Study to Evaluate Sub-retinal Transplantation of Retinal Pigmented Epithelial Cells in Patients With Dry AMD

This study will be a Phase 2, double-masked, randomized, parallel group, sham surgery/placebo
control, multi-center trial. Subjects will be randomized in a 3:1 ratio to either the
treatment or control group respectively. Subjects randomized to the treatment group will
receive transplantation with 200,000 MA09-hRPE (human embryonic stem cell derived retinal
pigmented epithelial)cells in one eye. Subjects randomized to the control group will have a
sham surgery without transplantation of MA09-hRPE cells. The study eye must meet all
eligibility criteria. If both eyes meet all eligibility criteria, then the study eye will be
the eye with the worst Best Corrected Visual Acuity (BCVA) score at screening. If both eyes
have identical BCVA scores, then the study eye will be chosen by the Investigator and the
subject. There will be 3 cohorts, each with a different regimen of low-dose IMT [tacrolimus
and mycophenolate mofetil (MMF)]. Subjects will be randomized to treatment or control within
cohorts, defined by severity of BCVA in the study eye at Screening. Enrollment in Cohort 1
and 2 will be concurrent. Enrollment into Cohort 3 will begin once Cohort 2 is fully
enrolled.

Inclusion Criteria:

- Geographic atrophy (GA) secondary to AMD with no evidence of prior to active choroidal
neovascularization (CNV) in the study eye.

- BCVA in the study eye must be between 4 and 58 Early Treatment of Diabetic Retinopathy
Study (EDTRS) letters (20/800 to 20/80; 0.025-0.25)

- Subjects must be willing to take IMT and willing to discontinue any medication that
has a known strong interaction with tacrolimus or mycophenolate mofetil (MMF)

Exclusion Criteria:

- Macular atrophy due to causes other than AMD

- Other sight-threatening ocular disease

- Current or prior history of optic neuropathy, retinal dystrophy, retinitis pigmentosa,
chorioretinitis, vasoocclusive disease, retinal vascular disease or retinal
degenerative disease OTHER than AMD

- History of uveitis

- History of allergic reaction to sulfa drugs

- Solid organ or bone marrow transplant recipient

- History of malignancy within the previous 5 years (except for BCC (basal cell
carcinoma), SCC (squamous cell carcinoma) or in-situ cervical)

- History of myocardial infarction with past 12 months

- History of clinically significant cardiac dysrhythmia

- History of diabetes mellitus, bowel disease, tuberculosis

- Prior treatment for non-exudative AMD

- Intraocular, refractive or cataract surgery in the last 12 weeks

- Prior retinal surgery, vitrectomy, macular laser photocoagulation, external beam
radiation therapy, transpupillary thermotherapy, glaucoma filtration surgery or
corneal surgery (except cataract surgery)

- Receipt of gene transfer of cell transplant therapy in a prior clinical trial

- Participation in any other interventional clinical trial within the last 12 weeks