Sana Biotechnology highlights durable islet cell function in NEJM
Sana Biotechnology, Inc. announced publication of 14-month data in The New England Journal of Medicine for UP421, showing durable insulin production without immunosuppression. The study confirmed cell survival and safety via C-peptide levels and PET-MRI scanning. Sana plans to file an IND for SC451 and start a Phase 1/2 trial this year.

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Sana Biotechnology, Inc. announced that The New England Journal of Medicine (NEJM) has published a peer-reviewed Letter to the Editor highlighting 14-month follow-up data from an investigator-sponsored study of UP421. The data indicates that hypoimmune (HIP)-modified islet cells can safely evade detection by the immune system, survive, and function long-term without the need for immunosuppression in patients with type 1 diabetes.
The study, conducted by clinicians at Uppsala University Hospital, demonstrated that the patient achieved detectable levels of C-peptide, a biomarker for insulin production, at 14 months post-transplantation. These levels were comparable to those observed in the first six months and exceeded measurements taken at months 9 and 12. Additionally, 52-week PET-MRI scanning confirmed the presence of islet cells at the transplant site in the forearm muscle.
Study Findings and Clinical Implications
The long-term findings support the potential of Sana’s HIP-modified, stem cell-derived pancreatic islet cell therapy, SC451. The company is advancing SC451 as a one-time treatment designed to achieve long-term normal blood glucose without the need for insulin therapy or immunosuppression.
| Metric | Result at 14 Months |
|---|---|
| C-peptide levels | Comparable to first six months; exceeded months 9 and 12 |
| Glycemic control | Tighter control achieved between months 12 and 14 |
| Safety | No safety issues identified |
| Cell survival | Confirmed via 52-week PET-MRI scan |
Future Development Plans
Sana Biotechnology expects to file an Investigational New Drug (IND) application and initiate a Phase 1/2 trial for SC451 as early as this year. The investigator-sponsored study of UP421 is supported by a grant from The Leona M. and Harry B. Helmsley Charitable Trust and evaluates the safety of HIP-modified insulin-producing pancreatic islet cells transplanted without simultaneous immunosuppressive medicines.
What are the primary endpoints and patient enrollment targets for the upcoming Phase 1/2 trial of SC451?
How might the FDA view the lack of immunosuppression in the IND application given the historical safety concerns with cell therapies?
What is the anticipated timeline for potential regulatory approval if Phase 1/2 trials demonstrate safety and efficacy?

























