Researchers published in Nature Biotechnology that transplanting human embryonic stem cell–derived spinal cord neural stem cells (H9‑scNSCs) restored forelimb function in rhesus monkeys with spinal cord injury. The studies reported functional recovery in a substantial fraction of treated animals and detailed safety and engraftment outcomes that support clinical translation. Nature Biotechnology and companion reports highlighted the magnitude of motor recovery—hand and grasp function—making this one of the most compelling preclinical demonstrations of neural stem‑cell repair relevant to human spinal cord injury. Authors and journal sources position the work as a pivotal dataset for potential first‑in‑human trials.