Third patient dosed in Phase 1/2 SMD trial using RPE cells derived from hESCs

Advanced Cell Technology, Inc. ("ACT"; OTCBB: ACTC), a leader in the field of regenerative medicine, announced today the dosing of third patient in its Phase 1/2 trial for Stargardt's macular dystrophy (SMD) using retinal pigment epithelial (RPE) cells derived from human embryonic stem cells (hESCs). The patient was treated on Monday (Feb. 6) by Steven Schwartz, M.D., Ahmanson Professor of Ophthalmology at the David Geffen School of Medicine at the University of California, Los Angeles (UCLA) and retina division chief at UCLA's Jules Stein Eye Institute. The outpatient transplantation surgery was performed successfully and the patient is recovering uneventfully.

“With the treatment of this third Stargardt's patient at Jules Stein Eye Institute, we have now completed the treatment of the first cohort of patients under our clinical protocol for phase I/II of our U.S. SMD trial”

"With the treatment of this third Stargardt's patient at Jules Stein Eye Institute, we have now completed the treatment of the first cohort of patients under our clinical protocol for phase I/II of our U.S. SMD trial," said Gary Rabin, chairman and chief executive officer of ACT. "We will continue to regularly monitor the three SMD patients in this trial, and by early spring anticipate review of their progress and safety-related data by the Data and Safety Monitoring Board (DSMB). With approval of the DSMB, we would then advance to the next cohort of patients and administer a higher dosage of RPE cells. In the context of all three trials we have running, this patient is the fifth person worldwide to be treated with our hESC-derived RPE cells. To date, there have been no complications or side effects due to the RPE cells, and we remain cautiously optimistic that our ongoing clinical programs will demonstrate the safety and tolerability of ACT's stem cell-derived RPE cells."

Each of the three clinical trials being undertaken by the company in the U.S. and Europe will enroll 12 patients, with cohorts of three patients each in an ascending dosage format. These trials are prospective, open-label studies, designed to determine the safety and tolerability of hESC-derived RPE cells following sub-retinal transplantation into patients with SMD or dry age-related macular degeneration (dry AMD) at 12 months, the study's primary endpoint. Preliminary results relating to both early safety and biological function for the first two patients in the United States, one SMD patient and one dry AMD patient, were recently reported in The Lancet. On January 20, 2012, the first SMD patient to be enrolled in the Company's U.K. clinical trial was treated at Moorfields Eye Hospital in London.

Further information about patient eligibility for the SMD study and the concurrent study on dry AMD is also available on www.clinicaltrials.gov; ClinicalTrials.gov Identifiers: NCT01345006 and NCT01344993.