Comment by Miner49er

I recently learned of some research that had a human trial that looked like it could potentially cure Multiple sclerosis (MS) and even potentially many (maybe all?) autoimmune diseases. However, it was too expensive, so no pharmaceutical companies picked it up. It was only when the researchers found a cheaper way of doing it that biopharmas were interested.

Source is in this video, link starts at 5:35, watch until 8:15ish. https://youtu.be/J8vdDy7SN9k?t=335