The first person treated with embryonic stem cells is an Atlanta patient paralyzed by a recent spine injury. The Geron Corp. GRNOPC1 stem cells come from embryos left over after in vitro fertilization and donated by the parents. The FDA approved the study in early 2009.
The clinical trial is a first step toward an eventual cure for paralysis, says study leader Richard Fessler, MD, PhD, professor of neurological surgery at Northwestern University Feinberg School of Medicine and a surgeon at Northwestern Memorial Hospital.
"We would love to see paralysis cured. Will that happen with this study? Of course not. We would be thrilled to see any beneficial effect at all," Fessler tells WebMD. "This is merely the first step in a long process that will take 10-25 years."
The study, taking place at up to seven medical centers, will enroll 10 patients in its first stage. Patients with complete grade A thoracic spinal cord injuries will be treated seven to 14 days after their injury. Such patients cannot move or feel their lower bodies and usually lose bladder and bowel control. Physical therapy has only limited benefits.
Before being given to patients, the embryonic cells are matured into "precursor cells" destined to become oligodendrocytes. These are the cells that make up the myelin sheaths that protect nerves in the spinal cord.
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