PMID- 36090979 OWN - NLM STAT- MEDLINE DCOM- 20220913 LR - 20220914 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 13 DP - 2022 TI - Natural history of type 1 diabetes on an immunodysregulatory background with genetic alteration in B-cell activating factor receptor: A case report. PG - 952715 LID - 10.3389/fimmu.2022.952715 [doi] LID - 952715 AB - The immunological events leading to type 1 diabetes (T1D) are complex and heterogeneous, underscoring the necessity to study rare cases to improve our understanding. Here, we report the case of a 16-year-old patient who showed glycosuria during a regular checkup. Upon further evaluation, stage 2 T1D, autoimmune thrombocytopenic purpura (AITP), and common variable immunodeficiency (CVID) were diagnosed. The patient underwent low carb diet, losing > 8 kg, and was placed on Ig replacement therapy. Anti-CD20 monoclonal antibody (Rituximab, RTX) was administered 2 years after diagnosis to treat peripheral polyneuropathy, whereas an atypical mycobacteriosis manifested 4 years after diagnosis and was managed with prolonged antibiotic treatment. In the fifth year of monitoring, the patient progressed to insulin dependency despite ZnT8A autoantibody resolution and IA-2A and GADA autoantibody decline. The patient had low T1D genetic risk score (GRS = 0.22817) and absence of human leukocyte antigen (HLA) DR3/DR4-DQ8. Genetic analysis identified the monoallelic mutation H159Y in TNFRSF13C, a gene encoding B-cell activating factor receptor (BAFFR). Significant reduced blood B-cell numbers and BAFFR levels were observed in line with a dysregulation in BAFF-BAFFR signaling. The elevated frequency of PD-1(+) dysfunctional Tfh cells composed predominantly by Th1 phenotype was observed at disease onset and during follow-up. This case report describes a patient progressing to T1D on a BAFFR-mediated immunodysregulatory background, suggesting a role of BAFF-BAFFR signaling in islet-specific tolerance and T1D progression. CI - Copyright (c) 2022 Di Lorenzo, Pacillo, Milardi, Jofra, Di Cesare, Gerosa, Marzinotto, Zapparoli, Rivalta, Cifaldi, Barzaghi, Giancotta, Zangari, Rapini, Deodati, Amodio, Passerini, Carrera, Gregori, Palma, Finocchi, Lampasona, Cicalese, Schiaffini, Di Matteo, Merelli, Barcella, Aiuti, Piemonti, Cancrini and Fousteri. FAU - Di Lorenzo, Biagio AU - Di Lorenzo B AD - Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy. FAU - Pacillo, Lucia AU - Pacillo L AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. AD - Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Milardi, Giulia AU - Milardi G AD - Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy. FAU - Jofra, Tatiana AU - Jofra T AD - Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy. FAU - Di Cesare, Silvia AU - Di Cesare S AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. FAU - Gerosa, Jolanda AU - Gerosa J AD - Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy. FAU - Marzinotto, Ilaria AU - Marzinotto I AD - Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy. FAU - Zapparoli, Ettore AU - Zapparoli E AD - Center for Omics Sciences, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milano, Italy. FAU - Rivalta, Beatrice AU - Rivalta B AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. AD - Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Cifaldi, Cristina AU - Cifaldi C AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. AD - Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Barzaghi, Federica AU - Barzaghi F AD - San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. AD - Pediatric Immunohematology and Bone Marrow Transplantation Unit, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. FAU - Giancotta, Carmela AU - Giancotta C AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. AD - Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Zangari, Paola AU - Zangari P AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. AD - Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Rapini, Novella AU - Rapini N AD - Unit of Endocrinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Deodati, Annalisa AU - Deodati A AD - Unit of Endocrinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Amodio, Giada AU - Amodio G AD - San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. FAU - Passerini, Laura AU - Passerini L AD - San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. FAU - Carrera, Paola AU - Carrera P AD - Unit of Genomics for Human Disease Diagnosis and Laboratory of Clinical Molecular Biology, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy. FAU - Gregori, Silvia AU - Gregori S AD - San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. FAU - Palma, Paolo AU - Palma P AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. AD - Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Finocchi, Andrea AU - Finocchi A AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. AD - Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Lampasona, Vito AU - Lampasona V AD - Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy. FAU - Cicalese, Maria Pia AU - Cicalese MP AD - San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. AD - Pediatric Immunohematology and Bone Marrow Transplantation Unit, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. AD - Faculty of Medicine, University Vita-Salute San Raffaele, Milan, Italy. FAU - Schiaffini, Riccardo AU - Schiaffini R AD - Unit of Endocrinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Di Matteo, Gigliola AU - Di Matteo G AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. FAU - Merelli, Ivan AU - Merelli I AD - San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. AD - Department of Bioinformatics, Institute for Biomedical Technologies National Research Council, Segrate, Italy. FAU - Barcella, Matteo AU - Barcella M AD - San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. AD - Department of Bioinformatics, Institute for Biomedical Technologies National Research Council, Segrate, Italy. FAU - Aiuti, Alessandro AU - Aiuti A AD - San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. AD - Pediatric Immunohematology and Bone Marrow Transplantation Unit, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy. AD - Faculty of Medicine, University Vita-Salute San Raffaele, Milan, Italy. FAU - Piemonti, Lorenzo AU - Piemonti L AD - Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy. FAU - Cancrini, Caterina AU - Cancrini C AD - Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy. AD - Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesu Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy. FAU - Fousteri, Georgia AU - Fousteri G AD - Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy. LA - eng PT - Case Reports PT - Research Support, Non-U.S. Gov't DEP - 20220826 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Autoantibodies) RN - 0 (B-Cell Activating Factor) RN - 0 (Insulin) SB - IM MH - Adolescent MH - Autoantibodies MH - B-Cell Activating Factor/genetics MH - *Diabetes Mellitus, Type 1 MH - Humans MH - Insulin/genetics MH - Mutation PMC - PMC9459137 OTO - NOTNLM OT - BAFFR mutation OT - circulating T follicular helper cells (cTfh) OT - common variable immunodeficiency (CVID) OT - islet autoimmunity OT - type 1 diabetes (T1D) 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- 2022/09/13 06:00 MHDA- 2022/09/14 06:00 PMCR- 2022/01/01 CRDT- 2022/09/12 03:53 PHST- 2022/05/25 00:00 [received] PHST- 2022/08/02 00:00 [accepted] PHST- 2022/09/12 03:53 [entrez] PHST- 2022/09/13 06:00 [pubmed] PHST- 2022/09/14 06:00 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2022.952715 [doi] PST - epublish SO - Front Immunol. 2022 Aug 26;13:952715. doi: 10.3389/fimmu.2022.952715. eCollection 2022.