New-onset Post-transplant Diabetes and Therapy in Long-term Survivors After Allogeneic Hematopoietic Stem Cell Transplantation

Background: Survival after allogeneic hematopoietic stem cell transplantation (allo-HSCT) has increased but so have long-term sequelae. New-onset post-transplant diabetes mellitus (PTDM) occurs frequently following allo-HSCT. Patients and Methods: Study endpoints were incidence and risk factors of PDTM. We studied 599 adult patients suffering from either acute myeloid leukemia n=220), acute lymphoblastic leukemia (n=79), chronic myeloid leukemia (n=22), myelodysplastic syndrome/myeloproliferative neoplasm (n=105), chronic lymphocytic leukemia (n=37), lymphoma/myeloma (n=116, or non-malignant disorders (e.g. bone marrow failure, hemoglobinopathies) (n=20) who underwent myeloablative (466; 77.8%) or non-myeloablative (131; 21.9%) allo-HSCT between 2006 and 2016. Results: Altogether, 39 patients (6.5%) developed PTDM. In a competing-risk analysis, time to PTDM was associated with acute grade 2- 4 graft-versus-host-disease (p=0.017). Further cardiovascular risk factors were hypertension (n=145; 24.2%), coronary artery disease (n= 36, 6%), dyslipidemia (n=139; 23.3%), and stroke (n= 12; 2%). Conclusion: After allo-HSCT, a significant number of patients developed PTDM and patients with acute graft-versus-host-disease were found to have a higher risk for PTDM. Long-term and continuous follow-up for diabetes and cardiovascular risk factors after HSCT is important in order to be able to provide timely and appropriate treatment.