Stem cell study for spinal injuries OK'd
Calif. firm aims to aid paraplegics
NEW YORK - A US biotech company says it plans to start the world's first study of a treatment based on human embryonic stem cells, a long-awaited project aimed at spinal cord injury.
The company gained federal permission this week to inject eight to 10 patients with cells derived from embryonic cells, said Dr. Thomas Okarma, president and CEO of
The patients will be paraplegics, who can use their arms but can't walk. They will receive a single injection within two weeks of their injury.
The study, scheduled for this summer, is aimed at testing the safety of the procedure, but doctors will also look for signs of improvement, like return of sensation or movement in the legs, Okarma said.
Whatever its outcome, the study will mark a new chapter in the contentious history of embryonic stem cell research in the United States, a field where debate has spilled out of the laboratory and into national politics.
While some overseas doctors claim to use human embryonic stem cells in their clinics, stem cell experts said they knew of no previous human studies that use such cells.
"It's a milestone, and it's a breakthrough for the field because Geron passed the safety hurdles for getting federal clearance to launch the study," said Ed Baetge, chief scientific officer of Novocell Inc. His company hopes to begin a similar human study for treating diabetes in a few years.
Embryonic stem cells can develop into any cell of the body, and scientists have long hoped to harness them for creating replacement tissues to treat a variety of diseases. But research has been controversial because embryos must be destroyed to obtain them.