This study is to test whether or not 32 milligrams (mg) of ruboxistaurin a day over three years will reduce vision loss associated with diabetic retinopathy.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
685
32-mg tablet, orally, daily, up to 42 months
1 tablet, orally, daily, up to 42 months
For additional information regarding investigative sites for this trial, contact 1-877-CTLILLY (1-877-285-4559, 1-317-615-4559) Mon - Fri from 9 AM to 5 PM Eastern time (UTC/GMT -5 hours, EST) or speak with your personal physician.
Indianapolis, Indiana, United States
Percentage of Participants Who Had Sustained Moderate Visual Loss (SMVL) as Defined as a Visual Acuity Loss of ≥15 Letters Measured Twice During a 6-month Period
SMVL is defined as a ≥15-letter decrease from baseline in best-corrected Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity (VA) that the participant sustained during the last 6 months of study participation (Months 30-36). Participants who discontinued the study early may have had SMVL if there was a 6-month period of ≥15 letters lost in VA ending with the last visit at which VA was assessed. ETDRS visual acuity uses an eye chart with 5 letters per line. The scores range from 0 (no letters read correctly) to 100 (all letters read correctly). Percentage of participants = (number of participants who had SMVL) / (number of participants who were randomized) \* 100.
Time frame: Baseline through 36 months
Percentage of Participants Who Developed Center Involved or Imminently Threatened Diabetic Macular Edema (DME)
DME is the accumulation of extracellular fluid in the retinal tissue of the macular area, which can reduce the ability for fine visual discrimination. Percentage of participants = (number of participants who developed center involved or imminently threatened DME) / (number of participants who had no center involved or imminently threatened DME at baseline) \* 100.
Time frame: Baseline through 36 months
Percentage of Participants Who Experienced the Development of Proliferative Diabetic Retinopathy (PDR)
Percentage of participants = (number of participants who experienced the development of PDR) / (number of participants who were randomized) \* 100.
Time frame: Baseline through 36 months
Change From Baseline up to 36 Months in the National Eye Institute Visual Function Questionnaire-25 (NEI-VFQ-25)
NEI-VFQ-25 consisted of 25 questions and was used to measure the influence of visual disability and symptoms on general health of participants. The possible total score range for the NEI-VFQ-25 was from 0 (worst possible outcome) to 100 (best possible outcome).
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Time frame: Baseline, up to 36 months
Change From Baseline up to 36 Months in Mental and Physical Components of the Medical Outcomes Study 36-Item Short Form (SF-36) Health Status Questionnaire
SF-36 is a health-related survey that assesses participant's quality of life and consists of 36 questions. There are 2 component scores, mental component score (MCS) and physical component score (PCS). MCS score consisted of social functioning, vitality, mental health, and role-emotional scales. PCS score consisted of physical functioning, bodily pain, role-physical, and general health scales. Both MCS and PCS have scores ranging from 0 to 100 with higher scores indicating better mental or physical health.
Time frame: Baseline, up to 36 months