A Review on Stem Cell Therapy in Cerebral Palsy with a Focus on Motor Function Improvement

The current knowledge on how to use stem cells therapeutically for improving motor function in patients with cerebral palsy is growing. The present review aimed at assessing clinical trials related to beneficial effects of stem cells in patients with cerebral palsy. Electronic searches including “stem cell” and “cerebral palsy” as keywords were conducted using PubMed, Ovid, Web of Science, Scopus, Cochrane library, and CINAHL till February 2016. Two assessors reviewed the methodological quality and eligibility of the retrieved articles, independently. Among 77 studies initially reviewed based on the keywords, only 6 clinical trials were identified that met the inclusion criteria. Pooled response rate of stem cell therapy to treat cerebral palsy was estimated by assessing the percentage of improvement with a gross motor function classification system score. The resulting pooled estimate indicated a 30.7% (95% CI: 25.80% to 35.69%) increase in the score, 1 to 6 months after cell transplantation. In this regard, the test for heterogeneity was statistically significant (I2 = 87.9%, χ² = 41.22, P < 0.0001). Stem cell therapy has the potential to improve motor function in patients with cerebral palsy. However, promising results from limited studies warrant further research.