Cellular transplants in China: observational study from the largest human experiment in chronic spinal cord injury.
BACKGROUND
In China, fetal brain tissue has been transplanted into the lesions of more than 400 patients with spinal cord injury (SCI). Anecdotal reports have been the only basis for assuming that the procedure is safe and effective.


OBJECTIVE
To compare available reports to the experiences and objective findings of patients who received pre-operative and postoperative assessments before and up to 1 year after receiving cellular implants.


METHODS
Independent observational study of 7 chronic SCI subjects undergoing surgery by Dr Hongyun Huang in Beijing. Assessments included lesion location by magnetic resonance imaging, protocol of the American Spinal Injury Association (ASIA), change in disability, and detailed history of the perioperative course.


RESULTS
Inclusion and exclusion criteria were not clearly defined, as subjects with myelopathies graded ASIA A through D and of diverse causes were eligible. Cell injection sites did not always correlate with the level of injury and included the frontal lobes of a subject with a high cervical lesion. Complications, including meningitis, occurred in 5 subjects. Transient postoperative hypotonicity may have accounted for some physical changes. No clinically useful sensorimotor, disability, or autonomic improvements were found.


CONCLUSIONS
The phenotype and the fate of the transplanted cells, described as olfactory ensheathing cells, are unknown. Perioperative morbidity and lack of functional benefit were identified as the most serious clinical shortcomings. The procedures observed did not attempt to meet international standards for either a safety or efficacy trial. In the absence of a valid clinical trials protocol, physicians should not recommend this procedure to patients.
Department of Neurology, Neurorehabilitation and Research Program, Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095-1769, USA. bdobkin@mednet.ucla.edu
Bruce H
BH
Dobkin
Armin
A
Curt
James
J
Guest
D037881:Aborted Fetus / Q000166:cytology*; D000328:Adult; D017690:Cell Transplantation; D002681:China; D006801:Humans; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology; D009666:Nose / Q000166:cytology*; D020127:Recovery of Function / Q000502:physiology; D013119:Spinal Cord Injuries / Q000503:physiopathology / Q000601:surgery*; D014110:Touch / Q000502:physiology; D016896:Treatment Outcome