Studies of Ocular Complications of AIDS (SOCA)--Ganciclovir-Cidofovir CMV Retinitis Trial (GCCRT)

This study has been completed.
Information provided by:
National Eye Institute (NEI) Identifier:
First received: September 23, 1999
Last updated: March 18, 2010
Last verified: September 2009

To compare the newest CMV retinitis drug, cidofovir, with a regimen of the ganciclovir intraocular device plus oral ganciclovir with respect to efficacy in preventing vision loss.

To compare a treatment regimen that incorporates highly active local therapy (ganciclovir device) with a treatment regimen that does not.

Condition Intervention Phase
Cytomegalovirus Retinitis
HIV Infections
Device: Ganciclovir Intraocular Device
Drug: Ganciclovir
Drug: Cidofovir
Phase 3

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

Resource links provided by NLM:

Further study details as provided by National Eye Institute (NEI):

Study Start Date: May 1997
Detailed Description:

Cytomegalovirus (CMV) is among the most frequently encountered opportunistic infections in patients with AIDS. In the era of prophylaxis for pneumocystic pneumonia, CMV disease is estimated to affect 45 percent of patients with AIDS sometime between the diagnosis of AIDS and death. Retinitis has been estimated to account for up to 85 percent of CMV disease in these patients, making CMV retinitis the most common ocular infection encountered. CMV retinitis is a relatively late-stage manifestation, associated with CD4+ T-cell counts < 100 cells/uL and often < 50 cells/uL.

All currently available treatments for CMV suppress viral replication but do not eliminate the virus from the body. Discontinuation of therapy is associated with a prompt relapse of the retinitis. Despite the use of chronic suppressive therapy, relapse of the retinitis generally occurs, at least with systemically administered anti-CMV drugs.

The first two treatments approved for CMV retinitis were intravenous ganciclovir and intravenous foscarnet. Both are given by daily intravenous infusions and therefore require central venous catheters. The development of newer treatments has focused not only on efficacious treatments, but also on treatments that do not require central venous catheters. Available treatments now include oral ganciclovir, the ganciclovir intraocular device, and intravenous cidofovir.

In vitro data suggest that combination therapies are synergistic in inhibiting viral replication; these therapies include a foscarnet-ganciclovir combination and a cidofovir-ganciclovir combination. In the SOCA--CMV Retinitis Retreatment Trial, the combination of intravenous ganciclovir and foscarnet was more effective than either drug alone for the treatment of relapsed retinitis. Therefore, the combination of intermittent intravenous cidofovir and daily oral ganciclovir may be an attractive therapy for relapsed disease because it may provide synergy for controlling both ocular and visceral disease while not necessitating either a central venous catheter or an intraocular surgical procedure.

The Ganciclovir-Cidofovir CMV Retinitis Trial (GCCRT) is a randomized, multicenter clinical trial. Patients will be assigned to receive one of two regimens: (1) ganciclovir intraocular device plus oral ganciclovir or (2) intravenous cidofovir. The intraocular device will be surgically implanted at baseline and again every 6 to 8 months in eyes with CMV retinitis. Oral ganciclovir is taken at a dose of 1 gram three times daily. Cidofovir will be administered intravenously at 5 mg/kg once weekly for 2 consecutive weeks and once every 2 weeks thereafter. If disease progression occurs in patients receiving cidofovir, patients will be given reinduction therapy, and oral ganciclovir at a dose of 1 gram three times per day will be added to the treatment. If patients assigned to cidofovir are unable to tolerate that regimen, an alternative systemic regimen will be recommended.

Study outcome variables include a decrease of three or more lines from baseline in best corrected visual acuity and rate of visual field loss. The study will also assess other variables including mortality, blood CMV and HIV load, quality of life, and medical costs.

Treatment assignment will not be masked to either patients or clinicians; however, reading of fundus photographs to determine both change in retinal involvement and progression will be masked.


Ages Eligible for Study:   13 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Males and females age 13 years and older with diagnoses of AIDS and active CMV retinitis will be eligible. Patients must have a best corrected visual acuity of greater than or equal to 20/100 in at least one eye affected by CMV retinitis with at least one lesion 750 u or greater that can be photographed.

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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 identifier: NCT00000143

United States, California
Department of Ophthalmology, University of California, Irvine
Irvine, California, United States, 92697-4375
Shiley Eye Center Center, 0946, University of California, San Diego
La Jolla, California, United States, 92093-0946
Jules Stein Eye Institute, University of California, Los Angeles
Los Angeles, California, United States, 90095-7003
LAC/USC Medical Center, 5P21 Rand Schrader Clinic
Los Angeles, California, United States, 90033
Beckman Vision Center, University of California, San Francisco
San Francisco, California, United States, 94143
United States, Florida
Bascom Palmer Eye Institute, University of Miami
Miami, Florida, United States, 33136
University of South Florida, MDC Box 21
Tampa, Florida, United States, 33612-4799
United States, Georgia
The Emory Clinic, Emory University
Atlanta, Georgia, United States, 30322
United States, Illinois
Department of Ophthalmology, Northwestern University
Chicago, Illinois, United States, 60611
United States, Indiana
Division of Infectious Diseases, Indiana University, Indianapolis
Indianapolis, Indiana, United States, 46202-2879
United States, Louisiana
LSU Eye Center, Louisiana State University Medical Center
New Orleans, Louisiana, United States, 70112
United States, Maryland
The Wilmer Ophthalmological Institute, The Johns Hopkins University School of Medicine
Baltimore, Maryland, United States, 21287-9217
United States, Massachusetts
Harvard/BCH AIDS Clinical Trials Unit, Massachusetts General Hospital
Boston, Massachusetts, United States, 02114
United States, New Jersey
UMDNJ-New Jersey Medical School
Newark, New Jersey, United States, 07103-2499
United States, New York
Department of Ophthalmology, Mount Sinai School of Medicine
New York, New York, United States, 10029-6574
Department of Ophthalmology, New York Hospital-Cornell Medical Center
New York, New York, United States, 10021
Department of Ophthalmology, New York University Medical Center
New York, New York, United States, 10016
United States, North Carolina
University of North Carolina at Chapel Hill
Chapel Hill, North Carolina, United States, 27599-7030
United States, Texas
Cullen Eye Institute, Baylor College of Medicine
Houston, Texas, United States, 77030
Sponsors and Collaborators
  More Information

Additional Information:
No publications provided Identifier: NCT00000143     History of Changes
Other Study ID Numbers: NEI-42
Study First Received: September 23, 1999
Last Updated: March 18, 2010
Health Authority: United States: Federal Government

Additional relevant MeSH terms:
Cytomegalovirus Retinitis
Cytomegalovirus Infections
DNA Virus Infections
Eye Diseases
Eye Infections
Eye Infections, Viral
Herpesviridae Infections
Retinal Diseases
Virus Diseases
Anti-Infective Agents
Antiviral Agents
Pharmacologic Actions
Therapeutic Uses processed this record on May 21, 2015