PMID- 35903316 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220731 IS - 2296-858X (Print) IS - 2296-858X (Electronic) IS - 2296-858X (Linking) VI - 9 DP - 2022 TI - From Disease and Patient Heterogeneity to Precision Medicine in Type 1 Diabetes. PG - 932086 LID - 10.3389/fmed.2022.932086 [doi] LID - 932086 AB - Type 1 diabetes (T1D) remains a devastating disease that requires much effort to control. Life-long daily insulin injections or an insulin pump are required to avoid severe complications. With many factors contributing to disease onset, T1D is a complex disease to cure. In this review, the risk factors, pathophysiology and defect pathways are discussed. Results from (pre)clinical studies are highlighted that explore restoration of insulin production and reduction of autoimmunity. It has become clear that treatment responsiveness depends on certain pathophysiological or genetic characteristics that differ between patients. For instance, age at disease manifestation associated with efficacy of immune intervention therapies, such as depleting islet-specific effector T cells or memory B cells and increasing immune regulation. The new challenge is to determine in whom to apply which intervention strategy. Within patients with high rates of insulitis in early T1D onset, therapy depleting T cells or targeting B lymphocytes may have a benefit, whereas slow progressing T1D in adults may be better served with more sophisticated, precise and specific disease modifying therapies. Genetic barcoding and immune profiling may help determining from which new T1D endotypes patients suffer. Furthermore, progressed T1D needs replenishment of insulin production besides autoimmunity reversal, as too many beta cells are already lost or defect. Recurrent islet autoimmunity and allograft rejection or necrosis seem to be the most challenging obstacles. Since beta cells are highly immunogenic under stress, treatment might be more effective with stress reducing agents such as glucagon-like peptide 1 (GLP-1) analogs. Moreover, genetic editing by CRISPR-Cas9 allows to create hypoimmunogenic beta cells with modified human leukocyte antigen (HLA) expression that secrete immune regulating molecules. Given the differences in T1D between patients, stratification of endotypes in clinical trials seems essential for precision medicines and clinical decision making. CI - Copyright (c) 2022 Hollander and Roep. FAU - den Hollander, Nicoline H M AU - den Hollander NHM AD - Department of Internal Medicine, Leiden University Medical Center, Leiden, Netherlands. AD - Graduate School, Utrecht University, Utrecht, Netherlands. FAU - Roep, Bart O AU - Roep BO AD - Department of Internal Medicine, Leiden University Medical Center, Leiden, Netherlands. LA - eng PT - Journal Article PT - Review DEP - 20220712 PL - Switzerland TA - Front Med (Lausanne) JT - Frontiers in medicine JID - 101648047 PMC - PMC9314738 OTO - NOTNLM OT - autoimmune disease (AD) OT - disease endotypes OT - disease heterogeneity OT - genetic risk score OT - immune intervention therapy OT - islet autoimmunity OT - type 1 diabetes immunopathogenesis COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/07/30 06:00 MHDA- 2022/07/30 06:01 PMCR- 2022/07/12 CRDT- 2022/07/29 01:58 PHST- 2022/04/29 00:00 [received] PHST- 2022/06/13 00:00 [accepted] PHST- 2022/07/29 01:58 [entrez] PHST- 2022/07/30 06:00 [pubmed] PHST- 2022/07/30 06:01 [medline] PHST- 2022/07/12 00:00 [pmc-release] AID - 10.3389/fmed.2022.932086 [doi] PST - epublish SO - Front Med (Lausanne). 2022 Jul 12;9:932086. doi: 10.3389/fmed.2022.932086. eCollection 2022.