A Study to Investigate the Safety and Efficacy of UC-MSCs in Pediatric Patients With Cerebral Palsy

Inclusion Criteria: * Age \>= 12 months and \< 24 months corrected age at the time of informed consent * Diagnosed with cerebral palsy * Diagnosed with PVL * GMFCS level between II and IV * Able to obtain written informed consent from parents (legal representative) Exclusion Criteria: * Presence of progressive neurological disease * Presence of congenital anomaly * Diagnosed with Grade 3 or more severe intraventricular hemorrhage * Body weight \< 5kg * Profound intellectual disorder * Complication of serious infection such as sepsis * Requirement of mechanical ventilation * Complication of serious organ failure such as kidney, liver or heart diseases or others and considered to be inappropriate * Diagnosed with or suspected of hypsarrhythmia * Positive for HBV, HCV, HIV or HTLV-1 * Patients who have received cell therapy * Patients who have undergone selective dorsal rhizotomy or received botulinum toxin products within a certain period of time