Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Double-masked, Multi-center, Phase II Study Assessing the Safety and Efficacy of Two Concentrations of Ranibizumab (Intravitreal Injections) Compared With Non-treatment Control for the Treatment of Diabetic Macular Edema With Center Involvement
Brief Summary: This study evaluated the safety and efficacy of ranibizumab on retinal edema and visual acuity in patients with diabetic macular edema with center involvement.


Options:
A: Inclusion Criteria:

* Cases with clinically significant macular edema (CSME) with persistent retinal thickening after initial or supplemental macular photocoagulation

Exclusion Criteria:

* Monocularity,
* History of vitrectomy,
* Glaucoma or ocular hypertension,
* Significant media opacity,
* Existence of traction on the macula
B: Inclusion Criteria:

* Diabetic macular edema with center involvement in at least one eye
* Type 1 or type 2 diabetes mellitus diagnosed 2 years prior to screening
* Laser photocoagulation in the study eye can be withheld for at least 3 months after randomization

Exclusion Criteria:

* Patients with uncontrolled systemic or ocular diseases
* Have any history of any intraocular surgery in the study eye within the past 6 months preceding screening
* Conditions that require chronic concomitant therapy with systemic or topical ocular corticosteroids

Other protocol-defined inclusion/exclusion criteria applied to the study.
C: Inclusion Criteria:

* Willingness to provide written informed consent and, at U.S. sites, Health Insurance Portability and Accountability Act (HIPAA) authorization, and in other countries, as applicable according to national laws.
* Age ≥ 18 years.
* Diabetes mellitus (Type 1 or 2) .
* Retinal thickening secondary to diabetes mellitus (DME) involving the center of the fovea with central macular thickness ≥ 275 µm in the center subfield as assessed on optical coherence tomography (OCT).
* Best corrected visual acuity (BCVA) score in the study eye of 20/40 to 20/320 approximate Snellen equivalent using the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol at an initial testing distance of 4 meters.
* Decrease in vision determined to be primarily the result of DME and not to other causes.
* For sexually active women of childbearing potential, use of an appropriate form of contraception (or abstinence) for the duration of the study.
* Ability (in the opinion of the investigator) and willingness to return for all scheduled visits and assessments.

Exclusion Criteria:

* History of vitreoretinal surgery in the study eye.
* Panretinal photocoagulation (PRP) or macular laser photocoagulation in the study eye within 3 months of screening.
* Previous use of intraocular corticosteroids in the study eye (eg, triamcinolone acetonide \[TA\]) within 3 months of screening.
* Previous treatment with anti-angiogenic drugs in either eye (pegaptanib sodium, anecortave acetate, bevacizumab, ranibizumab, etc) within 3 months of the Day 0 (first day of treatment) visit.
* Proliferative diabetic retinopathy (PDR) in the study eye, with the exception of inactive, regressed PDR.
* Iris neovascularization, vitreous hemorrhage, traction retinal detachment, or preretinal fibrosis involving the macula in the study eye.

Concurrent Ocular Conditions

* Vitreomacular traction or epiretinal membrane in the study eye.
* Ocular inflammation (including trace or above) in the study eye.
* History of idiopathic or autoimmune uveitis in either eye.
* Structural damage to the center of the macula in the study eye that is likely to preclude improvement in VA following the resolution of macular edema, including atrophy of the retinal pigment epithelium (RPE), subretinal fibrosis, or organized hard-exudate plaque.
* Ocular disorders in the study eye that may confound interpretation of study results, including retinal vascular occlusion, retinal detachment, macular hole, or choroidal neovascularization (CNV) of any cause (eg, age-related macular degeneration (AMD), ocular histoplasmosis, or pathologic myopia).
* Concurrent disease in the study eye that would compromise visual acuity or require medical or surgical intervention during the study period.
* Cataract surgery in the study eye within 3 months, yttrium-aluminum-garnet (YAG) laser capsulotomy within the past 2 months, or any other intraocular surgery within the 90 days preceding Day 0.
* Aphakia or absence of the posterior capsule in the study eye.
* Uncontrolled glaucoma or previous filtration surgery in the study eye.
* Spherical equivalent of the refractive error in the study eye of more than -8 diopters myopia.
* Evidence at examination of infectious blepharitis, keratitis, scleritis, or conjunctivitis in either eye or current treatment for serious systemic infection.
* Uncontrolled blood pressure.
* History of cerebral vascular accident or myocardial infarction within 3 months prior to Day 0.
* Uncontrolled diabetes mellitus.
* Renal failure requiring dialysis or renal transplant.
* Participation in an investigational trial within 30 days prior to screening that involved treatment with any drug (excluding vitamins and minerals) or device.
* History of other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that contraindicates the use an investigational drug, might affect interpretation of the results of the study, or renders the subject at high risk from treatment complications.
* Pregnancy or lactation.
* History of allergy to fluorescein.
* History of allergy to ranibizumab injection or related molecule.
D: Inclusion Criteria:

* Age ≥ 18 years
* Individuals \<18 years old are not being included because DME is so rare in this age group that the diagnosis of DME may be questionable.
* Diagnosis of diabetes mellitus (type 1 or type 2)
* Any one of the following will be considered to be sufficient evidence that diabetes is present:
* Current regular use of insulin for the treatment of diabetes
* Current regular use of oral anti-hyperglycemia agents for the treatment of diabetes
* Documented diabetes by American Diabetes Association and/or World Health Organization criteria (see Procedures Manual for definitions)
* At least one eye meets the following study eye criteria:

  * Best corrected Electronic-Early Treatment Diabetic Retinopathy Study visual acuity letter score ≤ 78 (i.e., 20/32 or worse) and ≥ 24 (i.e., 20/320 or better) within eight days of randomization.
  * On clinical exam, definite retinal thickening due to diabetic macular edema involving the center of the macula.
  * Diabetic macular edema present on optical coherence tomography (OCT) (central subfield thickness on OCT \>250 µm on Zeiss Stratus or the equivalent on spectral domain OCTs based on gender specific cutoffs), within eight days of randomization.
  * Investigator must verify accuracy of OCT scan by ensuring it is centered and of adequate quality (for Zeiss Stratus, standard deviation of center point thickness should be ≤ 10% of the center point thickness and signal strength should be ≥ 6)
  * Media clarity, pupillary dilation, and individual cooperation sufficient for adequate fundus photographs
* Able and willing to provide informed consent.

Exclusion Criteria:

* Significant renal disease, defined as a history of chronic renal failure requiring dialysis or kidney transplant.
* A condition that, in the opinion of the investigator, would preclude participation in the study (e.g., unstable medical status including blood pressure, cardiovascular disease, and glycemic control).

  •Individuals in poor glycemic control who, within the last four months, initiated intensive insulin treatment (a pump or multiple daily injections) or plan to do so in the next four months should not be enrolled.
* Participation in an investigational trial within 30 days of randomization that involved treatment with any drug that has not received regulatory approval for the indication being studied at the time of study entry.

  • Note: study participants cannot receive another investigational drug while participating in the study.
* Known allergy to any component of the study drug.
* Blood pressure \> 180/110 (systolic above 180 OR diastolic above 110).

  • If blood pressure is brought below 180/110 by anti-hypertensive treatment, individual can become eligible.
* Myocardial infarction, other acute cardiac event requiring hospitalization, stroke, transient ischemic attack, or treatment for acute congestive heart failure within 4 months prior to randomization.
* Systemic anti-VEGF or pro-VEGF treatment within four months prior to randomization or anticipated use during the study.

  • These drugs cannot be used during the study.
* For women of child-bearing potential: pregnant or lactating or intending to become pregnant within the next 24 months.
* Women who are potential study participants should be questioned about the potential for pregnancy. Investigator judgment is used to determine when a pregnancy test is needed.
* Individual is expecting to move out of the area of the clinical center to an area not covered by another clinical center during the first 12 months of the study.

The following exclusions apply to the study eye only (i.e., they may be present for the nonstudy eye):

* Macular edema is considered to be due to a cause other than diabetic macular edema.
* An eye should not be considered eligible if: (1) the macular edema is considered to be related to ocular surgery such as cataract extraction or (2) clinical exam and/or OCT suggest that vitreoretinal interface abnormalities (e.g., a taut posterior hyaloid or epiretinal membrane) are the primary cause of the macular edema.
* An ocular condition is present such that, in the opinion of the investigator, visual acuity loss would not improve from resolution of macular edema (e.g., foveal atrophy, pigment abnormalities, dense subfoveal hard exudates, nonretinal condition).
* An ocular condition is present (other than diabetes) that, in the opinion of the investigator, might affect macular edema or alter visual acuity during the course of the study (e.g., vein occlusion, uveitis or other ocular inflammatory disease, neovascular glaucoma, etc.).
* Substantial cataract that, in the opinion of the investigator, is likely to be decreasing visual acuity by three lines or more (i.e., cataract would be reducing acuity to 20/40 or worse if eye was otherwise normal).
* History of an anti-VEGF treatment for DME in the past 12 months or history of any other treatment for DME at any time in the past four months (such as focal/grid macular photocoagulation, intravitreal or peribulbar corticosteroids).
* Enrollment will be limited to a maximum of 25% of the planned sample size with any history of anti-VEGF treatment for DME. Once this number of eyes has been enrolled, any history of anti-VEGF treatment for DME will be an exclusion criterion.
* History of pan-retinal photocoagulation within four months prior to randomization or anticipated need for pan-retinal photocoagulation in the six months following randomization.
* History of anti-VEGF treatment for a disease other than DME in the past 12 months.
* History of major ocular surgery (including vitrectomy, cataract extraction, scleral buckle, any intraocular surgery, etc.) within prior four months or anticipated within the next six months following randomization.
* History of YAG capsulotomy performed within two months prior to randomization.
* Aphakia.
* Exam evidence of external ocular infection, including conjunctivitis, chalazion, or significant blepharitis.

Answer: B