PMID- 37768647 OWN - NLM STAT- MEDLINE DCOM- 20240304 LR - 20240304 IS - 1876-4479 (Electronic) IS - 1873-9946 (Linking) VI - 18 IP - 3 DP - 2024 Mar 1 TI - Human Leukocyte Antigen Signatures as Pathophysiological Discriminants of Microscopic Colitis Subtypes. PG - 349-359 LID - 10.1093/ecco-jcc/jjad165 [doi] AB - BACKGROUND AND AIMS: Microscopic colitis [MC] is currently regarded as an inflammatory bowel disease that manifests as two subtypes: collagenous colitis [CC] and lymphocytic colitis [LC]. Whether these represent a clinical continuum or distinct entities is, however, an open question. Genetic investigations may contribute important insight into their respective pathophysiologies. METHODS: We conducted a genome-wide association study [GWAS] meta-analysis in 1498 CC, 373 LC patients, and 13 487 controls from Europe and the USA, combined with publicly available MC GWAS data from UK Biobank and FinnGen [2599 MC cases and 552 343 controls in total]. Human leukocyte antigen [HLA] alleles and polymorphic residues were imputed and tested for association, including conditional analyses for the identification of key causative variants and residues. Genetic correlations with other traits and diagnoses were also studied. RESULTS: We detected strong HLA association with CC, and conditional analyses highlighted the DRB1*03:01 allele and its residues Y26, N77, and R74 as key to this association (best p = 1.4 x 10-23, odds ratio [OR] = 1.96). Nominally significant genetic correlations were detected between CC and pneumonia [rg = 0.77; p = 0.048] and oesophageal diseases [rg = 0.45, p = 0.023]. An additional locus was identified in MC GWAS analyses near the CLEC16A and RMI2 genes on chromosome 16 [rs35099084, p = 2.0 x 10-8, OR = 1.31]. No significant association was detected for LC. CONCLUSION: Our results suggest CC and LC have distinct pathophysiological underpinnings, characterised by an HLA predisposing role only in CC. This challenges existing classifications, eventually calling for a re-evaluation of the utility of MC umbrella definitions. CI - (c) The Author(s) 2023. Published by Oxford University Press on behalf of European Crohn's and Colitis Organisation. All rights reserved. For permissions, please email: journals.permissions@oup.com. FAU - Zheng, Tenghao AU - Zheng T AUID- ORCID: 0000-0003-1587-7481 AD - School of Biological Sciences, Monash University, Clayton, VIC, Australia. AD - Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden. AD - Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden. FAU - Roda, Giulia AU - Roda G AD - Biostructures and Biosystems National Institute, Rome, Italy. FAU - Zabana, Yamile AU - Zabana Y AUID- ORCID: 0000-0003-4023-8868 AD - Gastroenterology Department, Hospital Universitari Mutua de Terrassa, Barcelona, Spain. AD - Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas, Barcelona, Spain. FAU - Escudero-Hernandez, Celia AU - Escudero-Hernandez C AD - Department of Biomedical and Clinical Sciences, Linkoping University, Linkoping, Sweden. AD - Institute of Clinical Molecular Biology, Kiel University and University Medical Center Schleswig-Holstein, Kiel, Germany. FAU - Liu, Xingrong AU - Liu X AD - Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden. AD - Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden. FAU - Chen, Ye AU - Chen Y AD - Division of Gastroenterology, Massachusetts General Hospital, Boston, MA, USA. FAU - Camargo Tavares, Leticia AU - Camargo Tavares L AUID- ORCID: 0000-0001-7278-0999 AD - School of Biological Sciences, Monash University, Clayton, VIC, Australia. FAU - Bonfiglio, Ferdinando AU - Bonfiglio F AUID- ORCID: 0000-0003-2488-3867 AD - School of Biological Sciences, Monash University, Clayton, VIC, Australia. AD - Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden. FAU - Mellander, Marie-Rose AU - Mellander MR AD - Department of Clinical Sciences, Lund University, Lund, Sweden. FAU - Janczewska, Izabella AU - Janczewska I AD - Medical Department, Ersta Hospital, Stockholm, Sweden. FAU - Vigren, Lina AU - Vigren L AD - Department of Clinical Sciences, Lund University, Lund, Sweden. FAU - Sjoberg, Klas AU - Sjoberg K AD - Department of Clinical Sciences, Lund University, Skane University Hospital, Malmo, Sweden. FAU - Ohlsson, Bodil AU - Ohlsson B AUID- ORCID: 0000-0002-9142-5244 AD - Department of Clinical Sciences, Lund University, Skane University Hospital, Malmo, Sweden. FAU - Almer, Sven AU - Almer S AD - Division of Gastroenterology, Department of Gastroenterology, Dermatology and Rheumatology, Karolinska University Hospital, Stockholm, Sweden. FAU - Halfvarson, Jonas AU - Halfvarson J AUID- ORCID: 0000-0003-0122-7234 AD - Department of Gastroenterology, Faculty of Medicine and Health, Orebro University Hospital, Orebro, Sweden. FAU - Miehlke, Stephan AU - Miehlke S AD - Centre for Digestive Diseases, Internal Medicine Centre Eppendorf, and Centre for Oesophageal Disorders, University Hospital Eppendorf, Hamburg, Germany. FAU - Madisch, Ahmed AU - Madisch A AD - Department of Gastroenterology, CRH Clinic Siloah, Hannover, Germany. FAU - Lieb, Wolfgang AU - Lieb W AD - Institute of Epidemiology, Christian-Albrechts-University of Kiel, Kiel, Germany. FAU - Kupcinskas, Juozas AU - Kupcinskas J AD - Department of Gastroenterology, Lithuanian University of Health Sciences, Kaunas, Lithuania. FAU - Weersma, Rinse K AU - Weersma RK AD - Department of Gastroenterology and Hepatology, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands. FAU - Bujanda, Luis AU - Bujanda L AD - Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas, Barcelona, Spain. AD - Department of Liver and Gastrointestinal Diseases, Biodonostia Health Research Institute, Donostia University Hospital, Universidad del Pais Vasco, San Sebastian, Spain. FAU - Julia, Antonio AU - Julia A AUID- ORCID: 0000-0001-6064-3620 AD - Rheumatology Research Group, Vall d' Hebron Research Institute, Barcelona, Spain. FAU - Marsal, Sara AU - Marsal S AD - Rheumatology Research Group, Vall d' Hebron Research Institute, Barcelona, Spain. FAU - Esteve, Maria AU - Esteve M AD - Gastroenterology Department, Hospital Universitari Mutua de Terrassa, Barcelona, Spain. AD - Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas, Barcelona, Spain. FAU - Guagnozzi, Danila AU - Guagnozzi D AD - Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas, Barcelona, Spain. AD - Department of Gastroenterology, Vall d'Hebron University Hospital, Neuro-Immuno-Gastroenterology Group, Digestive System Research Unit, Vall d'Hebron Institut de Recerca, Barcelona, Spain. FAU - Fernandez-Banares, Fernando AU - Fernandez-Banares F AUID- ORCID: 0000-0002-1489-504X AD - Gastroenterology Department, Hospital Universitari Mutua de Terrassa, Barcelona, Spain. AD - Centro de Investigacion Biomedica en Red de Enfermedades Hepaticas y Digestivas, Barcelona, Spain. FAU - Ferrer, Carmen AU - Ferrer C AD - Pathology Department, Hospital Universitari Mutua de Terrassa, Barcelona, Spain. CN - MC-Europe GETECCU GWAS group FAU - Peter, Inga AU - Peter I AD - Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Ludvigsson, Jonas F AU - Ludvigsson JF AD - Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden. FAU - Pardi, Darrell AU - Pardi D AUID- ORCID: 0000-0003-0420-8784 AD - Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA. FAU - Verhaegh, Bas AU - Verhaegh B AUID- ORCID: 0000-0002-2111-5363 AD - Division Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands. FAU - Jonkers, Daisy AU - Jonkers D AD - Division Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands. FAU - Pierik, Marieke AU - Pierik M AUID- ORCID: 0000-0001-6981-6516 AD - Division Gastroenterology-Hepatology, Department of Internal Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands. FAU - Munch, Andreas AU - Munch A AUID- ORCID: 0000-0003-4703-581X AD - Department of Biomedical and Clinical Sciences, Linkoping University, Linkoping, Sweden. AD - Department of Gastroenterology and Hepatology, Linkoping University, Linkoping, Sweden. AD - Department of Health, Medicine, and Caring Sciences, Linkoping University, Linkoping, Sweden. FAU - Franke, Andre AU - Franke A AD - Institute of Clinical Molecular Biology, Kiel University and University Medical Center Schleswig-Holstein, Kiel, Germany. FAU - Bresso, Francesca AU - Bresso F AD - Division of Gastroenterology, Department of Gastroenterology, Dermatology and Rheumatology, Karolinska University Hospital, Stockholm, Sweden. FAU - Khalili, Hamed AU - Khalili H AD - Division of Gastroenterology, Massachusetts General Hospital, Boston, MA, USA. AD - Clinical and Translational Epidemiology Unit, Massachusetts General Hospital, Boston, MA, USA. AD - Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA. FAU - Colombel, Jean-Frederic AU - Colombel JF AUID- ORCID: 0000-0001-6472-249X AD - Dr Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - D'Amato, Mauro AU - D'Amato M AUID- ORCID: 0000-0003-2743-5197 AD - Clinical Epidemiology Division, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden. AD - Gastrointestinal Genetics Lab, CIC bioGUNE - BRTA, Derio, Spain. AD - Ikerbasque, Basque Foundation for Science, Bilbao, Spain. AD - Department of Medicine and Surgery, LUM University, Casamassima, Italy. LA - eng GR - VR 2017-02403/Swedish Research Council/ PT - Journal Article PT - Meta-Analysis PL - England TA - J Crohns Colitis JT - Journal of Crohn's & colitis JID - 101318676 RN - 0 (HLA Antigens) RN - 0 (Histocompatibility Antigens Class II) SB - IM CIN - J Crohns Colitis. 2024 Jan 04;:. PMID: 38174741 MH - Humans MH - Genome-Wide Association Study MH - HLA Antigens/genetics MH - Histocompatibility Antigens Class II MH - *Colitis, Microscopic/genetics MH - *Colitis, Lymphocytic/genetics MH - *Colitis, Collagenous OTO - NOTNLM OT - GWAS OT - HLA OT - Microscopic colitis OT - collagenous colitis OT - genetics FIR - Zabana, Yamile IR - Zabana Y FIR - Fernandez-Banares, Fernando IR - Fernandez-Banares F FIR - Esteve, Maria IR - Esteve M FIR - Piqueras, Marta IR - Piqueras M FIR - Busquets, David IR - Busquets D FIR - Iglesias, Eva IR - Iglesias E FIR - Lucendo, Alfredo J IR - Lucendo AJ EDAT- 2023/09/28 12:43 MHDA- 2024/03/04 06:45 CRDT- 2023/09/28 11:32 PHST- 2023/05/17 00:00 [received] PHST- 2023/07/29 00:00 [revised] PHST- 2023/09/26 00:00 [accepted] PHST- 2024/03/04 06:45 [medline] PHST- 2023/09/28 12:43 [pubmed] PHST- 2023/09/28 11:32 [entrez] AID - 7285336 [pii] AID - 10.1093/ecco-jcc/jjad165 [doi] PST - ppublish SO - J Crohns Colitis. 2024 Mar 1;18(3):349-359. doi: 10.1093/ecco-jcc/jjad165.