Publications by authors named "Michael Zisapel"

VEXAS (vacuoles, E1 enzyme, X-linked, autoinflammatory, and somatic) syndrome is a newly described hemato-inflammatory acquired monogenic entity that presents in adulthood. One of the main features of VEXAS syndrome is a high venous thromboembolism (VTE) burden, with approximately 30-40% experiencing lower extremity deep vein thrombosis and a lower incidence of pulmonary embolism at approximately 10%. To date, VEXAS syndrome has not been associated with rarer forms of VTE such as cerebral sinus vein thrombosis (CSVT) and Budd-Chiari syndrome, which are well-recognized vascular manifestations in Behcet's disease, another autoinflammatory vasculitic disease.

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Background: VEXAS (Vacuoles, E1 enzyme, X-linked, Autoinflammatory, Somatic) is a hematoinflammatory disease that typically affects adults. It results from a somatic mutation of the E1 ubiquitin conjugating enzyme encoded by the UBA1 gene. VEXAS is frequently accompanied by myelodysplastic syndrome (MDS).

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Marked fatigue is common in patients with systemic lupus erythematosus (SLE). This study aimed to assess the association of sleep disorders, including obstructive sleep apnea (OSA), with SLE. Forty-two consecutive patients with SLE and 20 healthy controls were recruited and underwent a one-night ambulatory sleep examination.

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Treatment with rituximab (RTX) blunts SARS-CoV-2 vaccination-induced humoral response. We sought to identify predictors of a positive immunogenic response to the BNT162b2 mRNA vaccine in patients with autoimmune inflammatory rheumatic diseases (AIIRD) treated with RTX (AIIRD-RTX). We analyzed 108 AIIRD-RTX patients and 122 immunocompetent controls vaccinated with BNT162b2 mRNA participating in a multicenter vaccination study.

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Objectives: To assess the prevalence of anti-SARS-CoV-2 antibodies in autoimmune inflammatory rheumatic disease (AIIRD) patients, and to define clinical factors associated with seropositivity.

Methods: A cross sectional study was conducted at a tertiary rheumatology department in Israel. Consecutive patients completed a questionnaire and were tested for SARS-CoV-2 anti-nucleoprotein IgG (N-IgG).

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Introduction: Vaccination represents a cornerstone in mastering the COVID-19 pandemic. Data on immunogenicity and safety of messenger RNA (mRNA) vaccines in patients with autoimmune inflammatory rheumatic diseases (AIIRD) are limited.

Methods: A multicentre observational study evaluated the immunogenicity and safety of the two-dose regimen BNT162b2 mRNA vaccine in adult patients with AIIRD (n=686) compared with the general population (n=121).

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Background: It is unclear if the prevalence of COVID-19 in rheumatologic patients is similar to that of the general population. There are no reports of seroprevalence of SARS-CoV-2 in these patients.

Aims: To investigate prevalence of COVID-19 cases and seroprevalence among rheumatologic patients and the risk factors for infection.

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Rituximab, a monoclonal antibody against CD20 positive B cell, depletes these cells peripherally, and is a successful treatment in rheumatoid arthritis (RA). It is the second efficacious biologic to be established in the treatment of RA after TNFα blockers. Eighteen years of global experience from diverse clinical trials and from "real world" data, have demonstrated clinical efficacy in various disease scenarios and patient populations - short and long disease duration, methotrexate naïve patients and those with incomplete response to methotrexate, biologic naïve patients and those with incomplete response to previous biologics.

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Objective: The longterm use of tumor necrosis factor (TNF)-α blockers is limited by the formation of neutralizing antibodies. To the best of our knowledge, immunogenicity in psoriatic arthritis (PsA) has not been investigated in depth. Our objective was to evaluate the prevalence and significance of TNF-α blocker immunogenicity in PsA.

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