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Ranibizumab and Bevacizumab for Diabetic Macular Edema

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01610557
First Posted: June 4, 2012
Last Update Posted: August 19, 2016
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.
Collaborator:
The EMMES Corporation
Information provided by (Responsible Party):
National Institutes of Health Clinical Center (CC) ( National Eye Institute (NEI) )
Results First Submitted: February 11, 2016  
Study Type: Interventional
Study Design: Allocation: Randomized;   Intervention Model: Crossover Assignment;   Masking: Triple (Participant, Care Provider, Investigator);   Primary Purpose: Treatment
Condition: Diabetic Macular Edema
Interventions: Drug: Ranibizumab
Drug: Bevacizumab

  Participant Flow
  Hide Participant Flow

Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
No text entered.

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
56 participants enrolled: 50 participants had one eye randomly assigned (unilateral participants) and 6 participants had two eyes enrolled (bilateral participants) for a total of 62 eyes analyzed at baseline. Bilateral participants had the right eye randomly assigned; the left eye assigned to the group with the schedule inverse to the right eye.

Reporting Groups
  Description
Group 1 - Ranibizumab-Ranibizumab-Bevacizumab Injection Series

Group 1 eyes were assigned to Ranibizumab-Ranibizumab-Bevacizumab (RRB) treatment sequence and received intravitreal injections of ranibizumab at baseline, Weeks 4, and 8 (period 1), and Weeks 12, 16 and 20 (period 2), then crossed over to receive intravitreal injections of bevacizumab at Weeks 24, 28 and 32 (period 3).

Participants for whom one eye was enrolled in the study had this eye randomly assigned to one of four groups. Participants for whom both eyes were enrolled had the right eye randomly assigned; the left eye was assigned to the group with the schedule inverse to that for the right eye.

Group 2 - Ranibizumab-Bevacizumab-Bevacizumab Injection Series

Group 2 eyes were assigned to Ranibizumab-Bevacizumab-Bevacizumab (RBB) treatment sequence and received intravitreal injections of ranibizumab at baseline and Weeks 4 and 8 (period 1), then crossed over to receive intravitreal injections of bevacizumab at Weeks 12, 16, 20, 24, 28 and 32 (periods 2 and 3).

Participants for whom one eye was enrolled in the study had this eye randomly assigned to one of four groups. Participants for whom both eyes were enrolled had the right eye randomly assigned; the left eye was assigned to the group with the schedule inverse to that for the right eye.

Group 3 - Bevacizumab-Bevacizumab-Ranibizumab Injection Series

Group 3 eyes were assigned to Bevacizumab-Bevacizumab-Ranibizumab (BBR) treatment sequence and received intravitreal injections of bevacizumab at baseline and Weeks 4, 8, 12, 16 and 20 (periods 1 and 2), then crossed over to receive intravitreal injections of ranibizumab at Weeks 24, 28 and 32 (period 3).

Participants for whom one eye was enrolled in the study had this eye randomly assigned to one of four groups. Participants for whom both eyes were enrolled had the right eye randomly assigned; the left eye was assigned to the group with the schedule inverse to that for the right eye.

Group 4 - Bevacizumab-Ranibizumab-Ranibizumab Injection Series

Group 4 eyes were assigned to Bevacizumab-Ranibizumab-Ranibizumab (BRR) treatment sequence and received intravitreal injections of bevacizumab at baseline and Weeks 4 and 8 (period 1), then crossed over to receive intravitreal injections of ranibizumab at Weeks 12, 16, 20, 24, 28 and 32 (periods 2 and 3).

Participants for whom one eye was enrolled in the study had this eye randomly assigned to one of four groups. Participants for whom both eyes were enrolled had the right eye randomly assigned; the left eye was assigned to the group with the schedule inverse to that for the right eye.

Ranibizumab/Bevacizumab As Needed

Post-36-Week Extension Phase: Eyes assigned to Group 1 or Group 2 in the crossover phase were injected with ranibizumab on an as-needed basis. Eyes assigned to Group 3 or Group 4 in the crossover phase were injected with bevacizumab on an as-needed basis.

53 participants attended at least one follow-up visit in the post-36-week extension phase: 49 participants who had one eye enrolled and 4 participants who had two eyes enrolled.


Participant Flow for 2 periods

Period 1:   36-Week Randomized Crossover Phase
    Group 1 - Ranibizumab-Ranibizumab-Bevacizumab Injection Series   Group 2 - Ranibizumab-Bevacizumab-Bevacizumab Injection Series   Group 3 - Bevacizumab-Bevacizumab-Ranibizumab Injection Series   Group 4 - Bevacizumab-Ranibizumab-Ranibizumab Injection Series   Ranibizumab/Bevacizumab As Needed
STARTED   16 [1]   13 [2]   14 [3]   13 [4]   0 [5] 
COMPLETED   16   12 [6]   14   13   0 [5] 
NOT COMPLETED   0   1   0   0   0 
Withdrawal by Subject                0                1                0                0                0 
[1] Participants randomly assigned to Grp 1: 14 unilateral and 2 bilateral (left eye assigned to Grp 3)
[2] Participants randomly assigned to Grp 2: 12 unilateral and 1 bilateral (left eye assigned to Grp 4)
[3] Participants randomly assigned to Grp 3: 13 unilateral and 1 bilateral (left eye assigned to Grp 1)
[4] Participants randomly assigned to Grp 4: 11 unilateral and 2 bilateral (left eye assigned to Grp 2)
[5] Not applicable for 36-week double-masked randomized crossover phase
[6] Unilateral participant unable to return for visits after Wk 4 due to recovery from an adverse event

Period 2:   Post-36-Week Extension Phase
    Group 1 - Ranibizumab-Ranibizumab-Bevacizumab Injection Series   Group 2 - Ranibizumab-Bevacizumab-Bevacizumab Injection Series   Group 3 - Bevacizumab-Bevacizumab-Ranibizumab Injection Series   Group 4 - Bevacizumab-Ranibizumab-Ranibizumab Injection Series   Ranibizumab/Bevacizumab As Needed
STARTED   0 [1]   0 [1]   0 [1]   0 [1]   55 
COMPLETED   0 [1]   0 [1]   0 [1]   0 [1]   52 [2] 
NOT COMPLETED   0   0   0   0   3 
Withdrawal by Subject                0                0                0                0                3 
[1] Not applicable for the post-36-week extension phase
[2] 2 bilateral participants withdrew before their first post-36-week extension visit



  Baseline Characteristics


  Outcome Measures
  Show All Outcome Measures

1.  Primary:   Mean Change in Early Treatment Diabetic Retinopathy Study (ETDRS) Best-corrected Visual Acuity (BCVA) From Baseline to 36 Weeks (Crossover Phase of the Study)   [ Time Frame: Baseline and 36 Weeks ]

2.  Secondary:   Change in Central Retinal Thickness Assessed by Optical Coherence Tomography (OCT) Central Subfield Mean Thickness (CSMT) From Baseline to 36 Weeks (Crossover Phase of the Study)   [ Time Frame: Baseline and 36 Weeks ]


  Serious Adverse Events


  Other Adverse Events


  Limitations and Caveats
  Hide Limitations and Caveats

Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
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  More Information
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Certain Agreements:  
Principal Investigators are NOT employed by the organization sponsoring the study.
There IS an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.
The agreement is:
unchecked The only disclosure restriction on the PI is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is less than or equal to 60 days. The sponsor cannot require changes to the communication and cannot extend the embargo.
unchecked The only disclosure restriction on the PI is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is more than 60 days but less than or equal to 180 days. The sponsor cannot require changes to the communication and cannot extend the embargo.


Results Point of Contact:  
Name/Title: Henry E Wiley, MD, Principal Investigator
Organization: National Eye Institute (NEI) at National Institutes of Health (NIH)
phone: (301) 451-4260
e-mail: wileyhe@mail.nih.gov


Publications of Results:
Other Publications:

Responsible Party: National Institutes of Health Clinical Center (CC) ( National Eye Institute (NEI) )
ClinicalTrials.gov Identifier: NCT01610557     History of Changes
Other Study ID Numbers: 120134
12-EI-0134
First Submitted: May 31, 2012
First Posted: June 4, 2012
Results First Submitted: February 11, 2016
Results First Posted: April 27, 2016
Last Update Posted: August 19, 2016