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Background: Identification of rheumatoid arthritis (RA) in primary care is challenging and often delayed. Anti-cyclic citrullinated peptide (anti-CCP) antibody testing of people presenting to primary care with new-onset musculoskeletal symptoms without synovitis could help address this; those testing positive are at increased risk of developing RA.

Aim: To explore how primary care clinicians currently identify and refer patients with suspected RA, and the behaviours required to implement a prediction model for guiding targeted anti-CCP testing for non-specific musculoskeletal symptoms in primary care.

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Objective: To analyze the diagnostic value of a combined test of anti-cyclic citrullinated peptide antibody (CCP), anti-keratin antibody (AKA), anti-carbamylated protein antibody (Carp antibody), and rheumatoid factor (RF) in the early diagnosis of rheumatoid arthritis (RA).

Methods: Sixty cases of RA admitted to our hospital from 2021 to 2022 (observation group) were selected, along with 50 cases of healthy physical examiners (control group). The results of CCP antibody, AKA antibody, Carp antibody, and rheumatoid factor in both groups were analyzed: the concentration of CCP antibody, AKA antibody, Carp antibody, and rheumatoid factor in each group at different levels; the comparison of various testing methods with the "gold standard" test; and the ROC curve analysis of CCP antibody, AKA antibody, Carp antibody, and rheumatoid factor in each group.

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A portable optical detection system for rapid quantification of two rheumatoid arthritis biomarkers.

Anal Chim Acta

January 2025

Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan; Institute of NanoEngineering and Microsystems, National Tsing Hua University, Hsinchu, Taiwan. Electronic address:

Background: Rheumatoid arthritis (RA) is a chronic autoimmune disease that causes joint damage and progressive destruction of adjacent cartilage and bones. Quick and accurate detection of rheumatoid factors (RF) and anti-cyclic citrullinated peptide antibodies (anti-CCP) in serum is effective in diagnosing RA and preventing its progression. However, current methods for detecting these two biomarkers are costly, time-consuming, labor-intensive, and require specialized equipment.

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Unmet Needs and Current Challenges of Rheumatoid Arthritis: Difficult-to-Treat Rheumatoid Arthritis and Late-Onset Rheumatoid Arthritis.

J Clin Med

December 2024

Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.

Despite remarkable advances in the management of RA, there are still unmet needs that rheumatologists need to address. In this review, we focused on difficult-to-treat RA (D2T RA) and late-onset RA (LORA), and summarized their characteristics and management. The prevalence of D2T RA is reported to be 6-28% and many factors have been identified as risk factors for D2T RA, including female sex, long disease duration, seropositivity for rheumatoid factor and anti-cyclic citrullinated peptide antibody and their high titer, baseline high disease activity, and comorbidities.

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Background: Case reports suggest that calcitonin gene-related peptide monoclonal antibodies (CGRP mAbs) may trigger inflammatory flares in patients with autoimmune diseases.

Case Description: A 56-year-old woman with a history of severe migraines, experienced improvement in migraine frequency and intensity after starting fremanezumab 225 mg monthly. However, three months into treatment, she developed symmetric inflammatory polyarthralgias.

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