PMID- 28680339 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 1426-3912 (Print) IS - 1644-4124 (Electronic) IS - 1426-3912 (Linking) VI - 42 IP - 1 DP - 2017 TI - Exceptional manifestation of polyautoimmunity in a very young girl - a case report. PG - 107-110 LID - 10.5114/ceji.2017.67324 [doi] AB - Polyautoimmunity is defined as the presence of more than one autoimmune disease in a single patient. The exact pathogenic mechanisms responsible for the coexistence of distinct autoimmune diseases within an individual have not been clearly explained. We report a case of a very young girl with the extremely rare co-existence of four distinct autoimmune diseases i.e. juvenile idiopathic arthritis, type 1 diabetes mellitus, coeliac disease and autoimmune hepatitis, recognized based on validated international classification criteria. The best to our knowledge there has been no case reporting coexistence of these particular four disorders in an individual. Moreover, all these diseases occurred during first three years of life, which also cause that case unique. Molecular studies of human leukocyte antigen (HLA) class II in our patient showed the presence of the HLA DRB1*01, HLA DRB1*03, HLA DQB1*02, HLA DQB1*05 molecules, which may suggest immunogenetic links between those autoimmune diseases. The presented case highlights the importance of active screening for other autoimmune diseases, if a patient with one autoimmune disease manifests with new or nonspecific symptoms. FAU - Mroczkowska-Juchkiewicz, Agnieszka AU - Mroczkowska-Juchkiewicz A AD - Department of Paediatrics, Medical University of Lublin, Lublin, Poland. FAU - Postepski, Jacek AU - Postepski J AD - Department of Paediatric Pulmonology and Rheumatology, Medical University of Lublin, Lublin, Poland. FAU - Olesinska, Edyta AU - Olesinska E AD - Department of Paediatric Pulmonology and Rheumatology, Medical University of Lublin, Lublin, Poland. FAU - Krawiec, Paulina AU - Krawiec P AD - Department of Paediatrics, Medical University of Lublin, Lublin, Poland. FAU - Pac-Kozuchowska, Elzbieta AU - Pac-Kozuchowska E AD - Department of Paediatrics, Medical University of Lublin, Lublin, Poland. LA - eng PT - Case Reports DEP - 20170508 PL - Poland TA - Cent Eur J Immunol JT - Central-European journal of immunology JID - 9702239 PMC - PMC5470620 OTO - NOTNLM OT - autoimmune hepatitis OT - celiac disease OT - juvenile idiopathic arthritis OT - polyautoimmunity OT - type 1 diabetes COIS- The authors declare no conflict of interest. EDAT- 2017/07/07 06:00 MHDA- 2017/07/07 06:01 PMCR- 2017/01/01 CRDT- 2017/07/07 06:00 PHST- 2016/03/30 00:00 [received] PHST- 2016/05/13 00:00 [accepted] PHST- 2017/07/07 06:00 [entrez] PHST- 2017/07/07 06:00 [pubmed] PHST- 2017/07/07 06:01 [medline] PHST- 2017/01/01 00:00 [pmc-release] AID - 29852 [pii] AID - 10.5114/ceji.2017.67324 [doi] PST - ppublish SO - Cent Eur J Immunol. 2017;42(1):107-110. doi: 10.5114/ceji.2017.67324. Epub 2017 May 8.