Implementation of a nationwide program for total pancreatectomy and islet autotransplantation in chronic pancreatitis: A Scandinavian single-center observational study.

Background: Tailoring surgical treatment is mandatory to optimize outcomes in chronic pancreatitis. Total pancreatectomy (TP) offers pain relief in a subset of patients. TP with islet autotransplantation (IAT) has the potential to reduce the burden of postsurgical diabetes. We present the first Scandinavian prospective study assessing outcomes following total pancreatectomy and islet autotransplantation (TPIAT) in chronic pancreatitis. Our aim was to assess short- and long-term outcomes following implementation of a nationwide program of TPIAT at a tertiary reference center for pancreatic surgery in Norway.

Methods: A prospective, observational single-center study enrolling consecutive patients undergoing TPIAT for chronic pancreatitis at Oslo University Hospital. The selection of potential candidates for TPIAT was based on discussions at multidisciplinary team (MDT) meetings, focusing on tailored surgery in chronic pancreatitis. Patients were finally evaluated in a dedicated TPIAT team. The outcome measures included pain relief, quality of life (QoL) assessed by EORTC QLQ-C30, complications, and glycemic control.

Results: Between August 2017 and November 2022, 15 patients underwent TPIAT. The follow-up rate was 87% with a median follow-up of 26 months (range = 14-65). Pain relief was achieved in 92%. EORTC QLQ-C30 analysis revealed clinically significant improvements in 28 of 30 domains, particularly in pain and role- and social-functioning. The Clavien-Dindo ≥IIIa complications occurred in one patient. There was no 90 days mortality. All patients maintained C-peptide positivity, although none of the patients reached insulin independence.

Conclusion: TPIAT was as a safe and effective treatment for a selected group of patients with chronic pancreatitis, providing substantial pain relief and enhanced QoL. Islet autotransplantation prevented complete insulin deficiency, reducing diabetes severity postpancreatectomy. Dedicated chronic pancreatitis MDT meetings were key factor in the success of the program.