Microbiota Analysis to Predict Outcomes of Rheumatoid Arthritis Patients Treated With JAK-inhibitor...
Rheumatoid ArthritisPersonalized medicine in which each patient would receive the ideal personalized treatment and regimen, holds great promise to improve patient's care. However, previous studies failed to establish validated predictors of response to disease-modifying anti-rheumatic drugs (DMARDs) in patients with rheumatoid arthritis (RA). JAK inhibitors is a new class of DMARDs with great efficacy that might be even superior to anti-TNF drugs. As there are chemicals, their production cost is much cheaper than biological therapies and they will probably be central in patient's care in the coming years. Three are currently available: upadacitinib (UPA) tofacitinib and baricitinib. Our study will focus on UPA. Clinical outcomes mainly depend on i) factors influencing drug metabolism & concentrations and ii) adequacy between drug target and the inflammation pathways involved in the patient's disease. Humans carry in their gut trillions of germs, which are now known to be key players in health and disease. Those germs possess many enzymes and strongly modulate human enzymes expression. Gut-microbiota can, indeed, directly metabolize oral drugs and control the expression of the cytochrome P450 3A4 (CYP3A4), the main enzyme metabolizing TOFA. We showed, in a preliminary mouse experiment, that modifying gut-microbiota composition changes JAKi effects on signaling pathways. We thus believe that models including gut-microbiota composition together with markers of immune activation will predict clinical outcomes in RA patients treated with UPA. Main and secondary objectives: To build predictive models for clinical outcomes (efficacy and safety) of RA patients treated with UPA based on microbiota analysis and markers f immune activation. Methodolgy: This multicentric longitudinal prospective study will include 60 patients with RA and inadequate response to methotrexate. The clinical outcomes studied will be EULAR non-response at 3 months as defined by the European league against rheumatism EULAR (primary outcome), achievement of low-disease activity at 6 months or incident adverse events (secondary outcomes). Gut microbiota will be assessed at baseline and M3 from thawed fecal samples. DNA will be purified using QIAamp DNA stool mini kit (Qiagen) and qualify using Qubit and TapeStation 4200 (Agilent). Library will be prepared by amplification of V1-V2 and V3-V4 regions from the bacterial 16S rRNA genes and will be qualified by q-PCR and amplicons will be sequenced by MiSeq (Illumina). Initial bioinformatic analysis and taxonomies will be carried out using the QIIME2 software. Immune activation will be assessed through JAK-STAT pathway activation by JAK STAT signaling pathway RT² profiler PCR Array (Qiagen) which profiles expression of 84 genes related to Jak and Stat-mediated signaling. UPA concentrations will be assessed by liquid chromatography-tandem mass spectrometry (LC-MS/MS) at baseline and 3 months. Statistical classifiers (Neural network algorithm, Linear and Quadratic Discriminant Analysis, Support Vector Machine, Random forests, Shrinkage Methods, or Nearest Neighbors) incorporating microbiome, JAK STAT signaling pathway gene expression and clinical data, will be used to determine profiles associated with UPA clinical response and safety. Patients who will prematurely stop UPA (before 3 months) for adverse events or loss of follow-up will be considered as non-responders.
The Effects of Pilates Training on Exercise Capacity and Respiratory Muscle Performance in Patients...
Rheumatoid ArthritisRheumatoid arthritis (RA) is a chronic inflammatory disease associated with significant functional impairment and increased risk for cardiovascular and pulmonary disease. Along with pharmacological therapy, exercise seems to be a very promising intervention to improve disease-related outcomes, including functional capacity and systemic manifestations. Despite the fact that aerobic and strengthening exercises have been shown to be useful in patients with RA, there have been limited research on the effects of pilates training. Therefore, we aimed to investigate the effect of clinical pilates training on exercise capacity, respiratory and peripheral muscle strength, respiratory muscle endurance, respiratory function, pain, balance, core stability, dyspnea, functional status, fatigue, quality of life, depression and anxiety in patients with RA.
Proprotein Convertase Subtilisin Kexin 9 in Rheumatoid Arthritis
PCSK9Rheumatoid arthritis (RA) has been proved to increase the incidence of atrial fibrillation (AF) with persistent systemic inflammation. Proprotein convertase subtilisin/kexin type 9 (PCSK9) has been found to enhance the production of pro-inflammatory cytokines. Therefore, we performed the present study to observe the expression and significance of proprotein convertase subtilisin kexin 9 (PCSK9) in patients with RA combined atrial fibrillation.
Purify Antigen-specific B Cells From Patients With Rheumatoid Arthritis
Rheumatoid ArthritisRheumatoid arthritis (RA) is an autoimmune disease characterized by the presence of autoantibodies directed against citrullinated proteins, called ACPAs. These antibodies are very specific to RA, and the severity of the disease is closely correlated with the level of these ACPAs, even though they appear much earlier than the clinical signs. Current treatments by biotherapies are effective but only treat the inflammatory symptoms of the disease or, on the contrary, induce a global immunosuppression with a depletion of all B lymphocytes. Contrary to the current approaches, the CURE RA project proposes a double innovative character: The project aims at specifically destroying B lymphocytes expressing / or secreting ACPAs for a more specific approach to RA, without inducing immunosuppression. The new therapeutic molecule is entirely original and has no equivalent at present, it uses the target antigens of autoantibodies, the citrullinated peptides, as tools to destroy the pathogenic B cells that express/produce these autoantibodies.
Exception Cementless Hip Stem
OsteoarthritisHip5 moreThis study is a multicenter, retrospective and prospective, non-controlled, non-randomized post market clinical follow-up study. The objectives of this study are to confirm the long-term safety, performance and clinical benefits the Exception Cementless femoral stem (standard and varized) when used in primary total hip arthroplasty.
Music Therapy Model "The Bonny Method of Guided Imagery and Music" on Patients With Rheumatoid Arthritis...
Rheumatoid ArthritisQuality of Life1 moreThe aim of this study is to investigate the effect of music therapy and in particular of the model "The Bonny Method of Guided Imagery and Music (GIM)" in patients with rheumatoid arthritis (RA) in relation to both chronic pain relief and other psychosocial parameters, as well as the effect of the method on caregiver burden.
Analysis of T and B Cell Repertoire Changes in Response to Orencia® (Abatacept) in Rheumatoid Arthritis...
Rheumatoid ArthritisThe condition that will be studied is Rheumatoid Arthritis (RA), and in particular, RA patients with moderate to highly active disease who were prescribed Abatacept (Orencia®) (ABA) by their physician during their setting of care at Hospital for Special Surgery (HSS). This investigator-initiated, prospective, comparative, 3-arm observational study will examine changes in lymphocytes in RA patients starting abatacept compared to RA patients starting TNF inhibitors and to healthy controls. This will help investigators to learn more about the processes that cause joints to swell and hurt. This may also offer clues that might predict which patients will have a good or poor response to these treatments.
Psorcast Mobile Study
Psoriatic ArthritisPsoriasis7 moreThe purpose of this study is to understand variation in the symptoms of psoriasis and psoriatic arthritis using simple, scalable smartphone-based measurements. This study uses an iPhone app to record these symptoms through questionnaires and sensors.
BAFF-var as a Biomarker of Response to B-depletive Treatment in Systemic Lupus Erythematosus and...
Systemic Lupus ErythematosusRheumatoid Arthritis1 moreA variant of the TNFSF13B gene, commonly referred to as BAFF-var has been associated with an increased risk of developing immune-mediated diseases, such as Systemic Lupus Erythematosus (SLE) and Rheumatoid Arthritis (RA). This polymorphism leads to the production of higher levels of BAFFs, that in turns are associated with more severe disease, high anti-Sm and anti-dsDNA titre, complement consumption, and increased risk of flare in SLE, and higher disease activity in RA. This is a prospective study aiming to explore the immunological basis of a potential role of BAFF-var as a prognostic biomarker for response to belimumab and rituximab, the main B-depletive treatments, in SLE and RA patients, respectively. More in detail, the study aims to evaluate if the condition of BAFF-var carrier in SLE and RA patients, treated respectively, with belimumab plus standard of care or rituximab influences immunological, molecular and clinical variables, such as: (a) soluble BAFF (BAFFs) cytokine, (b) mRNA-BAFF (c) miRNA-15a (d) B-cell subpopulations (d) disease activity, as assessed by standardized clinimetric tools.
An Observational, Prospective Study to Assess the Efficacy and Safety of Adalloce in Patients With...
Rheumatoid ArthritisAnkylosing SpondylitisThis Study is to Assess the Efficacy and Safety of Adalloce in Patients With Rheumatoid Arthritis and Ankylosing Spondylitis, An Observational, Prospective Study