Scientists extracted fat cells from the patient, turned them into stem cells (induced pluripotent stem cells), then back into pancreatic islet cells now able to produce insulin. These functioning islet cells were then simply injected into the patient’s abdominal muscles. Injection into the abdominal wall minimized invasiveness and avoided inflammation compared to previous practices of injection into the liver. The entire injection procedure took less than half an hour.

Because the cells are from the patient’s own body, they don’t need a compatible donor and experience no immune rejection to the transplant.

Afterwards, the patient’s blood sugar levels became normal and they no longer needed external insulin.

Here’s the research paper link: https://www.cell.com/cell/abstract/S0092-8674(24)01022-5