1. Hereditary systemic autoinflammatory diseases and Schnitzler's syndromeMark Kačar, Shelly Pathak, Sinisa Savic, 2019, pregledni znanstveni članek Povzetek: The systemic autoinflammatory diseases are disorders of the innate immune system distinguished by severe inflammation resulting from dysregulation of the innate immune system. Hereditary fever syndromes, such as FMF, TNF receptor-associated periodic syndrome, cryopyrin-associated periodic syndromes and mevalonate kinase deficiency, were the first group of systemic autoinflammatory diseases for which a genetic basis was established, between 1999 and 2001. Currently according to the latest report of the international union of immunological societies, 37 separate monogenic disorders were classified as autoinflammatory. In addition to the abovementioned monogenic conditions, we describe Schnitzler's syndrome, a well-defined, acquired autoinflammatory condition without a clear genetic basis. For the purposes of this review, we discuss several conditions defined by the latest consensus process as systemic autoinflammatory diseases. We focus on those disorders where recent studies have contributed to further phenotypic characterization or had an impact on clinical management. Ključne besede: pyrin, Schnitzler syndrome, haploinsufficiency, autoinflammatory diseases, pyrin-associated autoinflammatory diseases, NLRP3-related autoinflammatory diseases, undifferentiated systemic autoinflammatory disease, relopathies Objavljeno v DiRROS: 08.04.2021; Ogledov: 1432; Prenosov: 1077
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2. Evidence of B cell clonality and investigation into properties of the IgM in patients with Schnitzler syndromeShelly Pathak, Dorota Rowczenio, Samuel Lara-Reyna, Mark Kačar, Roger Owen, Gina Doody, Karoline Krause, Helen J Lachmann, Rainer Doffinger, Darren Newton, Sinisa Savic, 2020, izvirni znanstveni članek Povzetek: The Schnitzler Syndrome (SchS) is an acquired, autoinflammatory condition successfully treated with IL-1 inhibition. The two main defining features of this late-onset condition are neutrophilic urticarial dermatoses (NUD) and the presence of an IgM monoclonal component. While the former aspect has been extensively studied in this disease setting, the enigmatic paraproteinaemia and its potential consequential effects within SchS, has not previously been thoroughly addressed. Previous studies analyzing clonal B cell repertoires have largely focused on autoimmune disorders such as Systemic Lupus Erythematous (SLE) and hematological malignancies such as Chronic Lymphocytic Leukaemia (CLL), where B-cell clonality is central to disease pathology. The present study uses next-generation sequencing to provide detailed insight into aspects of B cell VDJ recombination and properties of the resulting immunoglobulin chains. An overview of IgH regional dynamics in 10 SchS patients, with a particular focus on CDR3 sequences and VDJ gene usage is reported, highlighting the presence of specific B cell expansions. Protein microarray detected a substantial proportion of autoreactive IgM to nuclear target proteins, though a single universal target was not identified. Together, these genetic and functional findings impart new understanding into this rare disorder. Ključne besede: Schnitzler syndrome, B-lymhocytes, paraproteinemias, pararoteins, immunoglobulin M, autoinflammatory diseases, IgM Objavljeno v DiRROS: 08.04.2021; Ogledov: 1418; Prenosov: 922
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