What Happened: The landscape of neurodegenerative medicine shifted significantly this week as data from multiple clinical trials, including those led by BlueRock Therapeutics and Aspen Neuroscience, demonstrated a major proof-of-concept for stem cell therapy in Parkinson’s Disease (PD). For decades, Parkinson’s has been defined by the progressive loss of dopamine-producing neurons in the brain, leading to tremors, rigidity, and loss of balance. While medications like Levodopa