Multi-ancestry genome-wide association analyses identify novel genetic mechanisms in rheumatoid arthritis.

Rheumatoid arthritis (RA) is a highly heritable complex disease with unknown etiology. Multi-ancestry genetic research of RA promises to improve power to detect genetic signals, fine-mapping resolution and performances of polygenic risk scores (PRS). Here, we present a large-scale genome-wide association study (GWAS) of RA, which includes 276,020 samples from five ancestral groups.

Correction: Epidemiology and treatment patterns of rheumatoid arthritis in a large cohort of Arab patients.

[This corrects the article DOI: 10.1371/journal.pone.

Epidemiology and treatment patterns of rheumatoid arthritis in a large cohort of Arab patients.

Objectives: There is limited information on the epidemiology and treatment patterns of rheumatoid arthritis (RA) across the Arab region. We aim in this study to describe the demographic characteristics, clinical profile, and treatment patterns of patients of Arab ancestry with RA.

Methods: This is a cross sectional study of 895 patients with established rheumatoid arthritis enrolled from five sites (Jordan, Lebanon, Qatar, Kingdom of Saudi Arabia (KSA), and United Arab Emirates).

Correction to: Recommendations for the management of rheumatoid arthritis in the Eastern Mediterranean region: an adolopment of the 2015 American College of Rheumatology guidelines.

In the original version of this article the first name of the co-author was incorrectly spelled as "Khaled A. Alnaqbi". The correct spelling should have been "Khalid A.

Recommendations for the management of rheumatoid arthritis in the Eastern Mediterranean region: an adolopment of the 2015 American College of Rheumatology guidelines.

Clinical practice guidelines can assist rheumatologists in the proper prescription of newer treatment for rheumatoid arthritis (RA). The objective of this paper is to report on the recommendations for the management of patients with RA in the Eastern Mediterranean region. We adapted the 2015 American College of Rheumatology guidelines in two separate waves.

Rheumatic manifestations of inflammatory bowel diseases: A study from the Middle East.

Objective To examine the prevalence of rheumatic manifestations among patients with inflammatory bowel disease (IBD). Methods This prospective study enrolled patients with IBD in whom the diagnosis and extent of IBD were confirmed by colonoscopy and histopathology. Patients were interviewed and examined by a rheumatologist.

An Underlooked Cause of Periodic Fever (PFAPA) in an Adult Patient with No Response to Tonsillectomy.

Periodic fever with aphthous stomatitis, pharyngitis, and adenitis (PFAPA) is an autoinflammatory disease manifested as recurrent febrile episodes associated with one of the following cardinal features: aphthous ulceration, pharyngitis, and cervical adenitis. It was initially described in children and thought to be a disease of pediatric age group. Few adult cases were also reported in the literature.

Oral Manifestations of Systemic Lupus Erythematosus Patients in Qatar: A Pilot Study.

Objective: The purpose of this pilot study was to assess the prevalence of oral manifestations among systemic lupus erythematosus (SLE) patients in Qatar, in order to warrant future studies that would investigate each one of these manifestations with detail and further scrutiny.

Methods: Study procedures took place between November 2014 and April 2016. All patients visiting the outpatient rheumatology clinics at Hamad General Hospital, Doha, Qatar, were asked to join.

Large Scale Metabolic Profiling identifies Novel Steroids linked to Rheumatoid Arthritis.

Recent metabolomics studies of Rheumatoid Arthritis (RA) reported few metabolites that were associated with the disease, either due to small cohort sizes or limited coverage of metabolic pathways. Our objective is to identify metabolites associated with RA and its cofounders using a new untargeted metabolomics platform. Moreover, to investigate the pathomechanism of RA by identifying correlations between RA-associated metabolites.

An assessment of the current treatment landscape for rheumatology patients in Qatar: Recognising unmet needs and moving towards solutions.

Objective This study assessed the mode of application (oral, intravenous or subcutaneous (SC)) currently employed in the treatment of rheumatoid arthritis (RA) in patients from Qatar in comparison with patients' individual preferences for the mode of application of their treatment. Methods This study included 294 RA patients visiting three clinics at the main referral hospital in Qatar who were interviewed using a standard questionnaire to determine their preference of mode of application for their disease-modifying antirheumatic drug (DMARD) treatment in relation to their currently employed mode of application. Results The majority of patients were female (76%), and 93% of male patients and 61% of female patients in the study clinics were of a nationality other than Qatari.

A Multinational Arab Genome-Wide Association Study Identifies New Genetic Associations for Rheumatoid Arthritis.

Objective: Genetic factors underlying susceptibility to rheumatoid arthritis (RA) in Arab populations are largely unknown. This genome-wide association study (GWAS) was undertaken to explore the generalizability of previously reported RA loci to Arab subjects and to discover new Arab-specific genetic loci.

Methods: The Genetics of Rheumatoid Arthritis in Some Arab States Study was designed to examine the genetics and clinical features of RA patients from Jordan, the Kingdom of Saudi Arabia, Lebanon, Qatar, and the United Arab Emirates.

The prevalence and clinical characteristics of nonradiographic axial spondyloarthritis among patients with inflammatory back pain in rheumatology practices: a multinational, multicenter study.

Background: Patients with ankylosing spondylitis (AS), who by definition have radiographic sacroiliitis, typically experience symptoms for a decade or more before being diagnosed. Yet, even patients without radiographic sacroiliitis (i.e.

An assessment of patients' knowledge of osteoporosis in Qatar: A pilot study.

Osteoporosis is a disease that affects the bones. It leads to increased risk of fractures as a result of decreased bone mineral density. The goal of this study was to assess the general perception of osteoporosis as well as knowledge of lifestyle, risk factors, and preventive measures among patients in Qatar.

Challenges of diagnosis and management of axial spondyloarthritis in North Africa and the Middle East: An expert consensus.

Axial spondyloarthritis (SpA) is a spectrum of inflammatory disease with stages characterized by both nonradiographic and radiographic sacroiliitis. Nonradiographic axial SpA is associated with health-related quality-of-life impairment and may progress to ankylosing spondylitis. Axial SpA has a low prevalence in some countries in North Africa and the Middle East, and pooling of data and resources is needed to increase understanding of the regional picture.

Clinical Assessment and Management of Spondyloarthritides in the Middle East: A Multinational Investigation.

Data on spondyloarthritis (SpA) from the Middle East are sparse and the management of these diseases in this area of the world faces a number of challenges, including the relevant resources to enable early diagnosis and referral and sufficient funds to aid the most appropriate treatment strategy. The objective was to report on the characteristics, disease burden, and treatment of SpA in the Middle East region and to highlight where management strategies could be improved, with the overall aim of achieving better patient outcomes. This multicenter, observational, cross-sectional study collected demographic, clinical, laboratory, and treatment data on 169 consecutive SpA patients at four centers (Egypt, Kuwait, Qatar, and Saudi Arabia).

Safety, Tolerability, and Efficacy of Tocilizumab in Rheumatoid Arthritis: An Open-Label Phase 4 Study in Patients from the Middle East.

This open-label study investigated the safety and efficacy of tocilizumab in Middle Eastern patients with rheumatoid arthritis (RA). Patients whose Disease Activity Score based on 28 joints (DAS28) was >3.2 received tocilizumab 8 mg/kg intravenously every 4 weeks for 24 weeks.

Sustained remission with etanercept tapering in early rheumatoid arthritis.

Background: We assessed the effects of reduction and withdrawal of treatment in patients with rheumatoid arthritis who had a remission while receiving etanercept-plus-methotrexate therapy.

Methods: Patients with early active disease who had not previously received methotrexate or biologic therapy received 50 mg of etanercept plus methotrexate weekly for 52 weeks (open-label phase). We then randomly assigned patients who had qualifying responses at weeks 39 and 52 to receive 25 mg of etanercept plus methotrexate (combination-therapy group), methotrexate alone, or placebo for 39 weeks (double-blind phase).

Characteristics of patients with rheumatoid arthritis in Qatar: a cross-sectional study.

Objective: To describe the clinical characteristics, serologic, radiological and clinical disease activity, and modality of therapy in patients with rheumatoid arthritis (RA) at tertiary outpatient care in Qatar.

Methods: The study design was cross-sectional where 100 consecutive cases who met 1987 American College of Rheumatology criteria for diagnosis of RA were enrolled in this study. Demographic data (sex, nationality and age) numbers of swollen and tender joints, X-rays and current medications were collected during outpatients visits to Hamad General Hospital.

Associations between inflammation, nocturnal back pain and fatigue in ankylosing spondylitis and improvements with etanercept therapy.

Objectives: To investigate the relationships between inflammation, nocturnal back pain and fatigue in ankylosing spondylitis (AS) and the impact of 12 weeks' etanercept treatment versus sulfasalazine or placebo.

Methods: Data were combined from four clinical trials for patients with AS who received at least one dose of etanercept, sulfasalazine or placebo and had at least one postbaseline assessment value. Linear regression was performed (controlling for site, protocol and demographics), to explore the relationship between inflammation (C-reactive protein [CRP]), nocturnal back pain (visual analog scale [VAS] 0-100 mm) and fatigue (VAS 0-100 mm Bath AS Disease Activity Index fatigue item).

Vitamin D study in pregnant women and their babies.

Background And Objectives: Vitamin D deficiency is very common in pregnant women. Deficiencies have been prevalent even in studies where over 90% of the women took prenatal vitamins. The current guidelines for vitamin D intake during pregnancy of 200-400 IU has little scientific support and has been recently challenged.

Safety of tumor necrosis factor inhibitors use for rheumatoid arthritis and ankylosing spondylitis in Africa, the Middle East, and Asia: focus on severe infections and tuberculosis.

Multiple studies of patients in Western countries with rheumatoid arthritis (RA) and ankylosing spondylitis (AS) have indicated increased risk for active tuberculosis (TB) and other infections among these individuals. It has also been consistently reported that patients receiving tumor necrosis factor (TNF) inhibitors for these conditions have higher rates of active TB and other infections than RA or AS patients not receiving these medications. These issues have been studied less extensively in the Asia and Africa-Middle East regions, and information from these regions is important because of higher rates of TB in the general population.