Treatment for Completers of the Study B7A-MC-MBCM

Study Overview
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Brief Summary
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To provide ruboxistaurin treatment to patients who completed the B7A-MC-MBCM study (NCT00604383), and who are felt by the investigator to have the potential to benefit from the ruboxistaurin treatment. Patients must be off study drug for 6 to 18 months from completion of B7A-MC-MBCM before beginning B7A-MC-MBDV. Additional data will be gathered to determine the long-term safety and effect of ruboxistaurin on vision.

Official Title
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Open-Label Treatment for Patients Completing Study B7A-MC-MBCM

Conditions
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Diabetic Retinopathy

Intervention / Treatment
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* Drug: Ruboxistaurin


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients that completed Month 36 (Visit 15) of the study B7A-MC-MBCM, and the investigator believes he/she would benefit from ruboxistaurin treatment. Exclusion Criteria: Patients that discontinued from the study B7A-MC-MBCM and/or the investigator does not believe he/she would benefit from ruboxistaurin treatment.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Ruboxistaurin<br> | Drug: Ruboxistaurin<br>* 32-milligram (mg) tablet, orally, once daily (QD) for up to 2 years.<br>* Other names: Arxxant;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Sustained Moderate Visual Loss (SMVL) | The number of participants who experienced SMVL in at least 1 diabetic retinopathy (DR) study eye. SMVL was a ≥15-letter decrease from baseline in best-corrected Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity (VA) that was sustained for the last 6 months of the study. Best-corrected ETDRS VA was measured at 4 meters (m) using an eye chart with 5 letters per row of decreasing letter size in each successive row. Participants read the chart from the top down until reaching a row where ≥3 letters in the row could not be read correctly. If <20 letters were read correctly at 4 m, the chart was re-read at 1 m. The best-corrected ETDRS VA score was the total number of letters read correctly per eye at 4 m, plus a correction factor of 30 if ≥20 letters were read correctly at 4 m, plus the total number of letters read correctly at 1 m, if assessed. Best-corrected ETDRS VA scores ranged from 0 (no letters read correctly) to 100 (all letters read correctly). | Baseline, 18 months up to 24 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Vision Loss | The number of participants whose best-corrected Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity (VA) in at least 1 diabetic retinopathy (DR) study eye decreased by 15-letters or less from the conclusion of Study MBCM to the start of Study MBDV, 6 to 18 months later. Best-corrected ETDRS VA was measured at 4 meters (m) using an eye chart with 5 letters per row of decreasing letter size in each successive row. Participants read the chart from the top down until reaching a row where ≥3 letters in the row could not be read correctly. If <20 letters were read correctly at 4 m, the chart was re-read at 1 m. The best-corrected ETDRS VA score was the total number of letters read correctly per eye at 4 m, plus a correction factor of 30 if ≥20 letters were read correctly at 4 m, plus the total number of letters read correctly at 1 m, if assessed. Best-corrected ETDRS VA scores ranged from 0 (no letters read correctly) to 100 (all letters read correctly). | End of Study MBCM to the beginning of Study MBDV, approximately 6 to 18 months | 
| Sustained Moderate Vision Loss (SMVL), Long Term | The number of participants who experienced SMVL, long term, in at least 1 diabetic retinopathy (DR) study eye. Long term SMVL was a ≥15-letter decrease from Study MBCM baseline in best-corrected Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity (VA) that was sustained for the last 6 months of Study MBDV. VA was measured at 4 meters (m) using an eye chart with 5 letters per row of decreasing letter size in each successive row. Participants read the chart from the top down until reaching a row where ≥3 letters in the row could not be read correctly. If <20 letters were read correctly at 4 m, the chart was re-read at 1 m. The best-corrected ETDRS VA score was the total number of letters read correctly per eye at 4 m, plus a correction factor of 30 if ≥20 letters were read correctly at 4 m, plus the total number of letters read correctly at 1 m, if assessed. Best-corrected ETDRS VA scores ranged from 0 (no letters read correctly) to 100 (all letters read correctly). | Baseline in Study MBCM, 18 months up to 24 months in Study MBDV (for a total of 75 up to 87 months of SMVL, long term) | 
| Number of Participants With a Modified Sustained Moderate Vision Loss (mSMVL) Event by Time Interval | An mSMVL event was defined as a ≥15-letter decrease from Study MBDV baseline in best-corrected Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity (VA) during any 6-month period, not just the last 6 months of the study. An mSMVL event was the first occurrence of an mSMVL in a participant, and the time at which the mSMVL began was used as the time of the event for the analysis. VA was measured at 4 meters (m) using an eye chart with 5 letters per row. Participants read the chart from the top down until reaching a row where ≥3 letters in the row could not be read correctly. If <20 letters were read correctly at 4 m, the chart was re-read at 1 m. The best-corrected ETDRS VA score was the total number of letters read correctly per eye at 4 m, plus a correction factor of 30 if ≥20 letters were read correctly at 4 m, plus the total number of letters read correctly at 1 m, if assessed. | Baseline up to 6 months, 6 months up to 12 months, 12 months up to 18 months, 18 months up to 24 months, and 24 months up to 30 months | 
| Visual Acuity | Best-corrected Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity (VA) was measured at 4 meters (m) using an eye chart with 5 letters per row of decreasing letter size in each successive row. Participants read the chart from the top down until reaching a row where ≥3 letters in the row could not be read correctly. If <20 letters were read correctly at 4 m, the chart was re-read at 1 m. The best-corrected ETDRS VA score was the total number of letters read correctly per eye at 4 m, plus a correction factor of 30 if ≥20 letters were read correctly at 4 m, plus the total number of letters read correctly at 1 m, if assessed. Best-corrected ETDRS VA scores ranged from 0 (no letters read correctly) to 100 (all letters read correctly). A higher score represented better VA. | Month 24 | 
| Number of Participants Receiving Treatment With Focal/Grid Photocoagulation |  | Baseline up to Month 24 | 
| Number of Participants Receiving Treatment With Panretinal Photocoagulation |  | Baseline up to Month 24 |