Working…
Help guide our efforts to modernize ClinicalTrials.gov.
Send us your comments by March 14, 2020.
ClinicalTrials.gov
ClinicalTrials.gov Menu

Safety & Efficacy Study Evaluating the Combination of Bevasiranib & Lucentis Therapy in Wet AMD (COBALT)

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.
 
ClinicalTrials.gov Identifier: NCT00499590
Recruitment Status : Terminated
First Posted : July 11, 2007
Results First Posted : October 6, 2014
Last Update Posted : October 6, 2014
Sponsor:
Information provided by (Responsible Party):
OPKO Health, Inc.

Study Description
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information
Brief Summary:
The purpose of this study is to compare the safety and effectiveness of bevasiranib given either every 8 weeks or every 12 weeks after an initial pre-treatment with 3 injections of Lucentis® (ranibizumab injection) compared to Lucentis® given every 4 weeks to people with wet AMD. Patients will be assigned at random (like tossing a coin) to receive one of three treatments options for 104 weeks.

Condition or disease Intervention/treatment Phase
Macular Degeneration Drug: bevasiranib Drug: ranibizumab Phase 3

Study Design
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 338 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Phase 3, Randomized, Double-masked, Parallel-assignment Study of Intravitreal Bevasiranib Sodium, Administered Every 8 or 12 Weeks as Maintenance Therapy Following Three Injections of Lucentis® Compared With Lucentis® Monotherapy Every 4 Weeks in Patients With Exudative Age-Related Macular Degeneration (AMD).
Study Start Date : August 2007
Actual Primary Completion Date : March 2009
Actual Study Completion Date : May 2009

Resource links provided by the National Library of Medicine

Drug Information available for: Ranibizumab

Arms and Interventions
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Arm Intervention/treatment
Active Comparator: A
Lucentis® (0.5mg) every 4 weeks.
 Drug: ranibizumab
Lucentis® (0.5 mg)administered intravitreally every 4 weeks.
Other Name: Lucentis®
Experimental: B
Bevasiranib (2.5mg) every 8 weeks beginning at week 12, after pre-treatment with 3 injections of Lucentis® and initial priming doses of bevasiranib at weeks 2 & 6.
 Drug: bevasiranib
Bevasiranib (2.5mg) administered intravitreally every 8 or 12 weeks
Experimental: C
Bevasiranib (2.5mg) every 12 weeks beginning at week 12, after pre-treatment with 3 injections of Lucentis® and initial priming doses of bevasiranib at weeks 2 & 6.
 Drug: bevasiranib
Bevasiranib (2.5mg) administered intravitreally every 8 or 12 weeks


Outcome Measures
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Primary Outcome Measures :
  1. Visual Acuity [ Time Frame: week 60 ]
    avoidance of 3 or more lines of vision loss


Secondary Outcome Measures :
  1. Need for Rescue Therapy, Time to Rescue Therapy, and Number of Patients With a 3 or More Line Gain in Vision [ Time Frame: Week 60 ]

Eligibility Criteria
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Information from the National Library of Medicine

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, Learn About Clinical Studies.


Layout table for eligibility information
Ages Eligible for Study:   50 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. Patients must be age 50 years or older
  2. Patients must have predominantly classic, minimally classic or occult with no classic lesions secondary to Age Related Macular Degeneration.
  3. The study eye must have ETDRS best corrected visual acuity of 69 to 24 letters (20/40 to 20/320 Snellen equivalent).
  4. Patients must be willing and able to return for scheduled monthly follow-up visits for two-years.

Exclusion Criteria:

  1. Prior pharmacologic treatment for AMD in the study (patients can not have previously received Avastin®/Lucentis®, Macugen®, or any other anti-VEGF agents, steroid treatments, PDT, radiation treatment, or any experimental therapies for AMD in the study eye)
  2. Any intraocular surgery of the study eye within 12 weeks of screening
  3. Previous posterior vitrectomy of the study eye
  4. Advanced glaucoma or intraocular pressure above 22 mm Hg in the study eye despite treatment.
Contacts and Locations
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

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 ClinicalTrials.gov identifier (NCT number): NCT00499590


Locations
Show Show 60 study locations
Sponsors and Collaborators
OPKO Health, Inc.
Investigators
Layout table for investigator information
Study Director: Denis O'Shaughnessy, Ph.D. Senior VP of Clincial Development
More Information
Go to 
Top of Page Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Layout table for additonal information
Responsible Party: OPKO Health, Inc.
ClinicalTrials.gov Identifier: NCT00499590    
Other Study ID Numbers: ACU301
First Posted: July 11, 2007    Key Record Dates
Results First Posted: October 6, 2014
Last Update Posted: October 6, 2014
Last Verified: September 2014
Keywords provided by OPKO Health, Inc.:
AMD
Macular Degeneration
bevasiranib
COBALT study
 age related macular degeneration
wet AMD
wet age related macular degeneration
Additional relevant MeSH terms:
Layout table for MeSH terms
Macular Degeneration
Retinal Degeneration
Retinal Diseases
Eye Diseases
Ranibizumab
Angiogenesis Inhibitors
 Angiogenesis Modulating Agents
Growth Substances
Physiological Effects of Drugs
Growth Inhibitors
Antineoplastic Agents