability of this VEGF-antagonist has been extensively studied in large cohorts of patients suffering from age-related macular degeneration.

Patients with type 2 IMT will receive monthly injections over a period of one year. The above mentioned outcome measures will be assessed.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 10 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Ranibizumab in Idiopathic Macular Telangiectasia, Type 2. A Prospective Interventional Non-randomized Study Comparing the Efficacy and Safety of Intravitreal Ranibizumab in Type 2 Idiopathic Macular Telangiectasia.
Study Start Date : August 2007
Actual Primary Completion Date : June 2009
Actual Study Completion Date : September 2009

Resource links provided by the National Library of Medicine

Drug Information available for: Ranibizumab

Arm Intervention/treatment
Experimental: A Drug: Intravitreal injection ranibizumab
Monthly intravitreal injection of of 0.5mg ranibizumab in one eye over one year
Other Name: Lucentis

Primary Outcome Measures :
  1. Best corrected visual acuity [ Time Frame: one year ]

Secondary Outcome Measures :
  1. Reading ability [ Time Frame: one year ]
  2. Scotomas measured by means of microperimetry [ Time Frame: one year ]
  3. Changes in retinal thickness assessed by optical coherence tomography (OCT) imaging [ Time Frame: one year ]
  4. Changes in parafoveal leakage assessed by fluorescein angiography [ Time Frame: one year ]
  5. Quality of life [ Time Frame: one year ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • diagnosis of type 2 idiopathic macular telangiectasia
  • minimum of 18 years
  • patient must be able to follow protocol
  • written informed consent
  • best corrected visual acuity between 20/200 - 20/32 in the treated eye

Exclusion Criteria:

  • patients who do not fulfill the inclusion criteria
  • patients with other retinal vascular disease such as diabetic retinopathy or venous occlusive diseases
  • ocular surgery 3 months before study enrollment
  • history of uncontrolled glaucoma
  • active intraocular inflammation or inflammation of the ocular adnexa
  • subfoveal fibrosis in the study eye
  • inability to follow study protocol
  • major surgery one month before study enrollment
  • history of severe cardiovascular disease or history of stroke 6 months before study enrollment
  • allergies against substances or components of the study medication
  • low anticipated compliance
  • patients who participate(d) in clinical trials simultaneously or within the last 60 days
  • pregnancy, lactation, women that may become pregnant and don't use safe contraception
  • chronic alcohol- or drug abuse within the last year
  • lacking legal competence or language ability
  • neurologic diseases such as multiple sclerosis
  • need of concomitant medication that is not allowed in combination with ranibizumab
  • previous intravitreal therapy with anti-angiogenic substances in the study eye within the last 6 months

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00504400

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Department of Ophthalmology, University of Bonn
Bonn, Germany
Sponsors and Collaborators
University Hospital, Bonn
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Principal Investigator: Frank Holz, MD University of Bonn, Department of Ophthalmology
Principal Investigator: Hendrik PN Scholl, MD, MA University of Bonn
Additional Information:
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: University of Bonn Identifier: NCT00504400    
Other Study ID Numbers: CRFB002ADE04
EudraCT number 2006-006233-40
First Posted: July 20, 2007    Key Record Dates
Last Update Posted: September 22, 2009
Last Verified: September 2009
Keywords provided by University Hospital, Bonn:
macular telangiectasia
parafoveal telangiectasis
intravitreal injection
Additional relevant MeSH terms:
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Retinal Telangiectasis
Vascular Diseases
Cardiovascular Diseases
Retinal Diseases
Eye Diseases
Angiogenesis Inhibitors
Angiogenesis Modulating Agents
Growth Substances
Physiological Effects of Drugs
Growth Inhibitors
Antineoplastic Agents