Efalizumab to Treat Uveitis

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StatusLengkap

Sponsor

National Eye Institute (NEI)

UJI KLINIS: NCT00280826

BioSeek: nct00280826

Kata kunci

Abstrak

This study examined the safety and potential efficacy of the monoclonal antibody efalizumab (Raptiva) for treating sight-threatening uveitis (eye inflammation). Efalizumab controls the activity of white blood cells called lymphocytes that cause inflammation. The drug is currently approved in the United States to treat patients with moderate to severe psoriasis.

Participants 18 and older with sight-threatening intermediate or posterior uveitis of at least 3 months duration, causing persistent macular edema in one or both eyes, were eligible for this study. The uveitis required treatment with at least 20 milligrams per day of prednisone, or the equivalent, or a combination of two or more anti-inflammatory treatments such as prednisone, methotrexate, cyclophosphamide, cyclosporine, etc.

Participants underwent the following tests and procedures:

- Medical history and physical examination.

- Weekly efalizumab treatment.

- Weekly eye examination, including measurement of vision and pressure in the eyes, dilation of the eyes and examination of the front and back parts of the eye.

- Weekly blood tests to measure the number and types of cells in the blood and to check for signs of inflammation and treatment side effects. At some visits, blood samples were collected to measure how much efalizumab remains in the blood and whether the body has developed an immune response to the medicine.

- Blood draw at enrollment and at 2 and 4 months for research tests to examine how participants' immune response was operating.

- Fluorescein angiography at enrollment and 1 and 3 months after enrollment, unless additional tests are needed, for medical management. This test checked for abnormalities of eye blood vessels. A yellow dye was injected into an arm vein and travels to the blood vessels in the eyes. Pictures of the retina (the back portion of the eye) were taken with a special camera that flashes a blue light into the eye. The pictures show whether any dye has leaked from the vessels into the retina, indicating possible abnormalities.

- Monthly pregnancy test for women who could become pregnant.

Participants returned for treatment and clinic visits weekly for 16 weeks. After 16 weeks, participants whose macular edema had decreased and whose vision may have improved were offered to continue the injections.

Deskripsi

Background: Uveitis refers to intraocular inflammatory diseases that are an important cause of visual loss. Standard systemic immunosuppressive medications for uveitis can cause significant adverse effects. Consequently, an effective treatment with a safer side effect profile is highly desirable.

Aims: This protocol evaluated the safety and potential efficacy of subcutaneous (SC) efalizumab (anti-CD11a) treatments for uveitis while reducing or eliminating standard medications commensurate with the standard of care. If the therapeutic benefit was sustained using the SC formulation, then maintenance therapy was continued as clinically indicated.

Methods: This was an open-label, non-randomized, clinical pilot study.

tanggal

Terakhir Diverifikasi:	12/31/2010
Pertama Dikirim:	01/20/2006
Perkiraan Pendaftaran Telah Dikirim:	01/19/2006
Pertama Diposting:	01/22/2006
Pembaruan Terakhir Dikirim:	01/27/2011
Pembaruan Terakhir Diposting:	02/01/2011
Tanggal hasil pengiriman pertama:	07/14/2010
Tanggal hasil QC pertama kali dikirim:	01/04/2011
Tanggal hasil posting pertama:	01/26/2011
Tanggal Mulai Studi Sebenarnya:	12/31/2005
Perkiraan Tanggal Penyelesaian Utama:	01/31/2009
Perkiraan Tanggal Penyelesaian Studi:	01/31/2009

Kondisi atau penyakit

Uveitis

Macular Edema

Intervensi / pengobatan

Drug: Efalizumab

Tahap

Tahap 1

Kelompok Lengan

Lengan	Intervensi / pengobatan
Experimental: Efalizumab	Drug: Efalizumab Participants who qualified for the study received weekly subcutaneous treatments of efalizumab, with the first dose being a test dose of 0.7 mg/kg and subsequent doses of 1 mg/kg (not to exceed 200 mg per dose), for a total treatment duration of 16 weeks.

Kriteria kelayakan

Usia yang Layak untuk Belajar	18 Years Untuk 18 Years
Jenis Kelamin yang Layak untuk Belajar	All
Menerima Relawan Sehat	Iya
Kriteria	Inclusion Criteria: - Participant is 18 years of age or older; - Participant has a diagnosis of sight-threatening, intermediate or posterior uveitis of at least three months duration prior to original enrollment that is causing persistent cystoid macular edema in one or both eyes. Their disease requires treatment to control their intraocular inflammatory disease with at least 20 mg/day of prednisone (or equivalent) or any combination of two or more anti-inflammatory treatments for uveitis, including for example prednisone, cyclophosphamide, cyclosporine, azathioprine, mycophenolate mofetil, methotrexate, etc. - Participant exhibits intolerance to the indicated systemic medications required for their uveitis or, though their uveitis may be under control, wish to be taken off their present medications due to potential or actual unacceptable side effects. - Participant has visual acuity in at least one eye of 20/200 or better. - Participant has normal renal or liver function or no worse than mild abnormalities as defined by the Common Toxicity Criteria. - Participant is not currently pregnant or lactating. - Both men and women with reproductive potential and who are sexually active agree to use acceptable birth control methods throughout the course of the study and for six weeks following the last administration of the study medication. - Participant must have the ability to understand and sign an informed consent form. Exclusion Criteria: - Participants who had received previous treatment with an intercellular adhesion molecule (ICAM) or lymphocyte function-associated antigen-1 (LFA-1) directed monoclonal antibody or any other investigational agent that would interfere with the ability to evaluate the safety, efficacy or pharmacokinetics of efalizumab. - Participant has a significant active infection. - Participant has a history of cancer (other than a non-melanoma skin cancer) diagnosed within the past 5 years.

Hasil

Ukuran Hasil Utama

1. Number of Participants With Systemic Toxicities, Adverse Events, or Infections [16 weeks]

Safety outcomes were recorded by observing and tabulating the nature, severity and frequency of systemic toxicities, adverse events and infections throughout the study. Safety assessments were made by the investigators continuously during the study, with a review of the previous visit interval performed at each scheduled visit. Each participant was also encouraged to report any apparent adverse events between scheduled visits and could return for additional evaluations or treatment between scheduled visits if needed.

Ukuran Hasil Sekunder

1. Cystoid Macular Edema in the Worse Eye as Assessed by Optical Coherence Tomography (OCT). [Baseline and 16 weeks]

Worse eye indicates the eye with the worst visual acuity (VA).

2. Cystoid Macular Edema in the Better Eye as Assessed by Optical Coherence Tomography (OCT). [Baseline and 16 weeks]

Better eye indicates the eye with better VA.

3. Change in Visual Acuity in the Worse Eye From Baseline to 16 Weeks [Baseline and 16 weeks]

Visual acuity was measured using the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol. This acuity is measured as letters read on an ETDRS eye chart and the letters read equate to Snellen measurements. For example, if a participant reads between 84 and 88 letters the Snellen measurement is 20/20.

4. Change in Visual Acuity in the Better Eye From Baseline to 16 Weeks [Baseline and 16 weeks]

Efalizumab to Treat Uveitis

Kata kunci

radang

sembap

uveitis

psoriasis

antiinflamasi

antijamur